2006 May 21 - Build 2036 cvs and 2037 test
-------- Eric Auer (eric@coli.uni-sb.de)

WARNING: This changelog entry is a draft! The cvs log contains
  data for both HEAD and UNSTABLE branch while a cvs checkout
  seems to return only the HEAD branch. This file history.txt
  should describe "2036 cvs" HEAD and "2037 test" UNSTABLE
  separately rather than in one merged changelog item.

In addition, the "Changes Eric" items yet have to be ported to
  the UNSTABLE branch and the version.h for UNSTABLE should say
  "03 Mar 2006" "2037 test" (revision 37)...!

Most recent changes to source code (see version.h) are:
  HEAD 9 Sep 2005 (not counting the Korean stub and execrh change and
    VERSION= fix by Eric, and not counting the version change itself)
  UNSTABLE 3 Mar 2006 (includes SYS changes, more Win3 support,
    COM port output for debug print, the SHARE tool...)
    The head to unstable diff in general is quite large. As a rule
    of thumb, use UNSTABLE if you need NLSFUNC or Win3 386 mode or if
    you need a very new kernel, and use HEAD if you need stability.

+ Changes Jeremy
	* build.bat, config.b: UPX and WIN3 build options, for BUILDALL
	* boot/oemboot.asm: set backup boot sector on FAT32, add update
	  option, fix oemboot to work with msdos 7+, in UNSTABLE branch.
	* docs/bugs.txt: update Bugzilla URL
	* docs/config.txt: document SWITCHES, based on suggestions from Eric
	* docs/contrib.txt, docs/fdkernel.lsm: new email address
	* docs/sys.htm, docs/sys.txt: see oemboot.asm
	* docs/sys.txt: better check for valid backup boot sector # and add
	  option to skip setting it
	* hdr/debug.h, kernel/prf.c: slight cleanup, send debug prints to COM
	  port, allow printf to work correctly when SS!=DS, debug changes
	* hdr/device.h: add comments about what flags mean
	* hdr/portab.h: from dev: add MK_PTR and MK_SEG_PTR macros
	  add/use halt() wrapper for issuing "hlt" asm instruction
	* hdr/version.h: update version to 2035b-cvs (= not a release yet)
	* kernel/config.c: fix read calls to detect error, from Eric / Brad
	* kernel/console.asm, newstuff.c, prf.c, task.c: compile time option
	  to send debug output to COM port ("serial debugging console")
	* kernel/dosfns.c: do not compares filenames to name field in block
	  devices, extra win3 support, misc debug output changes, IsDevice
	  should not compare filenames against block device driver headers
	* kernel/dsk.c: works towards better SS!=DS support, centralized
	  debug macros, some comments
	* kernel/entry.asm: more win3 support, debug output changes, comments
	* kernel/execrh.asm: protect 386 registers, using hdr/stacks.inc
	  macros (Watcom: FS, GS Others: high 16 bits of EAX EDX, for MSCL8
	  also ECX, for BC5 also EBX), for ALL device driver calls. Without
	  this, some versions of free-EMM386 crash 386 optimized kernels.
	  See list archives 24 Jul 2005 and later.
	* kernel/fatfs.c: don't leave fd open when failing DIR bit check
	  bug 1874 fix, do not consider setting DIR bit an error for
	  int 21/4301=set attribute, if really is a directory
	  Added some disabled debug messages, improved win3 support.
	* kernel/init-mod.h: allow printf to work correctly when SS!=DS
	* kernel/initdisk.h: insure bpb_huge is initialized (zeroed) [merge
	  from dev kernel], fake floppy ddt so hd access works correctly on
	  floppyless systems, based on suggested fix from Eric
	* kernel/int2f.asm kernel.asm main.c: initial BIOS disk int 13h wrapper,
	  only passively detects and notes floppy disk change, more win3 support
	* kernel/inthndlr.c: potential fix for spurious near fnodes!=0 msg with
	  shsufdrv and >2 near fnodes in use for bug 1879, use halt() wrapper,
	  more win3 support, some debug output changes.
	* kernel/intwrap.asm: assembly glue to wrap misc interrupts with C
	  handler, cleaner push immediate from Arkady and note big bug to be
	  fixed, later moved to UNSTABLE branch (also affects makefile)
	* kernel/proto.h: fix prototype, add FAR
	  allow printf to work correctly when SS!=DS
	* mkfiles/generic.mak: undo a local only change, build list option
	  is proper way to do this. more win3 support, upx build option.
	* mkfiles/watcom.mak: allow printf to work correctly when SS!=DS
	* share/MAKEFILE, share/share.c, share/share.hlp: FreeDOS SHARE
	  (initial revision, later moved to UNSTABLE branch)
	* sys/fdkrncfg.c: sync printf prototypes (uncorrupt executables)
	* sys/sys.c: sync printf prototypes (uncorrupt executables)
	  better check for valid backup boot sector # and add option to skip
	  setting it. set backup boot sector on FAT32, add update option,
	  fix oemboot to work with msdos 7+
+ Changes Eric
	* kernel/globals.h changed the os_release version message to be
          "build 2036 cvs [version Sep 09 2005 compiled May 20 2006]" as
	  opposed to the old
	  "version 1.1.35 (Build 2035b-cvs) [Jul 23 2005 12:34:56]"
	  -> removed the "1.1.35" and compile TIME, added SOURCE DATE
	* hdr/version.h removed some no longer used version defines
	  Changed build to "2036 cvs" (revision 36)
	  WARNING: Version should be "2037 test" (revision 37) for UNSTABLE!
        * docs/history.txt: summarized log -d '>Feb 25 2005' kernel for this
	  WARNING: some of the described changes might be available only
	  in the UNSTABLE cvs branch (like SYS OEMBOOT, Win3, COM port
	  output for debug print, the SHARE tool, ...)
	* kernel/execrh.asm: removed the "protect 386 registers" patch
	  again, a fixed version of free-EMM386 is available. This reduces
	  device driver call overhead in terms of CPU and stack usage.
	  Older EMM386 versions destroyed eax ebx ecx edi esi ebp fs gs,
	  now go_driver_entry in emm386.asm saves those registers. Only the
	  INIT was broken, but the execrh.asm patch protected ALL functions.
	* share/share.c: changes to reduce TSR memory footprint
	* kernel/inthndlr.c: added stub for function 0x6301/0x6302 Korean
	  Hangul keyboard input methods (0x63xx is DBCS support related)
	* kernel/config.c: VERSION= must set the int 21.30 DOS version,
	  not the int 21.3306 "internal" DOS version. Fixed.
	* docs/intfns.txt: updated list of supported DOS functions. When
	  DOSLFN is loaded for int 21.71, only remaining unsupported int
	  21 functions are 21.4b05 (set execution state), int 21.63xx
	  (DBCS / Korean Hangul, see above) and int 21.5d01 - 21.5d05
	  (close files by name/computer/task, list open files, commit all)
	* made linebreaks in all batch files use CR LF, as Unix line breaks
	  confuse command.com, leading to "early abort" or "endless loop"
+ Changes Lucho
	* kernel/chario.c: Fix Ctrl-Z bug and retro-optimise a bit
	* kernel/config.c, sys/sys.c: Fix BC 3.1 CONFIG.C compile and
	  SYS Abnormal Program Termination error for BC
	* sys/sys.c: fix update option (compared too many characters)
+ Changes Eduardo
	* kernel/config.c: fix Spanish (34, not duplicate of 33)
	* kernel/inthndlr.c: add int 2f subfunc 122B and 122D
+ Changes Jason
	* kernel/fatfs.c: extended DPBs and Set Extended Error function
	* kernel/inthndlr.c, kernel/proto.h: same
+ Changes Arkady
	* kernel/inthndlr.c: use direct access instead of reading from copy
	  made on stack
	* kernel/intwrap.asm, kernel/kernel.asm: cleaner push immediate from
	  Arkady and note big bug to be fixed
+ Changes Michael
	* share/share.c: bugfixes
+ Changes Japheth
	* share/share.c: HXDOS related improvements
+ Changes Bart
	* kernel/main.c: patch to make device=f:\foo.sys work. String printf
	  optimisation


2005 Feb 25 - Build 2035a
-------- Jeremy Davis (jeremyd@computer.org)
+ Changes Bart
        * int2f.asm: call_nls: DI register was not preserved (bug 1812)
+ Changes Arkady
	* floppy.asm: fix epilog for FL_SETMEDIATYPE & FL_SETDISKTYPE
	  to use 'ret' instead of 'ret 8'; improve comments
	* entry.asm: use unsigned comparision instead of signed
+ Changes Lucho
	* dsk.c: text in play_dj
	* fatfs.c:
          - zero creation/access stamp on directory entry write as MS-DOS 7.10
          - prevent removal or renaming of the current directory of that drive
	* ioctl.c:
	  - r_si/r_di contents added as documented in PC-DOS Technical Update
	* inthndlr.c
	  - fix: for INT21/5F07 and 5F08, before changing bit CDSPHYSDRV,
	    MS-DOS checks if physical device associated with drive letter. Without
	    this check MS-FORMAT under FreeDOS was destroys RAMDISK.
	  - zero serial number of Int 21h/30h (else buggy 32RTM thrashed stack) [& Bart]
	  - set AX = ES after Int 21h/4Ah (undocumented but expected by BRUN45)
	    (the last 2 changes needed to fix bugs discovered by Michael Devore)
	  - added Int 2Fh/2Fh processing to set DOS version as per MS-DOS 4.0
+ Changes Eduardo
	* inthndlr.c: added Int 2Fh/26-29h processing for NLSFUNC (with Lucho)

2004 May 30 - Build 2035
-------- Bart Oldeman (bart@dosemu.org)
+ Changes Lucho + Tom
	* config.c, fatfs.c, globals.h, init-mod.h: From Tom: must
	  set r_bpfat for C_BLDBPB, otherwise USBASPI.SYS, DI1000DD.SYS
	  won't like us. From Lucho: use DiskTransferBuffer for deblock_buf.
+ Changes Lucho
	* docs/fdkernel.lsm, stacks.inc, version.h,
	  entry.asm, inthndlr.c, io.asm, nlssupt.asm: no need to preserve
	  high part of ecx for Borland, ebx for MSVC
	* device.h, dsk.c, init-mod.h, ioctl.c:  MSC fixes and small cleanup
	* ioctl.c: Cache attr and control flow optimizations (~120 bytes)
	* device.h, dsk.c, ioctl.c: deal with the correct
	  structure for generic and query ioctls. Fixes issues with
	  3rd party device drivers (or ones that use dsk.c)
	* dosfns.c, inthndlr.c, proto.h: Merge dosmkdir and dosrmdir
	* config.c: strcasecmp and set_strategy common code optimizations.
	* main.c: Add necessary cast for BC
	* portab.h: Avoid problem with BC declaring __emit__, en/disable twice.
	* dsk.c: DJ mechanism without memcpy.
	* newstuff.c: replace loops by fmemset/fmemcpy (43 bytes)
	* dosfns.c, fatdir.c, fcbfns.c, ioctl.c: Some small cleanups.
	* config.c: GetNumArg and misc other cleanups
	* time.h, fatfs.c: converted TM_ENCODE into a function.
	* inthndlr.c, proto.h, fatfs.c: Inlined dos_setdta.
	  Various bug fixes and cleanups from Lucho and Arkady.
	* inithma.c: moved fmemcmp's into a checkHMA function.
	* inithma.c: HMAFree == 0xfff0 - bytesToAllocate
	  is valid and may happen if the buffers occupy exactly all HMA
	  space up to and including the last byte at ffff:ffff. Failing
	  caused all buffers to go low ...
	* inthndlr.c: cleanups (merge common code into long_check and
	  short_check). Made int21/3301,2e,54 consistent with MSDOS
	  behaviour.
	* globals.h, task.c, main.c: Convert setvec into a function
	  for the resident code
+ Changes Arkady
	* initdisk.c: initdisk optimizations (65 bytes) and is_suspect fix.
	* config.c, init-mod.h, intr.asm: optimized allocmem()
	* fattab.c, kernel.asm: optimizations
	* main.c: Make signon one big printf function call.
	* ioctl.c: bugfix for INT21/440b (change NetRetry if DX is _non_zero).
	* inthndlr.c: cntry == 0 doesn't make sense for Set Country
	  Information. Fix int21/5e02+
	* sys/talloc.c: Turbo C really wants unsigned __brklvl. Only shows
	  up if you enable stack checking.
+ Changes Bart
	* memmgr.c, proto.h, inthndlr.c: DosUmbLink no longer
	  tries to merge free blocks. Also cleaned up a bit.
	* inthndlr.c: Fix int21/3302 (the swap was wrong, Lucho & Bart)
	* config.c: Pointer-ise specificCountriesSupported accesses.
	* config.c: Reorganized GetBiosKey a bit -- inlining
	  GetBiosTime saves a slight amount of code, converted timeout < 0
	  to a blocking read instead of polling.
	* config.c: Use strcaseequal instead of strcasecmp since we
	  never care about order anyway.
	* chario.c: Fix problem with redirected input and
	  int21/ah=0a (debug < foo.txt) -- could get you an invalid opcode!
	* console.asm, main.c, prf.c: Use int29 for kernel console
	  output. Enables ansi escape sequences in config.sys once you load
	  nansi.sys. It also saves a couple of bytes.
	* newstuff.c, proto.h: made dosmktmp to return a long:
	  consistent with DosOpen et al and avoids the cast.
	* mkfiles/tc2.mak: Let TC2 warn for the utilities.
	* config.c: Disabled EBDA moves by default. Automatic EBDA
	  moves now happen using switches=/e:-1
	* config.c: Pointer-ize MenuStruct[MenuSelected]... (from
	  Lucho). and InstallCommands[i].  (from Bart). Some other small
	  optimizations.
	* memmgr.c: Some small optimizations (46 bytes) and dead
	  code removal from Lucho and Bart
	* init-mod.h: Need to define strchr to init_strchr otherwise
	  the wrong one may be called.
	* initdisk.c: Do a bit of printf merging.
	* filelist, drivers/makefile, init-mod.h, inthndlr.c,
	  task.c, globals.h, main.c: Convert getvec into a C function.
	* int2f.asm: Clean up int2f assembly a bit (merge some
	  common bits, clarify label names)
	* fatfs.c, fattab.c: fattab.c now remembers if the old FAT
	  entry was free or not, so the free space adjustment could be
	  moved back to fattab.c.
	* init-mod.h: Replaced setvec macro by a function.
	* entry.asm, inthndlr.c: Made int21/ah=25,35 reentrant.
	  Solves problem with Intel PRO/1000 driver.
	* portab.h, globals.h, main.c: Initialise all int
	  vectors except the ones at 70:xxxx using a table.  Convert setvec
	  into a function that disables/enables ints (init code only for
	  now, resident code will follow later); cli/sti (disable/enable)
	  are now macros (inlined).
	* fnode.h, fatdir.c, fatfs.c: dir_read() no longer updates the
	  diroff counter. This eliminates the NEW field,
	  simplifies remove_lfn_entries(), and avoids a bug if you delete
	  the first entry in the root directory on FAT32.
	* fattab.c: Stop abusing "idx". The OW optimizer likes this better,too.
	* fattab.c: Clean up FAT12 handling -- there's a portable
	  approach that's small too.
	* fattab.c: Inlined much of getFATblock() into link_fat.
	  Saves the idx reference.  The second call (for a FAT12 entry that
	  is divided in two sectors) can be much simpler, no need to
	  recalculate. Merged next_cluster and link_fat into one
	  function depending on a special Cluster2 value.
	* fattab.c: Calculate the nibble/word/dword index of the FAT
	  entry in the sector centrally in getFATblock.
	* fattab.c: "clussec" can be of CLUSTER size if we divide by
	  an adjusted "words per sector"(FAT16), or "dwords per
	  sector"(FAT32) value instead of multiplying it first. For FAT12
	  the *3/2 works out a little differently: here we first multiply
	  by 3 and then divide by the number of "nibbles per sector".
	* main.c: Config.cfgInitTail is a pointer now so sizeof
	  isn't good. Just using strcpy helps F5 and F8.
	* main.c: "copyright" is near now so we have to use %s and not %S
	* blockio.c, dosfns.c, int2f.asm, network.c, proto.h, task.c:
	  reduced the number of network redirector functions in
	  int2f.asm. The remote_ functions (with one far pointer
	  argument) are now called with the help of a
	  network_redirector() wrapper in C by one multiplex function
	  using a generic void *arg argument to pass the third
	  parameter which can be various things.
	  Split int2f.asm functions, don't let them preserve as many
	  registers, use pascal calling convention for the "open"
	  (but really: multiplex) function.
	* dsk.c: floppy determination type optimization for format --
	  based on Arkady's suggestions a long time ago.
	  + a few other small optimizations (~70 bytes total).

2004 Apr 17 - Build 2034
-------- Bart Oldeman (bart@dosemu.org)
    * break.c, chario.c, inthndlr.c, proto.h: Improve ctrl-c/ctrl-break
      handling:
      - read_char_sft_dev handles ^C at a fairly high level.
      - ^C didn't work for int21/ah=3f. Corrected
      - Do_DosIdle_loop still needs to wait even if it doesn't call the
        idle int
      - ^C needs to be echoed to STDOUT for low character functions
        (ah<0xd) but to the device that is read from for handle
	functions. So we need to pass either the STDOUT sft or that
        device on to the ^C echoer which now correctly prints ^C\r\n.
      - misc cleanups in break.c.
    * main.c: Move memset up a little else it would overwrite too much.
    * build.txt, config.c, init-mod.h, initdisk.c, inithma.c, main.c: Lucho
      reported that MSC compiled kernels now work after all. Let's mark
      those nasty "BSS" variables explicitly then to try to avoid
      future problems. Also DATASTART should be FAR and not DOSFAR for MSC
    * stacks.inc, generic.mak, entry.asm, int2f.asm, kernel.asm, segs.inc:
      (suggested by Arkady): use CPU to enforce 8086 etc instructions.
    * ioctl.c: Correct int21/ax=4401: returned AL = old value, should
      set CY and DE_INVLDDATA if DH!=0 (RBIL is a little confusing here).
    * memmgr.c: Converted nxtMCBsize back to a macro. There is no need
      to use far2para; FP_SEG works fine since MCBs always have offset 0.
    * build.txt, config.c, config.h, kernel.asm, main.c, segs.inc, task.c:
      Removed obsolete BYTE cfgCSYS_fnam[NAMEMAX]; config variable. Changed
      cfgInit and cfgInitTail to pointers, adjusted some code to cooperate.
    * chario.c: The screen position (for TABs) is only for raw
      *CONOUT* devices already updated in dosfns.c
    * memmgr.c, proto.h: Make unnecessary far pointers near.
    * device.h, dsk.c, initdisk.c: Move the ddt bitfields to
      df_descflags. Let SetLogDev call GetLogdev, eliminating common code.
    * init-mod.h, mscl8.mak: Some vars need to be DOSFAR;
      init code is no longer tiny but small.
    * segs.inc, inithma.c, main.c, asmsupt.asm, execrh.asm, init-mod.h,
      kernel.asm, watcom.mak:
      Make CS the same for INIT and HMA text for Watcom. Move HMA text
      up in kernel.asm. Use std for the memory move: helps if there's
      overlap (PCs with a very low amount of RAM).
      No longer include duplicate execrh, asmsupt, and u8m/d functions
      for the init text in the Watcom compiled kernel, since they can
      be called "near" in the resident code.
    * portab.h, kernel.asm, main.c, segs.inc:
      Use the "small" model for the init code (split code/data).
    * main.c: Use pointer to MK_FP(0,0x5e0) to save a bit of code.
    * initdisk.c: Move some common code into a "push_ddt" function.
    * sys.c: Correct int25/26 pragmas. Need to explicitly preserve bp
      and pop flags.
    * initdisk.c: fmemcpy->memcpy where possible
    * config.c, init-mod.h, inithma.c, int2f.asm: Make
      UMB_get_largest "pascal". Let it use the xms driver address from
      the HMA code. Misc small config.c cleanups.
    * initdisk.c: "Cache" far drive data table near. Enables elimination
      of many far pointers in initdisk.c. Also clear up the
      unnecessary casts in ConvPartTableEntryToIntern.
    * drivers/getvec.asm, drivers/rdpcclk.asm, drivers/wratclk.asm,
      drivers/wrpcclk.asm, globals.h: Use pascal calling
      conventions for all clock related asm functions.
    * drivers/floppy.asm, dsk.c: Use pascal calling conventions
      for floppy asm functions.
    * init-mod.h, intr.asm, proto.h, kernel.asm: Use the
      pascal calling convention for all intr.asm functions, and let
      them pop the stack (smaller code than using bx). Tell Watcom
      which registers are clobbered; save some more registers for
      intr() -- especially for intr() this helps.
    * device.h, execrh.asm, init-mod.h: Use pascal calling conventions
      for execrh().
    * mkfiles/watcom.mak: Use the "-r" switch for Watcom to preserve ES
      around calls -- saves ~350 bytes.
    * sys.c, init-mod.h, fdkrncfg.c, portab.h, prf.c, proto.h:
      Introduce VA_CDECL: only Turbo C 2.01 needs an explicit cdecl
      for printf, all other compilers can use it with pascal or
      "register" calling conventions.  Saves ~50 bytes for the init code.
    * asmsupt.asm, config.c, init-mod.h: Use strchr and strlen
      more often; also use strchr in the init code.
    * memmgr.c: Better to call fmemset than to do things manually.
    * asmsupt.asm, proto.h, init-mod.h: Be more specific about
      which registers are clobbered by asmsupt.asm functions. Preserve
      "ES" for Watcom.  Saves ~150 bytes resident, ~90 bytes
      nonresident, more for 386 kernels.
      Preserve bx and cx for WATCOMC as well. Saves another 200 bytes.
    * inthndlr.c: Simplify memory access mode check.
    * dsk.c: Remove wrong "512" value for number of root directory
      entries on FAT32 partitions.
    * file.h, sft.h, dosfns.c, fcbfns.c: Get rid of SFT_M* mode
      values. O_* values are sufficient.
    * file.h, fatfs.c: Define O_ACCMODE and use it instead of "3" for
      the open access mask.
    * config.c, init-mod.h: Change default STACKS= size to 256.
    * config.c, init-mod.h, main.c: Remove lpOldTop variable.
      It is no longer necessary (has not been for some time) and the
      assignment in config_init_buffers() was wrong (screwed up fnodes,
      so that buffers overlapped fnodes...).
    * lol.h, config.c, fatfs.c, globals.h, kernel.asm, proto.h:
      Made the main fnodes far so they can be in the HMA.
      Internally the kernel uses two near fnodes though, to save on
      codesize and fmemcpy's if necessary. Having memory management on
      two fnodes is a little silly but I just want to make sure with
      the panic message that we never accidentally try to use three near
      fnodes at the same time (two are used at the same time by rename,
      commit, and merge_file_changes).  This can be cleaned up later.
    * fatfs.c:
      - Merge three almost identical pieces of code used to allocate a new
        directory entry in creat, rename, and mkdir into alloc_find_free.
      - Merge find_fat_free() and extend() -- they were almost
        identical. Have a simplified clause for f_cluster ==
        FREE. Set f_cluster = FREE in shrink_file if the file is set to
        0 bytes; in that case we should set the current cluster to FREE
        even if it is currently a LONG_LAST_CLUSTER.
    * fnode.h, fatdir.c, fatfs.c, lfnapi.c:
      - Eliminate f_back field. extend() now uses f_cluster instead of
        f_back, while map_cluster makes sure it's not set to
        LONG_LAST_CLUSTER (but to the cluster before it) when calling
        extend(). extend() and first_fat() now return the new cluster
        number or LONG_LAST_CLUSTER, just like find_fat_free().
      - Eliminated f_sector and f_boff fields from fnodes.
      - Avoid bitfields for fnodes, using flags instead. Replaced droot
        field by checks for f_dirstart == 0.
      - Make f_diroff an entry offset so it can be 16bits. Enforce the
        65536 entry limit in dir_read(), except for root directories.
	For root directories it's checked against a different limit
	later. Saves 80 bytes or so + 2	bytes in every f_node.
    * dsk.c, fatfs.c, memmgr.c: Remove add_far. adjust_far can do the job.
    * chario.c: Echo input LF as CR-LF unless it's the first
      character. Never store LF in the buffer.
    * memmgr.c, task.c: Eliminated long2para and avoided use of "long"s
      in DosExeLoader, using paragraphs to measure size instead. Saves
      ~130 bytes together.
    * prf.c, asmsupt.asm: Saved ~75 bytes in printf and by elimination of
      fstrlen. There's only one call; inlining doesn't increase the size.
    * dosfns.c, int2f.asm, intr.asm, nls.c: Eliminate intr()
      from resident code. Saves ~200 bytes of HMA resident code.  Also
      made the nls.c functions SS!=DS safe.
    * init-mod.h, inthndlr.c, intr.asm, main.c, proto.h, task.c:
      int21/ah=26: new_psp now copies the old psp and just sets a few
      fields int21/ah=55: child_psp does the rest init code does the
      init (fixed values are always copied now)
    * dosfns.c: Commit each close, even if the ref count is > 0.
    * prf.c: Borland C didn't like one pseudo register use.
    * initdisk.c: Merge "suspect partition" copy/paste code into functions.
    * asmsupt.asm: Save a couple bytes by moving the strncmp_retzero block.
    * fcbfns.c, proto.h: Don't call truename from FcbNameInit(). It
      was only necessary for "FcbRename", which can call it itself.
      Fixes for FcbOpen/FcbFindFirstNext a consequence of
      truename's funny behaviour: truename(c:nul) = c:/nul and
      truename(c:/nul) = c:\nul. Fixes the EJECT problem from Lucho.
      Remove unused variable lpFcb.
    * portab.h, dsk.c, main.c, newstuff.c: Define I386 and I186 more
      cleanly.  Add (UWORD) casts to silence the compiler. Optimize
      (head*sector) to secs_per_cyl. Add BORLANDC to compiler list
      and simplify startup printf to one message.
      #pragma enable_message(130) for Watcom C causes it to
      behave a little more like Borland in terms of warnings.
    * exeflat.c, fatfs.c, fattab.c, fcbfns.c, inthndlr.c,
      memmgr.c, task.c, blockio.c, fatdir.c: Added explicit
      (UWORD) type casts to avoid compiler warnings and sometimes save
      a few bytes too. Also changed the FcbParseFname return value:
      returns offset portion of pointer (SI) instead of the number of
      bytes to be added to SI.
+ Changes Lucho
    * task.c: fixes the CHKDSK I: "Invalid drive specification" bug
    * mcb.h, inthndlr.c: save 33 bytes by eliminating a switch for
      memory/UMB access modes.
    * talloc.c: talloc won't work with MSC (no sbrk or brk available)
      + fix
    * stacks.inc: smaller Protect/Restore 386 register macros.
    * inthndlr.c: Code size reduction and dead code removal.
    * dosnames.c: Remove wrong automatic "*.*" code from Lixing
      Yuan -- return DE_PATHNOTFND or D_NFILES instead
    * ioctl.c: move the lock/unlock simulation of success before the
      device GENIOCTL check so that it applies to any device.
    * filelist, dosnames.h, dosfns.c, dosnames.c, fatdir.c, fatfs.c,
      globals.h, init-mod.h: (with Bart) -- remove the dosnames path
      67 length check. Review the places where it really matters (chdir
      and mkdir).
    * init-mod.h, intr.asm, kernel.asm, main.c, procsupt.asm,
      proto.h, task.c: enable interactive re-execution of the SHELL.
    * nls.h, config.h, globals.h, init-mod.h: move NLS #defines to
      nls.h. Move config structure to config.h. Some cosmetic changes.
    * contrib.txt: From Lucho: update contributors list.
    * config.c: From Lucho: fix EBDA problems with INSTALL. This
      fixes the weird fmemcpy lockup; in reality kernel init code was
      overwritten.
    * asmsupt.asm, config.c, init-mod.h, inithma.c, main.c, makefile,
      prf.c: Use asmsupt string and mem functions for the init code too.
+ Changes Arkady
    * task.c: A few suggestions. Saves 5 bytes.
    * inthndlr.c: Use AL, not AX, for int2f/ax=1213, as per RBIL
    * inthndlr.c: Use xreg struct and macros to optimize the
      int2f/12,4a handler a bit ~25 bytes
    * config.c: Buffer config fixes.
    * inthndlr.c, proto.h: Corrections to int2f/ax=4a01/2.
    * blockio.c: buffer intersection check should use > instead
      of >=. small optimization -- the segment in bp == firstbuf is
      always the same so we just need to compare offsets.
      AllocateHMASpace needs to check FP_SEG(firstbuf) for 0xffff,
      since the buffers may not live in the HMA.
    * *.bat, config.b, kernel/makefile, generic.mak: .BAT file and
      makefile cleanups. Also Lucho reported that nmake/nologo doesn't
      always work in 4dos, but nmake /nologo works.

2004 Jan 31 - Build 2033
-------- Bart Oldeman (bart@dosemu.org)
+ Changes Bart
    * config.c: allow "0" in full-screen config menus and plug a
      few potential related overflows.
    * sys.c: correct sectors/track, head and hidden sector values
      if the boot sector disagrees with the default bpb (unless the
      default bpb says that the number of hidden sectors is zero (usual
      for floppies)).
    * config.c, main.c: Only put PATH= in the environment if
      it's still empty just before executing the shell. This repairs
      SET PATH=.... in config.sys without confusing anyone.
    * fatdir.c, fatfs.c: Fixed bug #1722: dir_close() was
      called for normal files (via map_cluster and find_fat_free). This
      completely messed up rwblock. Removed these calls (for
      directories they are already covered at a higher level) and added
      a few sanity checks to dir_close and dir_write.
    * chario.c, inthndlr.c: Expand tabs for int21/ah=2,9 even
      in raw device modes and if stdout is redirected. This solves bug
      1737 (grep2msg problem)
    * ioctl.c: Adapted from Chris Rodie's patch for bugzilla
      #1730: do a device input status request for int21/ax=4406 for
      devices (not for files). Save ~100 bytes by replacing
      s->sft_flags with flags, s->sft_dev->dh_attr with attr and
      simplifying the if() statement a bit
    * hdr/sft.h, dosfns.c: Adapted from Chris Rodie's patch
      (bugzilla #1729): "open" and "close" should call the open/close
      functions for devices using a device request when appropriate.
    * hdr/fat.h, fatdir.c, fatfs.c, fattab.c, prf.c, proto.h:
      + FAT32 kernels should ignore the upper word of the cluster
        number for FAT16 partitions (just like FAT16 kernels do)
      + added extra checks to make sure that invalid FAT entries are
        never followed
      +	print a message in case of FAT corruption
      + some small optimizations and header cleanups (some suggested by
        Arkady)
    * config.c: Make strupr code unambiguous
    * filelist, sys/makefile, sys/sys.c, sys/talloc.c: ~1K size
      reduction for sys.com by using Tom's talloc.c malloc/free
      functions and using our own filelength for watcomc.
    * initdisk.c: Better (for FAT32) and simpler FAT default
      value calculations.  Also use 16-bit instead of 32-bit quantities
      where possible to save code size. Use a FAT32 table so that FATs
      won't be too big for drives <= 64 GB
    * dosfns.c: Do not clobber the DTA if findfirst or findnext fails.
      Fixes bug #1712
    * fatfs.c: Rename blockio by rqblockio (namespace conflict with dsk.c)
    * inthndlr.c: FAT32 kernels should fail int21/ah=71 with
      al=0, carry set.
    * hdr/portab.h, nls.c: (as reported by Tom) Fix nls upcase problem
      with SS!=DS.
    * fatfs.c: Move permission check to better place (only for
      necessary for opening existing files), not for creating them --
      suggested by Steffen. Force r/o open for FCB and legacy creat
      if the file is read-only
    * fatfs.c: Move common code in media_check() to a new
      blockio() function.
    * fcbfns.c, globals.h, inthndlr.c: Change FcbReadWrite to
      handle multiple records at once; this allows for the optimization
      of FcbRandomBlockIO.
    * fcbfns.c: Divide optimisation (ceiling) + some small cleanups
    * fcbfns.c, globals.h, kernel.asm: Rename the global lpFcb
      variable to sda_lpFcb. Then use local lpFcb variables where
      necessary. This clears up the confusing shadowing.
    * fcbfns.c, inthndlr.c, proto.h: Fix FCB problems with
      int21/ah=27,28 (RandomBlockIO)
    * boot32.asm: jmp -> jmp short (necessary for nasm 0.98)
    * dosfns.c, inthndlr.c, proto.h: Implement support for
      int2f/ax=1220.  Fix int2f/ax=1216 (needs sft handles, not psp
      handles, and to return the relative handle in BX, and to deal
      with carry)
    * boot.asm: Fix problem with FAT12
+ Changes Eric Luttmann <ecl@users.sourceforge.net>:
    * main.c: Fix for multisegmented device drivers: If there are multiple
      device drivers in a single driver file, only the END ADDRESS
      returned by the last INIT call should be the used.  It is
      recommended that all the device drivers in the file return the
      same address.  This fixes a load problem with DUSE.
    * config.c, init-mod.h, main.c: fix for multi-segment device
      drivers; preserve rq_endaddr between init calls for the same driver.
+ Changes Lucho:
    * inthndlr.c: Remove AL=0 check for AH=6c (from Arkady) Optimize DL check.
    * main.c, serial.asm: (with some help from Tom):
      initialize serial ports and retry serial reads on timeout.
    * sys.c, boot.asm, boot32.asm, boot32lb.asm:
      SYS 3.0 changes: added /L parameter to SYS to be able to change
      the kernel boot segment + a few boot sector changes to get the
      pointer at the same magic place for all boot sectors.
    * makefile: clean up *.lnk files for "clean" and "clobber".
    * dsk.c: the DJ mechanism needs to affect MEM 0050h:0004h - MS-DOS
      LOGICAL DRIVE FOR SINGLE-FLOPPY SYSTEM (A: / B:) Size:BYTE
    * int2f.asm, generic.mak: basic implementation of INT 2F/ax=4a33 -
      CHECK MS-DOS VERSION 7; necessary for SpinRite (Steve Gibson)
    * inthndlr.c: implement int2f/ax=1211 NORMALIZE ASCIZ FILENAME
    * config.c, init-mod.h, main.c: Added SET support to config.sys

2003 Sep 24 - Build 2032a
-------- Bart Oldeman (bart@dosemu.org)
+ Changes Bart
    * fix segment problems with ctrl-c and character uppercase
      handlers
    * fix critical error callers to set the critical error code
      immediately before calling the handler (in case they call
      DOS-59); don't set the critical error in inthndlr.c if
      something else already did. Return with an errorcode if
      "truename" and "read"/"write" encountered a critical error.
    * sys.c: add /k kernname.sys option to and straighten out SYS option
      processing; remove the metakern magic.
    * config.c: ignore the segment part for multi-part device drivers

2003 Sep 21 - Build 2032
-------- Bart Oldeman (bart@dosemu.org)
+ Changes Rune Espeseth <re@icd.no> (modified by Bart)
    * config.txt, config.c: Full screen config.sys menus (use MENUCOLOR=)
+ Changes Michal Bakowski (mb@orad.pl)
    * initdisk.c, kernel.asm: Change the boot drive to always
      be C: if DLASortByDriveNo==1
+ Changes Arkady
    * dsk.c: Use memcpy instead of fmemcpy; avoid downcasting
      from far to near.
    * sysclk.c: err if sizeof(struct ClockRecord) != rp->r_count
      move year init below reading the BIOS
    * main.c: init_device corrections/cleanups
    * device.h: Change r_status and dh_name to unsigned quantities.
    * task.c: Free memory if there is an error in the relocation
      table.
    * floppy.asm, getvec.asm, rdatclk.asm, rdpcclk.asm, wrpcclk.asm:
      driver .asm files optimizations (also from Bart); remove
      obsolete rdatclk.
    * build.txt: Fix some typos.
    * inthndlr.c: Add missing (); small optimization for DosGetdate/time.
+ Changes Lucho
    * boot.asm, boot32.asm, boot32lb.asm, sys.c: add metakern support:
      sys looks for a file metakern.sys which is a multiple of 512.
    * break.c: Fix ctrl-break bug.
    * ioctl.c: IOCTL 4406 provided reverse AL output on regular
      files - FF if EOF, 0 if not. It should output 0 if EOF, FF if not.
    * initclk.c: Initclk changes
    * config.c, init-mod.h, initoem.c: Support for
      switches=/e[[:]nnnn] and for moving the EBDA
    * fatfs.c: Use 0x10000UL (avoids Turbo C warning)
    * sys.c: Move manually added "RCS" entries to the CVS log.
    * main.c: Adjustments for MSVC.
    * ioctl.c: int21/ax=440d lock/unlock logical/physical volume
      simulate success for MS-DOS 7+ SCANDISK etc. --LG
    * main.c: && should be || in check for \, / and :
    * task.c: Adjust registers used when starting programs. Some
      demos expect undocumented values (with Bart).
    * mscl8.mak: Forgotten HMA_TEXT for MS compilers.
    * sys.c: Add lock/unlock drive to SYS
    * history.txt: Changelog correction.
    * fatfs.c: Use near bpb on the stack in bpb_to_dpb.  Make
      sure the number of FAT sectors is actually enough to hold that
      many clusters. Otherwise back the number of clusters down
    * procsupt.asm, proto.h, task.c: Don't disable a20 for
      "exit" int21/ah=4c
+ Changes Lucho, Tom, Eric
    * boot.asm, boot32.asm, boot32lb.asm, makefiles, sys.c:
      * boot.asm modified to support non-512 byte sectors
        (e.g. 1.2 MB NEC diskettes)
      * 512 byte sector size check removed (although Eric's boot32ea.asm
        does require 512-byte sectors, all LBA FAT32 volumes have
        512-byte sectors anyway).
      * boot.asm cleaned up and modified to support Metakern
        bsDriveNumber updated by SYS even #ifndef STORE_BOOT_INFO
      * (nothing in common)
      *  SYS Now supports and includes the following new boot sectors:
        1) the combined CHS+LBA FAT12/FAT16 boot sector by Tom Ehlert(29 July)
        2) the CHS-only FAT32 boot sector -- as patched by Jon Gentle(08 July)
        3) the LBA-only FAT32 boot sector by Eric Auer and Jon Gentle (19 July)
      * The old combined (CHS+LBA), no-CALCPARAMS, no-resizable, non-Ghostable,
        non-standard FAT32 boot sector and STORE_BOOT_INFO is no longer used.
      * dump_sector() showed ASCII debug printout for the old sector
        only - fixed.
      * Put a boot sector only if sector size= 512 (may it not be so in
        Japan?!). If non-512 byte sectors encountered, report to the
        fd-kernel mailing list.
      * Now puts boot sector before copying kernel/shell so it works in
        WinNT now.
      * check_space() now implemented at last (required significant
        modifications)
      * New (FAT type) detection method according to a MS White Paper.
      * Now BOOTONLY works even without preceding boot sector image file name.
      * Some minor code cleanups.
      * Bart: some cleanups to the above; replaced 386 code for CHS FAT32
        by 8088 code. Use boot32lb.asm instead of boot32ea.asm
+ Changes Bart
    * portab.h, process.h, init-mod.h, inithma.c, kernel.asm, main.c, task.c:
      * add support for the far jmp at "int 30" (0000:00c0)
      * mirror it for the HMA (ffff:00d0)
      * put all DOS int handler (and the CPM entry jumped to from
        int30) jumpers in the "CONST" portion of DGROUP (instead of
	LGROUP)	This helps Turbo C++ 1.01 make with the -S (swap)
	switch.
      * adjustments to set the relevant PSP fields in task.c
    * blockio.c: Always use huge block sectors if the relevant bit is
      set in the device header. This solves a problem with xmsdsk.
    * chario.c: Small optimizations
    * clobber.bat: Remove duplicate clobber.
    * Flip some slashes for Linux compat and simplifications in makefiles
    * device.h, portab.h: Use STATIC=static for watcom C (statics
      are in the mapfile); remove some cruft.
    * makefile, wlinker.bat: More verbose mapfiles for watcom
      C; some slash preparations to allow cross-building on Linux
    * exeflat.c, patchobj.c: Fix warnings reported by Turbo C
    * break.c, chario.c, dosfns.c, globals.h, inthndlr.c,
      proto.h, systime.c: (with a little help from Arkady)
      Simplifications and cleanups.
      Pass a near pointer to the far pointer that points to the device
      instead of an SFT index (in general).
      Make cooked_write much faster by only testing for input every 32
      characters.  No longer test for ctl_s on syscon if writing to
      the printer: just read from the printer which will return zero
      characters.  Fix reading/writing zero characters by returning
      "256" (special code). Adjust interfaces in other files.
    * portab.h: New UNREFERENCED_PARAMETER macro that appears to
      work for all compilers.
    * floppy.asm: Remove unused code.
    * init-mod.h: Solve compilation problem with Borland C++ 3.1
    * config.b: "-p" is no longer necessary in config.bat
    * kernel.asm: Add necessary "BootHardDiskSeconds" for non
      UPXed kernels.
    * chario.c, dosfns.c: Add necessary casts to ? : constructions;
      cleanup read_line_handle a little.
    * portab.h: Add peek and poke #defines
    * chario.c: Fix pointer overflow problem for reading line using handle.
    * makefiles, exeflat.c Clean cleans a bit more; change () to (void)
    * main.c: Set the PSP before the DTA. This solves an interrupt
      vector table corruption.
    * kernel.asm: Use "local" (instead of "global") disable/enable
      A20. This solves the problems with NIOS.
    * asmsupt.asm, misc.c, proto.h, strings.c: Remove (unused) strncpy.

2003 Jul 19 - Build 2031
-------- Bart Oldeman (bart@dosemu.org)
+ Changes Luchezar Georgiev
    * (with Bart) add extra low disk buffer to avoid HMA
      problems with certain device drivers.
    * Add an extra space character at the end of the command line
      for device drivers to prevent wrong behavior at empty command line.
    * point to a correct environment for INSTALL=
      (fixes problems with xmsdsk).
    * change device driver error code check (using S_ERROR | S_DONE)
      (fixes problem with the SystemSoft PCMCIA socket services driver)
    * correct parameter order in inthndlr.c, chario.c
    * INSTALLHIGH correction.
+ Changes Tom
    * Fix a problem with the 'BootFromHarddiskIfNoKeyHit' option.
      that occurred with some Compaq and Fujitsu/Siemens highend equipment.
+ Changes Bernd Blaauw
    * config.txt updates
+ Changes Steffen Kaiser
    * NLS adjustments
+ Changes Bart
    * Correct problem with multiple UMBs (bug #1671)
    * main.c: there aren't lastdrive open file handles but a
      maximum of 20.
    * Make "unable to disable A20" message #ifdef DEBUG only.
    * config.c,main.c: Small size optimizations (some proposed by
      Arkady Belousov)
    * asmsupt.asm: Removed unnecessary jcxz's (Arkady)
    * intr.asm: intr() cleanup and small optimizations (Arkady)
    * Use PASCAL calling convention by default for Turbo compilers.
    * Move more externs to header files
    * SFT init cleanup (+3 files need to be low)
    * config.c, main.c: Fix bug in block device driver init of
      DPBs (bug #1969, TDSK problem)

2003 Jun 18 - Build 2030
-------- Bart Oldeman (bart@dosemu.org)
+ Changes Tom
    * if user left accidentally floppy or CD in drive,
      give him a chance to continue to boot from HD.
      disabled by default, enablable by SYS CONFIG
      (BOOTHARDDISKSECONDS)
+ Changes Lixing Yuan
    * dosnames.c cleanup, fix for truename if the filename
      contains wildcards and a trailing dot.
+ Changes Eric Auer
    * add sanity check to initdisk.c for (driveParam->chs.Sector == 0)
      + some display tweaks
    * add EECHO (echo with $=ESC) support to the config.sys parser.
    * distinguish between the builtin DOS version and the settable
      DOS version.
    * console.asm now accepts extended scancodes (modified by Bart, fixes
      bug #1657)
    * added BOOTONLY option to SYS (modified by Bart)
+ Changes David Bolen
    * add support for UNC-style paths (that start with "\\")
+ Changes Luchezar Georgiev
    * add Bulgarian country structure data
+ Changes Bart
    * flip some slashes in drivers/*.asm
      (enables cross-assembly on Linux)
    * remove superfluous printf("\n") in patchobj.c
    * combine the INIT class with the CODE class (classes can span
      multiple physical segments)
    * re-add _TEXT to LGROUP to be able to simplify the patchobj magic
    * don't specify -zPI_GROUP for the init code in Borland compilers
      (unnecessary, it will be put there because of segs.inc)
    * remove STDPATCH; it is no longer necessary
    * add FILESHIGH, LASTDRIVEHIGH, and STACKSHIGH and DOSDATA=UMB
      to load these structures into UMBs
    * make DOS sub-MCBs visible (seen by MEM)
    * preliminary allocation of FILES etc. now takes place at the
      top of conventional memory, and device drivers are loaded before
      the final allocation takes place.
    * handle multiple UMBs more correctly (but config.sys can use
      only one UMB for devicehigh -- /Ln,xxxx is not yet implemented)
    * minor size optimizations in newstuff.c, chario.c, dosfns.c and fcbfns.c.
      asmsupt.asm: correct fmemchr (all n's) and *memset/*memcpy
      (n==0)
    * introduce lol structure for list of lists; avoid lots of
      relocations
    * avoid more relocations in the asm files by loading ds from
      [cs:_DGROUP_]
    * Fix problem with attributes with the volume label bit + findnext
    * SYS: avoid copying kernel.sys and command.com if the destination
      is identical to the source (fixes bug #1656).
    * Fix bug in DeleteBlockInBufferCache: needs to make the block
      invalid, not flush it, if we're writing (bug #1635).
    * added switches=/k/n/f support to the config.sys parser.

2003 Mar 14 - Build 2029
-------- Bart Oldeman (bart@dosemu.org)
+ Changes Tom
    * fattab.c, fat.h removed the wrong ELSE_ISFAT32()
    * fatfs.c: rmdir would crash if you rmdir'ed an existing file
    * config.c, main.c, portab.h
      implement INSTALL and INSTALLHIGH for config.sys
      basic COUNTRY=xxx support (with a little help from others,
      mentioned in config.c)
    * execrh.asm: save si, di for strategy device driver handler
    * (adjusted by Bart): the internal "truename" has to reject
      wildcards for all commands except for the exposed "truename"
      (DosTrueName, int21/ah=60), FindFirst and FCB functions.
+ Changes Bart
    * add top level makefile with list of files to zip for releases
    * remove obsolete documentation and intr.h
    * eliminated the "f_highwater" fnode field.
    * reintroduced HMA_TEXT segment and adjust segments in libm.lib
      to solve problems with Borland compilers.

2002 Dec 9 - Build 2028
-------- Bart Oldeman (bart@dosemu.org)
+ Changes Tom
    * move clock driver initialization to inittext
    * new ELSE_ISFAT16 macro to save some bytes
    * use _TEXT for old HMA_TEXT, _LOWTEXT for old _TEXT to get
      a slightly less complicated memory model from the C compiler's
      point of view.
    * add support for int2f/4a01,4a02: query/allocate HMA space.
    * updated config.txt
+ Changes Arkady V. Belousov
    * slightly improved asm for print_hex and int2f clear_ax stuff
    * use #error for unknown compilers
    * remove hexDigits reference
    * correct comment in kernel.asm (pad to 05fdh)
+ Changes Bart
    * fix ss:sp init bug for int21/ax=4b01 (visible in DEBUG)
    * fix redirection problem for character output routines
    * fix press the any key message for floppy swaps
    * correct cluster value for BAD cluster
    * correct FAT12/16/32 cutoff magic values as per the MS spec
    * the BUFFERS structure is now the same as in MSDOS 5+ and uses
      a circular double-linked list using near pointers.
    * move all old RCS log messages into one seperate file
    * divide the fnode f_cluster_offset field by the size of a cluster:
      this gives a more efficient map_cluster().
    * point the CharMapSrvc pointer to the DOS DS for AARD compliance.
    * nls.c: set CX to cooperate with load_unf.exe

2002 Nov 9 - Build 2027
-------- Bart Oldeman (bart@dosemu.org)
+ Changes Tom
    * memset ErrorAlreadyPrinted to 0 in config.c
+ Changes Bart
    * reset drive before and after int26 in SYS for winnt compatibility
    * propagate sharing bits correctly in DosOpen
    * return DE_NFILES if a volume label is not found; search for volume
      label if attr & 8 not just if attr==8
    * initialize the critical error code to 0 in inthndlr.c
    * ignore value of DH for extended open int21/ah=6c
    * fix problem with NULL device code being in the wrong segment
    * Hopefully innocent hack to deal with NDN in ioctl.c (ignore upper bits
      of the drive number)
    * use subst bit 15 for int21/ax=4409(IOCTL-CHECK IF BLOCK DEVICE REMOTE).

2002 Oct 27 - Build 2027rc
-------- Bart Oldeman (bart@dosemu.org)
+ Changes Bart
    * reorganized chario.c, got F1-F6, Ins, Del, etc. working
    * fixed bug in extended open
    * fixed bug in memory manager (realloc should try to defragment;
      UMB fixes)
    * consistently pass sft_idx around for all SFT functions (instead of
      the far pointer)
    * lpUserStack is gone :)
    * Idle interrupt: now uses disk i/o stack instead of error stack if it
      re-enters DOS; can not be called from int21/ah=3f. It also checks
      InDos now (as documented in "undocumented dos").
    * int21/ah=59 should use the disk i/o stack, not the character stack.
    * get_cds: a uniform way to get the CDS for drive X which can do error
      checking too. get_dpb: similar.
    * task.c uses mid-level system file handles instead of PSP handles.
    * SFT sequence is MS/DR DOS like: 0=AUX 1=CON 2=PRN
    * int21/ah=4d needs to clear the return code after returning it.
    * Removed need for "unusedretval" because some functions return a long int
      now.
    * Do not warn for some additional LBA partition layouts (begin/end
      cylinder=1023) in initdisk.c.
    * support int2f/ax=1213 (uppercase character) (ASCII only for now).
    * fix for top of memory parameter to device driver - fixes problem
      with DRDOS emm386
    * eliminated printf for non-init code -- use put_unsigned and
      put_string instead
    * better MK_FP for Turbo C++ 1.01 and later
    * PSP related task.c cleanups
    * use --best and new upx (1.23) for binary build
    Changes Tom and Bart:
    * Use Pascal calling convention for memcpy and friends in asmsupt.asm
    * Fixed make temp file
    * fix bug in DosFindNext
    * misc makefile fixes

2002 Aug 3 - Build 2027test
-------- Bart Oldeman (bart@dosemu.org)
+ Changes Tom
    * enable LBA FAT16 booting
    * workaround for redirectors that do/do not set the opencount
    * int25/26 should fail for redirectors
    * set the number of sectors per track in the INT 1E table when
      reading/writing floppies
    * disabled fatal() in error.c
    * Disable the A20 line upon exec (int21/ah=4B). This is necessary for some
      brain-dead exepacked programs.
    * removed unnecessary "BUFFERS" fields
    * proper check for network/non-existing drive for int25/26.
    * save more bytes on the stack at various places
    * made the local registers for inthndlr.c "near" instead of "far".
    * fix bug in strchr handling for fcbfns.c (FcbParseFname)
+ Changes Steffen (but changed a lot by Bart)
    * new truename (Bart: but without mapPath() style struct)
    * merge open/create functions into one extended open function
    * also honor the sharing bits better for "open"
    * use local 8+3 path names in fatfs.c; merge name+extension
      into one array
    * take care of filenames that start with ASCII 5: they should be
      treated as starting with 0xe5
    * exploit the fact that the filenames are already "truenames",
      i.e., fully qualified in fatfs.c. This simplifies parsing a lot.
+ Changes Bart
    * make "if exist c:\dir\nul" working
    * honor "do not inherit handle on exec" flag for "open".
    * improve the FCB functions so that they set the critical error code
      properly
    * next_cluster returns "1" instead of DE_xxx in case of failure.
    * create one function to do binary character IO (used for CLOCK$
      driver and character drivers such as CON)
    * better handling of ABORT/FAIL
    * merge all read and write functions
    * patchobj makefile correction
    * printf uses va_list etc.
    * quicker and more robust Watcom build
    * use FS: and GS: for Watcom 386.
    * workaround: don't use DL for floppy boots, but fixed A:
    * disable unused functions in floppy.asm
    * cleaner prototypes (thanks to gcc)
    * reorganized ioctl.c; there was an uninitialized variable.
    * inlined some functions of fattab.c
    * added (f)strcmp, (f)memcmp and (f)memchr to asmsupt.asm
    * initially suggested by Arkady: dsk.c FS_info copy optimization
    * initialize a VDISK signature in the HMA
    * sysclk.c: small size optimization
    * small UMB fixes
    * made the CDS into a proper array instead of a structure with
      one member
    * large task.c cleanups -
      merge as much as possible from DosExeLoader and DosComLoader
      (from Tom:) eliminate some structures in low memory
    * main.c: slightly cleanup "SHELL=" line parsing.

2002 May 9 - Build 2026b
-------- Bart Oldeman (bart@dosemu.org)
+ Changes Tom
    * limit output at boot time somewhat
    * GetCurrentDirectory should fail, if drive is accessible
    * fixed some minor config.sys parser bugs and have the possibility
      of things like 123?device=EMM386.EXE NOEMS
    * shorter version of DosMemLargest()
+ Changes Bart
    * repaired makefile dependencies
    * implemented multi-sector writes, and re-merged
      readblock()/writeblock() into rwblock ()
    * implemented int21/ah=1c for network drives (RHIDE needs this)
    * initialize current_ldt for findnext (hinted by Steffen)
    * check serial number for floppy disk changes where the drive
      does not feature a changeline
    * reset to root directory when floppy has changed
    * cleaned up endian helpers {get,put}{byte,word,long}
    * don't close file if disk is full
    * enforce minimum of 9 sectors per track for INT1E (necessary for
      some floppies on some XTs)
    * clear carry when calling INT23 (ctrl-break handler) as per RBIL
    * don't copy FCBs on exec if they are pointed to by FFFF:FFFF.
    * resolved warnings for  Watcom (now compiles with -wx -we)
    * truename fix (return DE_FILENOTFND for foo.bar.foo)
+ Changes Jeremy
    * fixed SYS _dos_getdrive for non-Borland compilers
+ Changes Tom and Bart
    * cleaned up fatfs.c, fattab.c, sysclk.c (CLOCK$ driver), systime.c

2002 Feb 17 - Build 2026a
-------- Bart Oldeman (bart@dosemu.org)
+ Changes Martin
    * fixed SYS for non-Watcom compilers
+ Changes Tom
    * set CONFIG environment variable to selected number of CONFIG.SYS
      menu entry, for example for use in AUTOEXEC.BAT.
+ Changes Bart
    * fixed FCBOpen
    * network redirector fixes ; it appears that clearing CF before calling
       the redirector is safer than setting CF
    * allow creating, renaming and deleting volume labels using FCBs
    * fix renaming with wildcards using FCBs
    * some dosfns.c and fcbfns.c clean-ups
    * booting from hard disk now always sets the default drive to C:,
      not D: if booting from the second physical hard disk, etc (bug #1062).

2002 Feb 9 - Build 2026
-------- Bart Oldeman (bart@dosemu.org)
+ Changes Tom
    * fixed various typos, #includes
+ Changes Bart
    * fixed ECHO in config.sys
    * made passing parameters to command.com more robust:
      zero commandline before use, fixed buffer overflow for F5+F8
    * "uppermem_root" in the List of Lists is now FFFF if no UMBs
      available, as documented in RBIL
    * removed all direct hooks from init_text to hma_text; duplicated
      the remaining functions (memset, memcpy and friends).
    * bumped up default DOS version of FAT32 enabled kernel to 7.10

2002 Feb 3 - Build 2026test
-------- Bart Oldeman (bart@dosemu.org)
+ Changes Tom
    * FCB clean-ups and fixes (bug in FCB Random IO,
      CYRUS CHESS, bug #1014)
    * initial config.sys menus (see config.txt)
    * execrh.asm: construct 'interrupt' address after strategy to avoid
      some issues with non-trivial 'strategy' routines.
    * make kernel UPX-able
    * cleaned up midnight flag, dates
    * tmark() and friends are floppy specific and implemented in C
      instead of ASM (parts by Bart)
    * DMA boundary checking gives the right number of sectors if
      the start sector is 512-bytes-aligned.
+ Changes Victor
    * lfn fixes (lfn is only a place holder, does not work yet)
    * FAT32 fixes
    * dosemu log nicer
+ Changes Martin
    * log output
    * warning fixes for sys, patchobj and prf.c
+ Changes Bart
    * FCB clean-ups and fixes
    * make Watcom compiled kernel runnable
    * make compilation with Pascal style calling conventions
      for Borland compilers (-p) possible
    * initialize CDS before opening devices
    * implement lock/unlock for remote drives
    * implement commit file (int21/ah=68,6a)
    * implement ioctl get/set logical drive map (int21/ax=440E--F)
    * implement get address of drive data table (int2f/ax=0803)
    * fix "get address of SDA" (int21/ax=5d06)
    * do not use CHS if the root extended partition of the relevant
      logical partition is labelled LBA (bug #1011)
    * hopefully avoid format problem (bug #1030) by not setting drive
      to "non-accessible" while reading the bpb.
    * boot sector fixes:
      enable booting beyond cylinder x where x * number of heads >= 65536.
      still uses CHS to boot (not able to boot beyond cylinder 1023)
      recognize FF8-FFF as FAT12 ending (was only FFF) (bug #1021)
    * avoid using LIB when linking the kernel by echo-ing to a linker
      resource file. Use a batch file to bypass Borlands Make 2.0
      unwillingness to redirect stdout.
    * UMB variable clean-up
    * use of "const" for constant global variables
    * reduced size of Watcom-compiled SYS binary

2001 Nov 18 - Build 2025c
-------- Bart Oldeman (bart@dosemu.org)
+ Changes Bart
    * ran source code .c and .h files through "indent"
    * fixed new printf bug
    * removed some duplicate documents
+ Changes Victor & Bart
    * fixed sys.c fat32 detection bug (offset 0x10, not 0x2c)

2001 Nov 17 - Build 2025b
-------- Bart Oldeman (bart@dosemu.org)
+ Changes Tom
    * fix a few more batch file and makefile details
    * fix problems with command line editing: F1 and right key
    * string merging in dosnames.c
    * optimizations for MSC
+ Changes Bart
    * fix readblock problem not properly detecting EOF - it sometimes
      returned an error where it should just report a short count.
      Also fnp->f_offset==0 is not a special case for blockread
      (neither should it be for write - but that'll be for later)
      For both cases it's perfectly legal to do a seek first.
    * fix writeblock not setting highwater to offset when doing a
      truncate (count == 0)
    * hopefully now really fix the floppy change problem -
      dsk.c: getbpb() should query changeline BEFORE reading the BPB.
    * fixed warnings from WATCOM compiler - one of them was in fact
      a bug in fcbfns.c
    * started big clean-up
      - converted obsolete bcopy(), sncopy() and friends to memcpy(),
        strncpy() etc.
      - removed $Log entries that are also on the CVS server and
        removed the $ so no new entries will be added in files.
      indenting will be next - other fixes will be buried in diffs if
      I do that now.

2001 Nov 12 - Build 2025a
-------- Bart Oldeman (bart@dosemu.org)
+ Changes Tom
    * initialize LBA parameter struct to 0's - some BIOSes don't fill
      in everything. Thanks to Bernd Blaauw's bug report.
    * Minor boot sector optimization.
    * added some exeflat options
+ Changes Jeremy
    * changes to fdkrncfg.c: mostly cosmetic to the output
    * added sys.doc file (updated by Bart)
+ Changes Bart
    * let int 0 (divide by zero) and int 6 (invalid opcode) print a
      stack trace to aid in debugging
    * fixed floppy drive detection for XT's.
    * fixed bug in int21/ah=0x32 and friends - we should flush data before the
      forced media_check
    * Use CHS addressing if possible on partitions with the relevant ID,
      you can overide this using the new FORCELBA and GLOBALENABLELBASUPPORT
      sys config options.
    * Always use BIOS values for translating LBA to CHS for fixed disks -
      ignoring the boot sector values. For floppies the boot sector is used.
    * fixed "truename hello." to remove the trailing dot.
    * added options to SYS to write to a boot sector image file
    * set Critical Error Code for ioctl's
    * fake cluster size for 64k clusters just like FAT32 for INT21/AH=0x36
      and friends.
+ Changes Bart+Tom+Victor
    * make makefile system more robust
+ Changes Victor
    * cleaned up map_cluster and dir_read (bug fixed by Bart)
    * updated LFN API (in development, not used yet)

2001 Nov 4 - Build 2025a (test)
-------- Bart Oldeman (bart@dosemu.org)
+ Changes tom
    * config.sys processing: placing ? on the left side of '=' like
	 ?device=  or device ?=
	 asks for this single line
      fill the available HMA with buffers
    * added kernel configuration options to sys.com, small area at 60:xx
      (in cooperation with Jeremy)	
    * readblock optimized to read as many data as possible in one
      int13 request - great speedups for large reads
    * some more SDA variables need to be updated for the network
      redirector (the sft index)
    * reduce stack usage in task.c, fattab.c, ioctl.c, execrh.asm, inthndlr.c
    * protect high part of 32-bit registers (stacks.inc)
    * moved copyright messages to init data to save a bit of memory
    * added relocinf, patchobj, sorted + some more output of exeflat
    * UMB fixes
+ Fixes Bart, Victor, Tom
    * more FAT32 fixes - to work with device drivers
    * fixed overflow problem with more than 2048 directory entries
    * various space saving changes, dir_init_fnode
+ Changes Bart, Tom
    * many makefile changes to enable compilation with different
      compilers (MS, Watcom, Borland). Watcom compiles but the result
      does not run yet.
+ Changes Bart
    * extended the double-byte lead table from int21/ah=63 to 4 zeros
      to make Watcom happy
    * support for IOCTL AX=440D, CL=40,41,42,61,62 for
      read/write/format track - this enables R. Nordier format to work
    * default floppy type depends on the drive
    * rewrote many parts of int2f.asm to have a cleaner remote_xxx
      interface with less code and stack usage.
    * limit for int21/ah=36 is FFF6 total/free sectors
    * made the rtc clock reading code a bit more robust - assumes
      there is no rtc if the returned date is zero
    * removed non-necessary code in dosnames.c because we're always
      dealing with a TRUENAME there
    * added zero extending of files, but removed it (unless you force
      it) since MSDOS doesn't zero-extend files either
    * wrote a source for exeflat, removed all binaries from the source
    * added more INT2F/AH=12 functions to solve some MSCDEX issues
    * changed BAD sector handling : only ....FF7 is recognized as BAD,
      but FORMAT information from initdisk will only give ....FEF as
      the largest cluster (for safety), so ....FF0-....FF6 are not used
      for newly formatted disks (here .... is either nothing, F, or
      FFFF, FAT12/FAT16/FAT32).
    * more fatfs/fatdir clean-ups - now unnecessary fields dfull,
      dremote and dsize removed from fnodes.

2001 Sep 24 - Build 2025
-------- Bart Oldeman (bart@dosemu.org)
+ Fixes Victor
    * More FAT32 fixes
+ Fixes Tom
    * Printer handling
    * misc INT2F/AH=12 fixes.
    * misc clean-ups
+ Fixes Bart
    * Added drive B: handling if only one floppy drive available
      (look for play_dj() in dsk.c)
    * Simplify Victor's FAT32 fixes a bit
    * More printer clean-ups
    * fixed sys (thanks Jeremy)
    * DosChangeDir fails for path name too long.
+ Fixes Jeremy
    * Changed SYS so if no source given or only source drive (no path)
      given, then checks for kernel.sys & command.com in current
      path (of current drive or given drive) and if not there
      uses root (but only if source & destination drive are different).
      Fix printf to include count(ret) if copy can't write all requested bytes

2001 Sep 22 - Build 2025 (test)
-------- Bart Oldeman (bart@dosemu.org)
+ Added Victor
    * FAT32 support (credits to Martin Stromberg for boot32.asm optimizations)
    * Delete long file names if short file name given
+ Added Jeremy
    * modified SYS so it takes optional 2nd parameter (similar to PC DOS)
      where if only 1 argument is given, assume to be destination drive,
      but if two arguments given, 1st is source (drive and/or path)
      and second is destination drive
+ fixes Victor
    * some small FCB and dsk.c fixes
+ fixes Tom
    * some FAT32 issues
    * many compiler portability changes (compiles with Watcom, MSC, ...)
    * DosMemChange should set the PSP
    * converted INT2F/AH=12 functions to C and added some - enough to
      get most of the MS LAN network client working
+ fixes Bart
    * some FAT32 issues
    * Dos{Open,Creat}Sft drive letter issues
       for CDROMs (thanks Jeremy)
    * shrink_file should ALWAYS fail for directories, also with
      dos_set_fattr (thanks Jeremy)
    * only give warnings for slightly suspect partitions at boot
      time where CHS does not match LBA.
    * re-enabled copyright notice.
    * some dsk.c clean-ups to avoid DIR giving the same contents for
      a different floppy (get serial number/volume label did reset the
      changed state).
    * attribute should be 8-bit fix

2001 Aug 19 - Build 2024/h
-------- Bart Oldeman (bart@dosemu.org)
+ fixes Bart
    * truename fixes (#580)
    * free space fixes (#249)
    * Ctrl-C/Ctrl-Break fix

2001 Aug 19 - Build 2024/g
-------- Bart Oldeman (bart@dosemu.org)
+ fixes Bart
    * set file time fixes
    * clock fixes
    * findfirst/next fixes
    * added a bit more int2f/ax=12xx functionality
    * buffers trick to fool MFT so that it does not crash
    * Ctrl-S (pause) and Ctrl-P (printer echo) now work.
      Ctrl-Q is ignored by DOS.
    * FCB "closing twice is legal" fix. Necessary for visicalc.
+ fixes Bart + Tom
    * fixed shsucdx /u unloading problem	

2001 Jul 28 - Build 2024/f
-------- Bart Oldeman (bart@dosemu.org)
+ fixes Bart
    * fixed get current directory - MSCDEX works now (always)
    * initdisk.c correctly sets number of hidden sectors: necessary
      for FORMAT - SYS chain to work
+ updates Bart
    * initialisation memory situation changed: kernel is loaded
      to the top of conventional memory in the beginning. Then
      move it back low or high depending on DOS=HIGH and the presence
      of an XMS driver.
      DOS=HIGH without an XMS driver (such as FDXMS) has no effect anymore!
+ fixes Tom, Victor, Bart
    * various fatfs.c fixes and clean ups

2001 Jul 23 - Build 2024/e
-------- Bart Oldeman (bart@dosemu.org)
+ fixes Tom
    * dyninit allocation fix
    * various clean ups
+ fixes Bart
    * #define DBLBYTE in inhndlr.c. Necessary for PQDI
    * FCB corrections and cleanups (with a little help from Tom)
    * cleaned up (FCB)FindFirst/FindNext a little more.
    * task.c: copies default FCBs, initializes AX properly and
      an int21/ax=4b01 fix. Also closes all FCB opened files upon
      termination of a program.
    * dosnames.c: fixed DJGPP "ls c:/" problem reported by Martin
+ fixes Victor Vlasenko
    * Makefile fix for dealing with Borland make 3.6
    * fix for fatfs.c shrink_file()
+ fixes Bart
    * handle B: just like A: on a single floppy system. There still needs to be
      user interaction like "Please put a floppy in drive B:".
    * ioctl.c fix for INT21/AX=4400 + sft driveno field
    * various small fcb fixes
    * put file position number and pointers to Pri/SecPathName into
      SDA. Now MSCDEX works as redirector (but still not always :-()
    * redirector set attribute fixes + various cleanups
    * truename+attr+ioctl fix => DJGPP libc compiles cleanly!
+ changes Bart
    * use the output of truename() consistently: this saves a lot of
      headaches in parsing later and also allows a lot of simplifying:
      made many parameters in fatfs.c and fatdir.c NEAR
+ added Bart
    * partly implemented the "Drive Data Table" see RBIL INT2f/AX=0803
    * implemented construction of default BPB in initdisk.c
    * implemented the access flag in dsk.c
    * printf writes to DOSEMU log if prf.c compiled with #define DOSEMU
+ fixes Bart
    * dsk.c uses default BPB in the right places (with help from Tom and Brian)
    * Brian's FORMAT now works
    * Tab fix (bug reported by Martin Stromberg)
    * INT21/AH=0x1f now simply uses AH=0x32 for the default drive
+ fixes Tom
    * saved some static variables
    * implementation of int_2f_111e_call() for network/LAN manager
    * return AX=0001 for default redirector handler
    * enable use of multiple UMBs
    * fixed task.c 'LOADHIGH executables': minAlloc == maxAlloc = 0
      and an fixed overwriting the MCB

2001 Jul 9 - Build 2024/d
-------- Bart Oldeman (bart@dosemu.org)
+ fixes Bart:
    * fixed Ctrl-C (Ctrl-S and Ctrl-Q still missing).
    * ioctl EOF fix (DJGPP less&gdb problem reported by Martin Stromberg)
    * INT21/AH=29 (Parse Filename into FCB) fix (NC problem reported
      by Ken Martwick) with clean up from Tom.
    * ioctl should do a media_check before calling the block driver:
      this fixes bug #726 (first dir gave serial no. 1234-5678).
    * initdisk.c now uses the init data segment.
+ fixes Tom:
    * fixes for INT21/AH=32; this should cure the problems with
      Brian's new format.
    * more SYS fixes.
+ added Tom:
    * some more diagnostics (123) to aid finding bugs when booting from
      a hard disk.

from 2001 jun 23 : KE2024BP

+ fixes Tom:
    * FAT FS: would not expand files correctly, if lseek()
      beyond EOF (see also relnotes.txt)
    * FcbFindFirst/Next made compatible with MSDOS CHKDSK
    * saved even more bytes (now 24 buffers in HMA :-)

from KE2024BM
+ added Tom:
    * a mechanism, to regain near data (like miarray, bpbarray,...)
      this is somewhat braindamaging, moving the kernel up and down,
      working with different CS/DS combinations, but somehow working, :-)
      miarray allocated, using this mechanism.
    * made f_nodes near (2 K saving in HMA_TEXT)
      this technic might as well applied to CDs, DPB, sft's, ...
      this even saves a few bytes on stack :-)

from 2001 May 21: Build2024L
+ Fixes  Tom:
    * Clustersize 64K made working (one small ULONG was missing)
    * check for drive existence for INT25/26
    * NDEV = max number of possible harddisk partitions bumped
      from 8 to 20 (my testconfiguration has 13)

+ Added  tom:
    * LBA support for disks > 8GB (with the help from Brian
    Reifsnyder, see also relnotes.txt)
    * moved initialization for DISK (partition scanning) to INIT_CODE

2001 Jun 2 - Build 2024
-------- Bart Oldeman (bart@dosemu.org)
+ Fixes  Tom:
    * small fixes again.
    * one possible cause for data corruption (BFR_VALID) detected
    * directories with 'ARCHIVE' attribute could not be deleted
    * saved even more bytes (now 20 buffers in HMA :-)
    * some issues with pathnames around PARSE_MAX removed
    * blanks in filenames weren't proper handled
    * there was (at rare circumstances) a buffer overflow
      while config.sys parsing.
+ Fixes  Bart:
    * INT 21 0A - Dos Buffered Input reworked
    * init_PSPSet() fix for setting the PSP
+ Added  tom:
    * slighly better buffer handling (search BFR_UNCACHE)
      now go more FAT+DIR sectors, less DATA sectors into cache
    * dos_mkdir tuned (was ~0.5 sec on 64K cluster partitions)

2001 Apr 29 - Build 2024
-------- Bart Oldeman (bart@dosemu.org)
+ Fixes  Bart:
	 * fixed the "TYPE > FOO.TXT" poor man's editor.
	 * use "fast console output" (int 29) when applicable.
	 * moved 5 FILES to DOS DS:00CC and fixed the SFT linked list.
	 * cleaned up findfirst/findnext for redirected drives.
	 Tom:
	 * more VDISK changes (changed slightly by Bart)
	 * check for presence of A:/B: (changed by Bart to use the BIOS equipment flag
	    from INT11 instead of INT13).
	 * added F5/F8 stepping through config.sys; default SHELL=COMMAND.COM /P/E:256
	   Use ESC to stop single stepping, F5 to skip remaining config.sys/autoexec.bat.
	 * new sys: uses INT25/26 instead of the low level INT13 related kernel code from
	    floppy.asm (see also comments in sys.c) + a few fixes (also boot.asm related)
	    from Bart.
	 * Hopefully fixed DateTime Changed + ATTRIB |= ARCHIVE bug.
	 * cleaned up dsk.c and saved more bytes.
	 Przemyslaw Czerpak:
	 * Default lastdrive should be 5 (E) not 6 (F).
	 * fixed not ignoring whitespace after '=' in config.sys
	 * noted INT21/AX=3800 bug for getting the country. Put in a workaround for now.

2001 Apr 21 - Build 2024
-------- Bart Oldeman (bart@dosemu.org)
+ Fixes  Tom:
         * fixed a missing close_dir in fatfs.c.
         * many reductions of stack space requirements.
         we hope this fixes some FAT corruption problems.
         Bart:
         * fixed "copy con" and INT21/AH=0B. The SFT_FEOF flag,
           strangely enough, if true indicates NOT end-of-file.
         * VDISK signature required in HMA (bug 701 dborca@usa.net).
         Alan Kamrowski
         * fixed intr: it wasn't putting the flags back correctly
           and swapped si and bp.
+ Update Bart:
         * Changed initialization data segment to its code segment.
           This frees up a few more kb.
         * This required some header reorganisation:
           init-mod.h is for the init modules, globals.h for all the
           others.
         * Eliminated the master environment, as it is normally
           managed by command.com, not by the kernel. This saves 512
           bytes and command.com now copies a default environment from
           0068:0000; this is in the DOS_PSP at 60:0.
         * Moved low memory code segment to 70:0.
+ Add    Tom:
         * Default interrupt 6 handler (invalid opcode).

2001 Apr 16 - Build 2024
-------- Bart Oldeman (bart@dosemu.org)
+ Fixes  * Use turboc.cfg to avoid long command lines; edit ALLCFLAGS
           in config.mak to enable DEBUG etc.
         * Fixed critical error handler.
         * Fixed loading .exe's in UMBs if not enough space available.
         * Some device drivers require \r\n at the end of their
           parameter line.

2001 Apr 16 - Build 2023
-------- Bart Oldeman (bart@dosemu.org)
+ Fixes  * Thanks to Martin Stromberg for pointing some bugs out:
         * more warnings fixed.
	 * accidentally opened too many file handles at boot time.
	 * device drivers should not be linked into the device chain
	   if they do not take up memory.
+ Add	 * added printf "%S" and "%Fs" to print far strings.
         * enabled and cleaned up INT21/AH=6C (extended open/create).

2001 Apr 15 - Build 2023
-------- Bart Oldeman (bart@dosemu.org)
+ Fixes  Tom:
         * apisupt.asm not necessary anymore.
         * fix warnings.
         * Don't allow directories to be created in DOS_CREAT.
         * LoadDevice: drivers should not hang the computer if they fail.
         Bart:
         * fixed SYS.
         * made most calls near again, with a jump/stack trick to
           switch between INIT_TEXT and HMA_TEXT.
         * INIT_TEXT now calls INT21 itself for some things (setting
           PSP, opening/reading/closing devices and (fd)config.sys).
         * fixed some carry handling in inthndlr.c and
         * drives are checked before trying to access them.
         * fixed console driver "busy state" confusion: the built-in
           driver had it wrong, nansi.sys had it right:
           "If no characters in buffer, return BUSY".
         * space savings (RTL related and various other places)
         * redirector fixes for find_next.
         * CREAT on a device file failed (FD said it already existed).
           But for some reason it should not fail in DOS.
         * get ATTRIB/other things on a device file should return
           FILENOTFOUND, not PATHNOTFOUND.
           The sft_status field is not used for redirected drives.
         * DosSelectDrv checks the media before setting the default
           drive.
         * Fixed INT21/AH=3,4,5 (character R/W AUX/PRN).
         Hans Lermen:
         * critical error handler destroyed AH (entry.asm).
         Martin Stromberg
         * find_first for volume labels fix.
         * check drive at more places and avoid drive "@:" for drive "':".
         * config.m: comment out NASM= by default.
         * printf fix with DEBUG on.
+ Add    Tom: Introduce init_data segment.
              New temp file creation implementation.
         Bart: added INT21/AH=53. XMSDSK works fine now.
               dynamic allocation of Drive Parameter Blocks (they are
               all FAR now).
+ Update Bart: moved DOS_PSP to segment 0x60 as segment 0x50 is already used by
	       GWBASIC/BASICA

2001 Apr  2 - Build 2023
-------- Bart Oldeman (bart@dosemu.org)
+ Fixes  Bart: Volkov Commander revealed a few bugs:
	  -int 21/ah=55 forgot to set current psp to child psp.
  	  -memory allocation: mem_access_mode was a signed byte, and hence 0x80 was
  	   translated to 0xff80 and not 0x0080 when converting to a COUNT. Hence
  	   changed it to become a UBYTE.
  	  -An error in memmgr.c: search again in low mem for modes 0x80,81,82, not
  	   0x40,0x41,0x42
	 * execrh.asm & int2f.asm: made code executable on a 8088 (no push
	   constant)
	 * entry.asm: made sure dos_crit_sect is executed when required to.
	 * Another redirector fix. int 2f/1122 needed DS=current psp. This caused a
           bug for me: after compiling FreeCOM on a redirected drive "dir" did not
  	   work any more.
	 * The nansi.sys problem: as it was, the initialisation phase of nansi
  	   called int/ah=30, which checked control-break, which checks the console
  	   driver, which at that point is the still not initialized nansi. This
  	   messed up the request header passed to it. A solution I found is to link
  	   a device into the device chain _after_ initialisation, not before.
	 * Redirector fix: network.c uses fmemcpy instead of fsncopy.
	 * Fixed INT 21/AH=6 (direct console input).
         Tom:
         * DE_NFILES instead of DE_FILENOTFOUND to allow Volkov Commander to browse empty
           drives.
         * Fixed bug wrt zero terminated device names (should be spaces terminated).

2001 Mar 30 - Build 2023
-------- Bart Oldeman (bart@dosemu.org)
+ Fixes  Tom: Kernel alloc initialises to 0. This avoids some weird errors.
              Implemented default divide by 0 handler (INT 0)
              FILES= fixes from config.sys. fatfs.c ignored it and always
              used the default of 16.
              Misc debug code removal.
              int 21/ax=3306 report running HIGH fix.
              int 21/ah=69 : save CX
              InitializeAllBPBs() or MakeNortonDiskEditorHappy()
              More extended information if MCB chain corruption occurs.
         Bart: getdpb fixes (int 21/ah=32).
               fix carry handling in int 21/ah=5e.
               fix {get,set}_machine_name in network.c
	       saner lastdrive handling
+ Add    Support for SHELLHIGH in config.sys

2001 Mar 28 - Build 2023
--------
+ Fixes  Bug fix release 2023b: dsk.c (reported by Nagy Daniel), inthndlr and
	 int25/26 fixes by Tom Ehlert.

2001 Mar 27 - Build 2023
-------- Bart Oldeman (bart@dosemu.org)
+ Fixes  Bug fix release 2023a: fixed stack segment bug in entry.asm.

2001 Mar 25 - Build 2023
-------- Bart Oldeman (bart@dosemu.org)
+ Fixes  sys.com compilation: it is a proper .com and works again.
	 Suggestions from Martin Stromberg: warning removal and some
	 debugging related changes.
	 Suggestion from Aitor Santamaria Merino: implemented NUMLOCK=ON/OFF
         in config.sys. Also implemented strcasecmp.
	 Updated intfns.txt; reported version is now 5.0.

2001 Mar 24 - Build 2022
-------- Bart Oldeman (bart@dosemu.org)
+ Fixes  Tom and Bart: cli/sti handling and other fixes in entry.asm,
         procsupt.asm and apisupt.asm.
         Bart: warning removal + other compile time fixes.
         Tom: * more partition detection fixes in dsk.c.
              * dos_gettime() fix.

2001 Mar 21 - Build 2022
-------- Bart Oldeman (bart@dosemu.org)
+ Clean  A lot of space savings by Tom Ehlert, merely because Turbo C 2.01 does not
         do it. And several more complicated situations as well, like coding some
	 string functions in assembly (asmsupt.asm).
+ Add    Tom Ehlert: support for DOS=HIGH. Now most of the kernel can be loaded into
         the HMA. This required a lot of segmentation changes. Let's hope the best
	 of it. Support for device drivers with multiple devices.
+ Fixes  From Tom Ehlert:
         task.c bug fix (image_size is in bytes)
	 dosfns.c change dir to E:\FREEDOS\*.PRJ fix
	 fcbfns.c fixes.
	 break.c Ctrl-C Ctrl-C -> crash temporary fix.
+ Fixes  From Bart:
	 Let UMBs work again after HMA changes.
	 Be able to compile sys.com again. Is now really a .exe file but still masks
	 as .com in the hope that we can make it a real .com again.
	 DeviceHigh loads low if there are not enough UMB's available.
	 Fixed another redirector problem.
+ Update Optimized asmsupt.asm a bit with help of the glibc 2.2 source.	
+ Fixes  Tom Ehlert and Brian Reifsnyder: fix partition detection in dsk.c +
         other bug fixes (also: floppy.asm).
+ Update Tom Ehlert optimized blockio.c.
+ Fixes  a few small ones from Tom I forgot.

2001 Mar 08 - Build 2022
-------- Bart Oldeman (bart@dosemu.org)
+ Fixes  MCB chain corruption fix (thanks Tom Ehlert and Martin Stromberg)
         Redirector fixes (CDROMs and DOSEmu lredir'ed drives appear to work fine now)
         UMB fixes
         Various recodings (dsk.c, prf.c, portab.h) to make kernel
          object footprint 3k smaller (Tom Ehlert)
         Fix handling of very long path names (Tom Ehlert)
         FindFirst/FindNext fixes (Tom Ehlert)
         Configuration for libm.mak is in config.mak (Martin Stromberg)
         NLS fix to include pointer to CharMapSrvc. Note: these are
          changes to automatically generated .asm files, but the
          generator (GRAB_UNF.EXE) is missing. (thanks Tom Ehlert)
         DosSelectDrv fix (Martin Stromberg)
         config.c always converts to upper case and handles dos=umb correctly

2000 Dec 15 - Build 2022
-------- James Tabor (jimtabor@infohwy.com)
+ Fixes	 Added Patches from Bart Oldeman (bart@dosemu.org)
         Fix for NLAST in globals.h and change default return in inthndlr.c.

2000 Oct 29 - Build 2022
-------- James Tabor (jimtabor@infohwy.com)
         Rebuild local cvs tree after a crash. Update CVS at Sourceforge.net
         with changes.

2000 Sep 04 - Build 2022
-------- James Tabor (jimtabor@infohwy.com)
+ ADD	 Adding Ron Cemer patch for Share support!

2000 Sep 04 - Build 2022
-------- James Tabor (jimtabor@infohwy.com)
+ Fixes  Brian Reifsnyder (reifsnyderb@mindspring.com)
         Modified dskxfer() such that error codes are now returned.
         Functions that rely on dskxfer() have also been modified accordingly.
         Modified interrupts 0x25 & 0x26 to return more accurate error codes.
         Updated dskxfer() prototype.

2000 Aug 15 - Build 2022
-------- James Tabor (jimtabor@infohwy.com)
         2000/08/12 22:49:00  Ron Cemer (roncemer@gte.net)
         Fixed writeblock() to only use getbuf() if writing a
         complete sector; otherwise use getbloc() and do a
         read-modify-write to prevent writing garbage back
         over pre-existing data in the file.
         This was a major BUG.

2000 Aug 05 - Build 2021
-------- James Tabor (jimtabor@infohwy.com)
         Clean up and finish umb code to get 2021 out.

2000 Jul 26 - Build 2021
-------- James Tabor (jimtabor@infohwy.com)
+ Fix    New patch from Ron IsDevice and truename fix.

2000 Jul 14 - Build 2021
-------- James Tabor (jimtabor@infohwy.com)
+ Add    Added NLS patches from Steffen Kaiser and patch from Ron
         (roncemer@gte.net).

2000 Jun 25 - Build 2021
-------- James Tabor (jimtabor@infohwy.com)
+ Add    Add and Fix support for UMB's.

2000 Jun 20 - Build 2021
-------- James Tabor (jimtabor@infohwy.com)
+ Fix	 Bart Oldeman (bart@dosemu.org) found bugs with copy
         command using Dosemu Lredir. Fixed Dosfns return for ReadCount,
         WriteCount and  DosGetFattr. Fixed the return in int2f.asm for
         Read/Write Remote. By adding xor ax,ax.
         I found some more return bugs in int2f.asm after adding Barts
         patch.

2000 Jun 08 - Build 2021
-------- James Tabor (jimtabor@infohwy.com)
+ Add    Started the UMB code. Devicehigh and dos=umb only works with
         Dosemu for now.

2000 Jun 07 - Build 2021
-------- James Tabor (jimtabor@infohwy.com)
+ Add    Int2f added code for Fastopen call.
         Now MSD Scandisk works!

2000 Jun 06 - Build 2021
-------- James Tabor (jimtabor@infohwy.com)
+ Add    Dos Func 0x59 and found a redirector bug in fncfns.c.

2000 Jun 01 - Build 2021
-------- James Tabor (jimtabor@infohwy.com)
+ Fix    Lastdrive is a real number 1 thru 26 not 0 thru 25.
+ Fix    Ioctl and Dsk did not return the currect AX for Ioctl calls.

2000 Jun 01 - Build 2021
-------- James Tabor (jimtabor@infohwy.com)
+ Clean  Removed test prinf statements in source.
* Thanks to Lixing Yuan for pointing out an copy to root error.

2000 May 31 - Build 2021
-------- James Tabor (jimtabor@infohwy.com)
+ Patch  Lixing Yuan (yuanlixg@china.com) Patch for parsing bug in
	 FindFirst with wildcards -> ParseDosName (dosnames.c).

2000 May 28 - Build 2021
-------- James Tabor (jimtabor@infohwy.com)
+ Added  Open/Close/Media check to dsk.c and io.asm.
+ Fixed  Device checking in truename. Truename needs to be rewriten.

2000 May 26 - Build 2020
-------- James Tabor (jimtabor@infohwy.com)
         Code Clean up and Now the Release.

2000 May 26 - Build 2020
-------- James Tabor (jimtabor@infohwy.com)
+ Fixed  IsDevice is used in FcbFns.c and DosFns.c. I removed IsDevice
         from DosNames.c an placed it in DosFns.c. FcbFns had dup code
         and it was removed. This fixed all the functions using IsDevice.

         Truename works now. I consider it dangerous and brain damaged.
         Note:
          truename X:\DIR\con -> X:/CON, note the '/'.
          truename foo*.* -> X:\DIR\FOO?????.???
          truename *.*\*.*\*.* -> ????????.???\????????.???\????????.???
          truename *.*\*.**\*.* -> endless Loop
             I will fix this later ;^)

         Found InitPSP running 3 time. On the 2'nd run the standard handles
         were closed with out DosClose. Now Device Drivers can Print out
         there startup info.

+ Added  New IOCTL code in Dsk.c.

2000 May 26 - Build 2020
-------- James Tabor (jimtabor@infohwy.com)
+ Fix    Kolyan Ksenev (7207@mx.csd.tsu.ru) (nik0la@acm.org)
         found Major bugs in Task.c and chario.c.

2000 May 25 - Build 2020
-------- James Tabor (jimtabor@infohwy.com)
+ Fixed  Project history.

2000 May 17 - Build 2020
-------- James Tabor (jimtabor@infohwy.com)
+ Fixed  Delete, Rename, Mkdir, and Rmdir. Comment out isDevice. There is
         a serious bug in isDevice.
+ Added  Finished adding function code for disk serial number support.
+ Clean  Cleaned up source and removed duplicate functions.

2000 May 14 - Build 2020
-------- James Tabor (jimtabor@infohwy.com)
+ Clean  Cleaned out the remaining CR's.

2000 May 08 - Build 2020
-------- James Tabor (jimtabor@infohwy.com)
+ Update Started Update to the New CVS at Sourceforge.net. Setting source
         from 2018 to 2020.

2000 May 06
-------- Jim Hall (jhall1.isd.net)
+ Import Jim Hall imported the CVS from gcfl.net to Sourceforge.net.

2000 Apr 28 - Build 2020
-------- James Tabor (jimtabor@infohwy.com)
+ Added  Dos Function calls 0x69, and 0x6C. IOCTL support in disk driver.
         New functions not yet fully implemented.
         Clean up DSK.C, IOCTL.C and FCBFNS.C. Removed old blk_device
         pointers.

2000 Apr 03 - Build 2020
-------- James Tabor (jimtabor@infohwy.com)
+ Fixed  All DPB chains were linking to -1.

2000 Apr 02 - Build 2020
-------- James Tabor (jimtabor@infohwy.com)
+ Fixed  Dos_Free returned wrong due to MaxCluster Calc.
	 Media_Check MaxCluster count wrong, needed +1.

2000 Apr 01 - Build 2020
-------- James Tabor (jimtabor@infohwy.com)
+ fixed  Unable to cd back out of cdrom directories.

2000 Mar 31 - Build 2019
-------- James Tabor (jimtabor@infohwy.com)
+ added Eric W. Biederman patches via CVS.

2000 Mar 25
-------- Eric Biederman
+ Fixed	 Lastdrive handling
+ Fixed	 Not enough drives for number present devices
+ Added    Working (though not perfect network redirector)
           Note: Error codes internal to freedos are negative
                 Error codes external to freedos are postive.
                 The network redirector is external to freedos...
           Note: Running the nonredirected functions on a redirected
                 drive is dangerous.   My patch is very careful
                 not to.  Except in truename.  Where (a) it is safe
                 and (b) I think it is required, and (c) it is needed
                 by dosemu.

2000 Mar 19 - Build 2019
-------- James Tabor (jimtabor@infohwy.com)
* Jean-Francois <lozevis.jeanfrancois@free.fr> email noting
  the set/clear interrupt was reverse in order.

2000 Mar 17 - Build 2019
-------- Steffen Kaiser (Steffen.Kaiser@fh-rhein-sieg.de)
+ Fixed Config.c COUNTRY= statement
+ Fixed *.c to call upFMem() when upcasing filenames
- Removed everything to load NLS into memory
= Redesigned hardcoded NLS information

--> The kernel will now return the proper information for the
    hardcoded NLS (U.S.A. / CP437), it would return the correct
    information for other NLS, too, if there would be a NLSFUNC
    available, which is not at this time.

NOTE: The way the external NLSFUNC is called does not look well,
therefore expect a change soon.

2000 Mar 15 - Build 2019
-------- James Tabor (jimtabor@infohwy.com)
* Dennis Newbold and Massimo De Munari email kernel bug reports
  with changes to Globals.h and Inthndlr.c. Fix to leap year and
  Delete file return code.
* Michal Meller found a bug in media_check. It return the wrong
  value of sector count. Change in FATFS.C.
* Fixed Func 0x32 based on information from Marty <k3pbu@arrl.net>.
  Func 0x32 Get Drive Parameter BLK did not work.

2000 Mar 09 - Build 2018
-------- James Tabor (jimtabor@infohwy.com)
Added   CDS and made FD CDS based. Changes encompass all of the
	code for FD.
Fixed   Task.c, rewritten code from FINODE to SFT function calls.
	Unable to execute from CD. Main.c and Config.c has small
	changes.
Fixed   Device drivers are unable to write to con. Rewritten code to
	relocate DOS_PSP pointer to 050:0000. Removed references to
	DOS_PSP in DosFns.c.
Added   Network and Redirection function calls in Inthndlr.c and
	network.c.

I have a note in FatFs.c line 313, describing functions not yet
supported for networking. I don't understand Pats thoughts on SFT to
FINODE. IMHO it would have been easier to stay with SFT all through
the code.

I tested MS-Dos 6.22 Command and found it unable to do Find First or
Next. This too could explain why MSCDEX does the same thing. I only
test this with the current FDCommand at the time, so this could have
changed.

1999 Sep 24 - Build 2017
-------- John Price (linux-guru@gcfl.net)
* Per Jens Horstmeier's email, changed boot sector code to make
  Siemens CDROM's bootable.  The changes should be OK for all other
  machines too (in theory).

1999 Sep 22 - Build 2016
-------- John Price (linux-guru@gcfl.net)
* Turned off debug output from the kernel.  It does not seem to be
  necessary at this time.
* Changed boot sector to do single-sector reads instead of
  multi-sector reads.  Appearantly this was part of the reason the
  kernel would not boot from a 720K, or other format floppies.  Thanx
  to Charles Dye for the info.

1999 Sep 16 - Build 2016
-------- James Tabor (jimtabor@infohwy.com)
* Added Networking and Server Call
* Added Dos Idle call
* fixed Console.asm ConInStat

1999 Sep 13 - Build 2014
-------- John Price (linux-guru@gcfl.net)
* Deleted some files from the drivers directory that were not being
  used.
* Changed the LIB.MAK file so it would work for TC2 or TC3 or higher.
* Changed SYS.COM so that it creates a sys.log file with more debug
  information to help debug problems with making boot disks.

1999 Sep 13 - Build 2014
-------- James Tabor (jimtabor@infohwy.com)
* Submitted changes to CONSOLE.ASM & INTHNDLR.ASM to fix the INT21
  func 0B bug.

1999 Sep 13 - Build 2014
-------- Helmut Fritsch (helmut.fritsch@gcd-hs.de)
* Submitted changes to CONSOLE.ASM to fix the INT21 func 0B bug.

1999 Sep 10 - Build 2014
-------- ror4 (f2xm1@crosswinds.net)
* At the suggestion of Mr John Price, modified the int 0x25 and int
  0x26 so that they no longer update the disk buffers (int 0x26 only
  invalidates the buffers for the specified drive). This is to avoid
  inconsistent disk buffers from appearing in the buffer chain due to
  interactions between int 0x25/0x26 and file read/write operations.

1999 Aug 24 - Build 2013
-------- John Price (linux-guru@gcfl.net)
* With ideas from ror4, I redid the build batch file so you can
  specify where what make to use.
* Also created CONFIG.M and CONFIG.B which should be copied to
  CONFIG.MAK and CONFIG.BAT, respecively, and edited to reflect the
  users configuration.  This keeps new versions from replacing the
  configuration files so the user does not have to keep reseting
  their configutation.

1999 Aug 15 - Build 2013
-------- ror4 (ror4@angelfire.com)
* Patched the source so that it can be compiled with Turbo C 2.01.
  (`asm' statements were rewritten into very ugly equivalents... they
  probably need more work. :( )
* Modified the `dmatch' structure in `hdr/dirmatch.h' so that the
  `dm_dirstart' field is in the right place, and also to make it
  compile under TC 2.01, which doesn't allow bit fields of any types
  other than signed or unsigned int.
* Fixed a few minor bugs in error code returning in `kernel/fatfs.c'.

1999 Jul 16 - Build 2012
-------- ror4 (ror4@iname.com)
* Finally ported all the assembly modules to `nasm'. *phew*
* Undid plonee's patches to `kernel/fatfs.c' (sorry). They were
  causing the resulting findfirst/findnext DTA structures to be
  incompatible with MSDOS's.
* Also rewrote all the pattern copying code in `dos_findfirst' in
  `kernel/fatdir.c' to prevent a bad buffer overflow problem.
* Modified the disk buffer handling code, so that logical sector
  numbers in disk buffers are now 0-based instead of 1-based.
* int 0x25 and int 0x26 now do multi-sector reads/writes.

1999 Jul 14 - Build 2012
-------- ror4 (ror4@iname.com)
* Ported the modules in the `drivers/' branch to `nasm'.

1999 May 04 - Build 2011
-------- ror4 (ror4@cryogen.com)
* Fixed the code for converting day numbers into Julian calendar
  dates: the first and last days of each month are now returned
  correctly.
* Undid a change to the code to get the day of the week.

1999 May 02 - Build 2011
-------- John Price (linux-guru@gcfl.net)
* blockio.c: changed getblock and getbuf so that they leave at least
  3 FAT type buffers valid.  This helps because the FAT is accessed
  very often compared to other sectors.
* fatfs.c: Fixed a bug in map_cluster so it will optimize FAT reads
  on disks that have more than one sector per cluster.  This
  sigificantly improved disk access of big files on hard drives.

1999 May 02 - Build 2011
-------- ror4 (ror4@cryogen.com)
* Corrected the `struct buffer' definition in `kernel/globals.h' so
  that it corresponds exactly to Ralf Brown's description of a DOS 3.x
  buffer.
* Also fixed the problem with FATs > 255 sectors, by making use of an
  originally unused field in the buffer structure.

1999 May 01 - Build 2011
-------- ror4 (ror4@cryogen.com)
* Fixed a problem which caused disk corruption on partitions with
  FATs larger than 127 sectors. (However, FATs larger than 255
  sectors may still experience problems -- this is due to a
  limitation of the DOS 3.x buffering scheme.)
* Fixed a bug in the handling of the `stacks=' command in
  `(fd)config.sys' which caused the system to behave strangely.

1999 Apr 22 - Build 2011
-------- Steffen Kaiser (Steffen.Kaiser@fh-rhein-sieg.de)
bugfix: memmgr.c: Invalid returned largest size in MemLargest()
fix: memmgr.c: DosMemLargest: change prototype to match its useage
bugfix: inthdlr.c: 0x49: ES is decremented
fix: inthdlr.c: 0x00: DosMemCheck() does nothing --> added panic()
fix: inthdlr.c: 0x4c: DosMemCheck() does nothing --> added panic()
fix: inthdlr.c: 0x00: changed to make it the same as DOS-4C-00
	Both actions differed e.g. in ErrorMode
chg: memmgr.c: the 'name' field of the MCB is never initialized by
	DOS-48, DOS-49 or DOS-4A. Leave this to the program loading function.
bugfix: memmgr.c: adjust_far() / add_far():
	Both function together (and the way they are used) don't make sense:
	adjust_far() normalizes a far pointer, add_far() generates a linear
	address. Usually both are used this way:
		far_poi = adjust_far(far_poi);
		while(...) {
			...
			far_poi = add_far(far_poi, uword);
			...
		}
	First one makes sure that 'far_poi' is normalized, then far_poi
	becomes a linear address, which makes it very difficult to use
	it, because the possibility to get a segment warp gets very high.
	-->
		Change: add_far() also returns a normalized real mode pointer
		as adjust_far() does.
	Probably in DOS-C supporting various architecures thee functions
	served other duties, but the current useage is highly dangerous.
bugfix: task.c: ChildEnv(): nEnvSize didn't counted the last '\0'
bugfix: task.c: ChildEnv(): Allocation: maximum absolute filename to
	short and forgot the word counter
bugfix: task.c: ChildEnv(): for very corrupt environments, the
	copy function failed.
bugfix: task.c: DosExeLoader(): If exe_size > allocated_size or
	DosMemLargest() failes, the environment is not deallocated
bugfix: task.c: DosExeLoader(): Calculating the exe_size to be
	allocated. At both places (+ header.exMinAlloc & ...MaxAlloc)
	sizeof(psp) is added to exe_size. Why? image_size already
	contains sizeof(psp).
chg: task.c: DosExeLoader()/DosComLoader(): MCB patching and command
	line copying is no outside of those functions
chg: asmsupt.asm: _fbcopy: re-use parts of _bcopy
add: asmsupt.asm: fmemset, fmemclr, fmemclra {Replace the explicit
	for() loops}

1999 Apr 22 - Build 2011
-------- ror4 (ror4@cryogen.com)
* Ported boot.asm to NASM.  The plan is to port all assembly to NASM
  over time.

1999 Apr 19 - Build 2010
-------- John Price (linux-guru@gcfl.net)
* Undid the change I made to getblock below because it DID NOT speed
anything up, and in fact slowed access down.

1999 Apr 18 - Build 2009
-------- John Price (linux-guru@gcfl.net)
* change getblock so that it flushes all buffers for a drive when it
  has to flush one of them to make room.  This should speed disk
  access slightly.
* Change the boot sector so there is a compile-time option to use
  multi-sector IO or single-sector IO.  The default is multi since
  ror4 seemed to have fixed the problem we had before.

1999 Apr 18 - Build 2009
-------- ror4 (ror4@cryogen.com)
* The boot sector can now load the kernel properly from a hard disk.
* Other minor changes.

1999 Apr 16 - Build 2008
-------- ror4 (ror4@cryogen.com)
* Modified the block device driver to prepare it for multi-sector I/O
  support.  Among other things, the driver can now handle transfer
  buffers which cross DMA boundaries.
* Some other minor changes.

1999 Apr 15 - Build 2008
-------- John Price (linux-guru@gcfl.net)
* Changed mainly the map_cluster function in fatfs.c so that instead
  of starting at the beginning of the FAT chain every time, it will
  be smart about it, and start at the last FAT location that it was
  before if it can.  This speeds up disk access considerably
  especially on slower machines.

1999 Apr 15 - Build 2008
-------- Steffen Kaiser (Steffen.Kaiser@fh-rhein-sieg.de)
bugfix: ^Break handler according cmt1.txt
bugfix: DosCreat(): Detection for Devices and extension:
	the semi-colon behind if(*froot) is definitely wrong, whether
	one wants CON.EXT to be interpreted as CON or not.
bugfix: DosOpen(): dito

* Re-implementation of ^Break handler -- 1999/03/27 ska
  + Warning: The handle_break() function assumes that the InDOS flag
  was incremented (except if ErrorMode is true). Never call
  handle_break() unless the InDOS flag has been incremented within
  this reentrant call of DOS.

  + ^Break is detected and handled at certain places within the
  kernel only:  a) within the CON: device when reading or writing a
  character, and b) when entering the INT-21 service (if extended
  break checking is enabled).  At these places the process flow can
  be modified to: either a) redo the interrupted function or b) abort
  the currently running process.

  + Both actions are performed by switching back to the user stack
  and enter INT-21 handler again. If to terminate the program, AX is
  modified into 4C00h.

  + By default, if the user has no ^Break handler installed, the
  program is terminated.

  + Heavy change: The original implementation installed an unique
  INT-23 handler that directly called the actions performed
  DOS-4C-XX.  In fact, this was identically with when the user had an
  own handler installed and returned the Carry flag set, except that
  it was somewhat quicker, because the kernel need not decode the
  4C00h command.  Now the Carry flag is set prior the call of INT-23,
  so the default action is to terminate the program.

  + Note: INT-23 is called with all registers as they are passed to
  the INT-21 entry. When they are modified, they are passed
  _modified_ to the API interpreter. This also allows the DOS1-style
  termination by to load register AH with 0 (zero).

  + RBIL says:
     "any DOS call may safely be made within the INT 23 handler,
     although the handler must check for a recursive invocation if it
     does call DOS"
  This can be interpreted so or so, the problem is that the user can
  call DOS again, what would overwrite the saved _usr_stack pointer
  with a different value and, therefore, cannot be used to check if
  INT-23 was returned by RETF or RETF2/IRET.

  Because a recursive invokation of INT-23 is to prevented by the
  user, the kernel could internally save SP to somewhere else.
  However:
  a) where?
  b) is it reliable that the user ever returns from INT-23 at all?

  The implemented method uses the same mechanism as fail-safe intr()
  function is implemented: A little piece of code is constructed
  within the stack, which contains the value of SP as an operand of
  an immediate MOV instruction.


1999 Apr 13 - Build 2007
-------- ror4 (ror4@cryogen.com)
* The boot sector now moves itself to the last 512 bytes of
  conventional memory instead of a lower memory location.
* The kernel startup code has also been modified so that it works
  with the new boot sector.

1999 Apr 12 - Build 2007
-------- ror4 (ror4@cryogen.com)
* The directory scanning functions (`findfirst'/`findnext') now also
  recognize more flavours of the volume label attribute byte (namely
  0x09, 0x28 and 0x29).
* Subdirectories are now no longer assumed to have the same size as
  the root directory.
* `device/device.lib' is now included as a dependency in the kernel
  makefile.
* Removed several unused assembler modules from the `device/' branch
  (see `device/device.mak').

1999 Apr 11 - Build 2007
-------- ror4 (ror4@cryogen.com)
* The kernel now reads times from the system clock (0x40:0x6c)
  instead of the RTC. The RTC is only used during startup to
  initialize the system clock. (As a side effect of this,
  `ReadATClock' has been moved from `_TEXT' to `INIT_TEXT'.)
* Checking for leap years is now improved -- year numbers which are
  divisible by 100 but not by 400 are not counted as leap years. (Not
  that it matters for year 2000, though.)
* The scaling factor used to convert the system time count to a
  second count has been changed from 18.2 to the more accurate (?)
  19663/1080.
* Day numbers used by `clock$' are now 0-based (as in MSDOS) instead
  of 1-based. Thus 1 Jan 1980 is now day number 0.

1999 Apr 10 - Build 2007
-------- ror4 (ror4@cryogen.com)
* Added code to prevent the kernel from returning path names
  containing double backslashes.

1999 Apr 9 - Build 2007
-------- ror4 (ror4@usa.net)
* File handles are now cloned properly when a child process is spawned.
* The `DosClose' function now also frees SFT entries corresponding to
  devices, not only those entries corresponding to files.
* Removed a (minor) memory corruption bug in the code for int 0x21,
  ah = 0x09.

1999 Apr 6 - Build 2007
-------- ror4 (ror4@cryogen.com)
* Functions ax = 0x5700 and 0x5701 (get/set file date and time) now
  return the right values at the right times. (They used to return
  success when there's an error, and return error when there's a
  success.)
* Removed the `/k' switch to the linker in `sys/sys.mak'.

1999 Apr 4 - Build 2006
-------- John Price (linux-guru@gcfl.net)
* added "version=" directive so that you can change the version that
  the kernel reports.  Usage: version=<major>.<minor> (i.e.
  version=6.22)

1999 Apr 4 - Build 2006
-------- ror4 (ror4@usa.net)
* Fixed the file name parsing function (`ParseDosNames') so that it
  handles single-character path names correctly.
* Also modified the functions which call `ParseDosNames' to check its
  return value instead of assuming that it is always successful.
  (This is not currentl useful, but it will be when error checking is
  introduced into `ParseDosNames'. In other words, there'll be more
  changes to `ParseDosNames' in the near future...)

* After wondering for a long time why the kernel text segment was
  always getting corrupted when I ran DJGPP `bash' 1.14.7, I finally
  decided to examine the code occurring before the handler for int
  0x21, ah = 0x60, and I found out why... :)
* Fixed the problem of int 0x21, ax = 0x5d06 causing memory
  corruption.
* Corrected the types of `internal_data', `swap_always' and
  `swap_indos' in `kernel/globals.h'.

* Improved checking for invalid file names in `ParseDosName'
  (although I'm still not sure whether the check is water-tight or
  not).
* Changed the default path setting from `PATH=' to `PATH=.'.

* Output from character I/O functions now goes to standard output as
  it should, instead of the console. Also, there's now a clear
  distinction between console input/output and standard input/output.
* Tabs are now expanded during writes to the console device.
* Removed a hard-wired limit on the number of entries in a JFT.
  (Although I'm not sure whether this is really correct...)
* Many other changes to the file descriptor handling code.

1999 Mar 29 - Build 2006
-------- John Price (linux-guru@gcfl.net)
* Changed boot loader so it prints some feedback info while booting.
  Removed code to handle FAT12 and FAT16, and code to calculate the
  start of the fat, rootdir, and data.  Moved these functions into
  the sys command.  Now there are two versions of the boot loader
  created, one to handle FAT16, and one for FAT12.  These are
  hard-coded into the sys command, so the need for the boot.bin file
  is obsolete.
* created a new program (bin2c) to convert the boot loader binary
  file into a header file that can be included in the sys program as
  an array of bytes.

1999 Mar 29 - Build 2006
-------- ror4 (ror4@usa.net)
* Changed the class of `_BSSEND' from "STACK" to "BSS" in the
  `drivers/' branch (which I forgot about in my last patch).
* Removed all traces of the `CONST' segment, since it was causing
  `IGROUP' to be assimilated into `DGROUP', which shouldn't happen.
* Added a `(void)' cast to the `setvec' macro in `kernel/globals.h'
  (`setvec' no longer returns the original ISR vector).
* Changed an incorrect error message in `sys/sys.c'.
* Removed `drivers/setvec.asm', since it's no longer needed.
* Also removed `kernel/krnstart'.
* The name field in a process's MCB is now filled in the same manner
  as in MSDOS -- instead of being padded to the right with spaces, it
  is now terminated with '\0'. Also, if the original file name
  doesn't have an extension, the code will stop copying the file name
  at '\0' instead of continuing to look for a '.'.
* Fixed the problem of the `switchar' syscall (int 0x21, ax = 0x3700) not
  returning the correct value.


1999 Mar 28 - Build 2005
-------- ror4 (ror4@usa.net)
* Removed the need for `ipl.sys'. (!) The kernel makefile now
  statically relocates `kernel.exe' to 0x60:0 and outputs the
  resulting binary to `kernel.sys', and the boot sector has also been
  modified to load `kernel.sys' at 0x60:0 instead of `ipl.sys' at
  0x2000:0. (I chose 0x60:0 because it's the first 512-byte boundary
  occurring after the BIOS data area, 0x40:0.) Finally, `sys.com' has
  also been updated.

* Also changed the boot sector code in some other ways. In
  particular, because `kernel.sys' is rather large, I had to add some
  code to move the boot sector away from 0:0x7c00 to somewhere
  higher. (For 640K systems the boot sector will be shifted to
  0x6000:0x7c00. However, there may be problems on systems with very
  little conventional memory -- I'll probably look into this later.)

* Made some minor changes to the assembler source files so that they
  can compile on `masm'. (JP: The code still compiles fine with tasm
  too).

* Also changed several incorrect label references in the assembler
  sources. (JP: These changes fixed the "Fixup" errors we been
  talking about in the list)

* Eliminated redundant re-makes of files in the various makefiles.
  For one thing, `*.cfg' files are no longer generated from the
  makefiles, but are independent from them. (I didn't like the idea
  of having to compile an entire branch each time I edit a
  makefile...) Also, intermediate files are now retained instead of
  deleted.

* Also made some changes to `build.bat' (you'll know them when you
  see them).

* Added a file `lib/libm.mak'

* Added a file `kernel/krnstart

* The code required to initialize the kernel (or rather most of it)
  is no longer retained in memory after the initialization process is
  done. I accomplished this by moving most of the initialization code
  from `_TEXT' to a new segment named `INIT_TEXT'. Of course, I also
  had to introduce lots of other changes in order for everything to
  compile and run properly:
  - Added code to `kernel/src/kernel/kernel.asm' to move the contents
    of `INIT_TEXT' to the top of conventional memory and continue
    from there.  Control is only transferred back to `_TEXT' when the
    kernel calls `p_0'.
  - Many functions are called from both `_TEXT' and `INIT_TEXT'. To
    fix this, I created far wrappers for these functions which can
    then be called from `INIT_TEXT'. (E.g. for `execrh' there's a
    corresponding far function named `init_call_execrh' which simply
    calls `execrh' with its own parameters.) One exception to this is
    `printf' -- instead of creating a far wrapper for a near
    `printf', I created a near wrapper for a far `printf' (now called
    `init_call_printf'), because it was easier that way. :)
  - Most functions which are required only during initialization time
    were shifted into `INIT_TEXT'. (There are still some functions
    which should rightfully go into `INIT_TEXT', but are retained in
    `_TEXT' as far functions, because I found it too difficult to
    move them out. :( ) Because Turbo C only allows at most one code
    segment to be defined for each module, I had to shift some
    functions around within the source tree -- the file
    `kernel/src/kernel/proto.h' says it all.
  - A cosmetic change mentioned here for completeness: all functions
    defined in `INIT_TEXT' are now marked with the word `INIT' (in
    fact a null macro) so that the reader can easily distinguish them
    from functions defined in `_TEXT'.

* Replaced `exit' calls with `for (;;);'.

* Changed `strcpy' into a macro which calls `scopy'.

* Also redefined `setvec' to be a macro (I didn't want to waste time
  writing a far wrapper for it).

* Removed the `break_key' function in `kernel/src/kernel/kernel.asm'.

* `low_int25_handler' and `low_int26_handler' are now of type
  `void interrupt far()' instead of `void near()'. (I hope I updated
  `entry.asm' correctly -- I never tested `int 0x25' and `int 0x26'...)

* Changed the class of `_BSSEND' from "STACK" to "BSS" -- "STACK" is
  now used for a separate stack segment (`_STACK').

* Assembler modules now include `segs.inc' instead of having their
  own long list of segment definitions. (Some day I'll update the
  makefile dependencies to reflect this.)

* Also made a few minor changes to the assembler modules so that
  `masm' won't complain.

* Changed the `-X' switch in `kernel.cfg' to `-X-', so that I don't
  have to worry about C module dependencies.

* Removed the definition of `CFLAGS' from the makefile -- everything
  is now in `kernel.cfg'.

* Created a file `kernel/src/kernel/init-mod.h' which is included by
  modules whose code is supposed to go into `INIT_TEXT' instead of
  `TEXT'.

* This diff solves the problem of the MCB of a process not having a
  correct value in its name field (bug report #6).
  (The definition of the `toupper' macro is because I shifted the
  `toupper' function into `INIT_TEXT' a while ago, and therefore
  can't be called from `_TEXT' now...)


-------- John Price (linux-guru@gcfl.net)
* Made changes so you can create a directory with the same name as a
  volume label, but you still can't rename or delete it!

* Fix findfirst and findnext functions so that act as they should.
  (i.e. If the attrib has only the volume label set, then it returns
  the volume label entry in the root directory, else it returns the
  files/directories that are specified with the attrib, ignoring the
  read-only and archive bits (these are always returned).

* reorginize the source tree.  Removed IPL directory, and command.
  Moved all the file system C files into the kernel directory.
  Modifed build.bat, clean.bat, and all the make files to reflect the
  new tree.

* changed so that kernel will look for a "fdconfig.sys" file, and use
  it INSTEAD of config.sys.  If it does not find it, it will look
  for, and read config.sys, if it exists.

* Fixed so that if you call an INT 21 function with AH containing a
  unsupported function, the carry flag is set.

----- older history, from rcs logs.

13 Nov 2002 tom
initclk.c:
Initial revision

2001/11/04 bartoldeman
install.bat:
Text files need to be LF ended at the server. So be it...

2001/04/29           brianreifsnyder
dsk.c:
Added phase 1 support for LBA hard drives

20 Apr 2001  Bart Oldeman
buffer.h:
Initial revision.

2001/04/16 bartoldeman
dsk.c:
Fixed handles, config.sys drivers, warnings. Enabled INT21/AH=6C, printf %S/%Fs

2001/04/15 bartoldeman
dsk.c:
See history.txt for the list of fixes.

2001/03/27 bartoldeman
dsk.c:
dsk.c (reported by Nagy Daniel), inthndlr and int25/26 fixes by Tom Ehlert.

2001/03/24 bartoldeman
dsk.c:
See history.txt: dsk.c changes, warning removal and int21 entry handling.

2001/03/22 bartoldeman
install.bat:
Change LF to CR/LF in batch files.

2001/03/21 bartoldeman
dsk.c:
See history.txt for changes. Bug fixes and HMA support are the main ones.

2001/03/16 tom ehlert
inithma.c:
initial creation

2001/03/08 bartoldeman
dsk.c:
Space saving fixes from Tom Ehlert

2001/03/07 10:00:00 tomehlert
prf.c:
recoded for smaller object footprint, added main() for testing+QA

2000/10/29 jimtabor
inthndlr.c:
Adding Share Support by Ron Cemer

2000/08/15 jhall1
build.txt:
update to the build.txt file to remove references to the now-defunct
web site at gcfl.net (John's old site).

2000/08/06 jimtabor
inthndlr.c, nls_load.c:
Add new files and update cvs with patches and changes

2000/06/21 jimtabor
dsk.c, inthndlr.c:
Add UMB code, patch, and code fixes

2000/06/01 jimtabor
dsk.c:
Read History for Changes

2000/05/26 jimtabor
dsk.c:
Read History file for Change info

2000/05/25 jimtabor
dsk.c, inthndlr.c:
Fixed project history

2000/05/17 jimtabor
dsk.c, inthndlr.c:
Cleanup, add and fix source.

2000/05/11 jimtabor
inthndlr.c:
Removed #if statement

2000/05/11 jimtabor
dsk.c, inthndlr.c:
Added code for DOS FN 69 & 6C

2000/05/11 jimtabor
install.bat, inthndlr.c:
Clean up and Release

2000/05/08 jimtabor
inthndlr.c, dosnames.c, dsk.c, dosnames.h, build.txt:
Update CVS to 2020

2000/05/06 jhall1
getvec.asm, dsk.c, inthndlr.c:
The FreeDOS Kernel.  A DOS kernel that aims to be 100% compatible with
MS-DOS.  Distributed under the GNU GPL.

2000/04/29 jtabor
device.h, blockio.c, dsk.c, fatfs.c, inthndlr.c, ioctl.c:
Added new functions and clean up code

2000/04/02 jtabor
newstuff.c:
Fix ChgDir Code

2000/04/02 jtabor
dosfns.c:
Replaced ChgDir Code

2000/04/02 jtabor
dosfns.c:
Fix to DosChgDir

2000/03/31 jprice
sys.c:
Added discription of program.

2000/03/31 jtabor
config.c, dosfns.c, dosnames.c, fatdir.c, fcbfns.c, int2f.asm, main.c,
makefile, network.c, newstuff.c, proto.h, task.c:
Added Eric W. Biederman Patches

2000/03/23 ska
nls.c:
Initial revision

2000/03/20 kernel
entry.asm:
Change in Entry.asm

2000/03/18 kernel
intfns.txt:
changes in supported functions

2000/03/17 kernel
config.c, fatdir.c, fatfs.c, fcbfns.c, inthndlr.c, makefile,
network.c, nlssupt.asm, proto.h:
Steffen Kaiser's NLS changes

2000/03/17 kernel
inthndlr.c:
Fixed Func 0x32

2000/03/17 kernel
fatfs.c:
Added Change for media_check

2000/03/16 kernel
globals.h, inthndlr.c:
*** empty log message ***

2000/03/09 kernel
dosfns.c, dosnames.c, dsk.c, error.c, execrh.asm, fatdir.c, fatfs.c,
fcbfns.c, globals.h, initoem.c, int2f.asm, inthndlr.c, io.asm,
ioctl.c, kernel.asm, main.c, makefile, memmgr.c, misc.c, network.c,
newstuff.c, prf.c, proto.h, strings.c, sysclk.c, task.c, blockio.c,
break.c, chario.c, config.c, console.asm, cds.h, dcb.h, device.h,
dirmatch.h, fnode.h, mcb.h, sft.h, stacks.inc:
2017f updates by James Tabor

1999/09/25 jprice
boot.asm:
Optimize boot loader.  Documentation.

1999/09/24 jprice
boot.asm:
Added changes recommended by Jens Horstmeier
to make their bootable CD work.

1999/09/23 jprice
main.c, network.c, proto.h, globals.h, inthndlr.c, kernel.asm,
makefile, config.c, console.asm, dosfns.c, entry.asm, fatfs.c,
fcbfns.c, chario.c, boot.asm, fcb.h, sys/makefile, sys.c:
*** empty log message ***

1999/09/20 jprice
sys.c:
Changed open/creat to fopen to make TC2 happy.

1999/09/15 jprice
sys.c:
Changed boot sector writing code so easier to read.

1999/09/14 jprice
lib/makefile:
no message

1999/09/14 jprice
sys.c:
Added debug log creation to sys.com.

1999/09/14 jprice
console.asm:
no message

1999/09/14 jprice
inthndlr.c:
ror4: fix int25 & 26 are not cached.

1999/09/14 jprice
fatfs.c, dosfns.c:
Fixed bug where you could write over directories.

1999/09/13 jprice
inthndlr.c, console.asm:
Fix 210B function

1999/09/13 jprice
console.asm:
Changes from Helmut Fritsch to fix INT21 func B

1999/09/13 jprice
makefile:
Some clean up.

1999/09/13 jprice
config.b, config.b:
Added COMPILER variable

1999/09/13 jprice
lib/makefile:
Added !if so we can use TC2 or TC3 to compile.

1999/08/25 jprice
build.txt:
update

1999/08/25 jprice
config.b, clobber.bat, clean.bat, config.b, build.bat:
New build batch files.

1999/08/25 jprice
intfns.txt, build.txt, build.bat:
New build config

1999/08/25 jprice
config.b, sys/makefile, sys.c, lib/makefile, task.c, main.c, makefile,
memmgr.c, newstuff.c, proto.h, strings.c, fatfs.c, globals.h,
initoem.c, inthndlr.c, blockio.c, chario.c, config.c, dosfns.c,
fatdir.c, date.h, dirmatch.h, portab.h, time.h, drivers/makefile,
install.bat:
ror4 patches to allow TC 2.01 compile.

1999/08/10 jprice
clobber.bat:
case

1999/08/10 jprice
dsk.c, inthndlr.c:
ror4 2011-04 patch

1999/08/10 jprice
globals.h, inthndlr.c, fatfs.c, fattab.c, blockio.c:
ror4 2011-03 patch

1999/08/10 jprice
irqstack.asm, kernel.asm, makefile, nlssupt.asm, printer.asm,
procsupt.asm, segs.inc, apisupt.asm, asmsupt.asm, console.asm, entry.asm, execrh.asm, fatdir.c,
int2f.asm, io.asm, io.inc, stacks.inc:
ror4 2011-02 patch

1999/08/10 jprice
wrpcclk.asm, wratclk.asm, rdpcclk.asm, drivers/makefile, getvec.asm, floppy.asm:
ror4 2011-01 patch

1999/05/04 jprice
systime.c:
ror4 date fix

1999/05/03 jprice
fat.h:
Changed some variables from signed to unsigned.

1999/05/03 jprice
blockio.c, config.c, dosfns.c, fatdir.c, fatfs.c, fattab.c, globals.h,
inthndlr.c, misc.c, proto.h:
Patches from ror4 and many changed of signed to unsigned variables.

1999/05/03 jprice
sys/makefile:
no message

1999/05/03 jprice
fatfs.c:
Fixed bug in map_cluster function

1999/05/03 jprice
blockio.c:
Changed getblock & getbuf so that they leave at least 3 buffer for FAT data.

1999/04/23 jprice
procsupt.asm:
Fixed got_cbreak function.

1999/04/23 jprice
makefile:
no message

1999/04/23 jprice
asmsupt.asm, inthndlr.c, memmgr.c, misc.c, proto.h, task.c:
Memory manager changes made by ska

1999/04/23 jprice
clobber.bat:
Initial include

1999/04/23 jprice
clean.bat, build.bat, sys/makefile, lib/makefile, makefile, drivers/makefile:
Improved by jprice

1999/04/23 jprice
boot/makefile:
Ported to NASM by ror4. Improvements

1999/04/23 jprice
boot.asm:
Ported to NASM by ror4

1999/04/21 jprice
blockio.c:
no message

1999/04/18 jprice
blockio.c:
no message

1999/04/17 jprice
sys.c, boot.asm:
Fixed multi-sector code

1999/04/17 jprice
build.bat:
ror4 patches

1999/04/17 jprice
boot.asm:
Changed so multi-sector IO is optional.

1999/04/16 jprice
blockio.c, config.c, dsk.c, globals.h, main.c, proto.h, floppy.asm:
ror4 multi-sector IO

1999/04/16 jprice
break.c:
Steffen contributed.

1999/04/16 jprice
dosfns.c, globals.h, inthndlr.c, irqstack.asm, main.c, makefile, procsupt.asm,
proto.h, chario.c, config.c:
Steffen c-break handler changes

1999/04/16 jprice
fatfs.c, fattab.c, globals.h, main.c, task.c, blockio.c, config.c,
dsk.c, fatdir.c, fnode.h, dcb.h:
Optimized FAT handling

1999/04/13 jprice
kernel.asm:
changes for boot loader

1999/04/13 jprice
boot.asm:
Moves boot sector to top of mem

1999/04/13 jprice
makefile, fatdir.c, drivers/makefile:
no message

1999/04/12 jprice
fatfs.c, blockio.c:
Using getbuf to write data instead of getblock
using getblock made it read the block before it wrote it

1999/04/12 jprice
systime.c, config.c, dosfns.c, fatfs.c, globals.h, main.c, proto.h,
sysclk.c:
more ror4 patches.  Changes for multi-block IO

1999/04/12 jprice
rdpcclk.asm, rdatclk.asm:
more ror4 patches

1999/04/11 jprice
blockio.c:
Working on multi-block IO

1999/04/11 jprice
globals.h, inthndlr.c, main.c, newstuff.c, proto.h, task.c, blockio.c,
config.c, dosfns.c, fatdir.c, fatfs.c, fattab.c:
ror4 patches

1999/04/06 jprice
boot.asm:
Put back code to read multiple sectors at a time.

1999/04/04 jprice
config.c, globals.h, inthndlr.c, main.c, dosfns.c, dosnames.c,
fatdir.c, fatfs.c, fcbfns.c, globals.h, inthndlr.c, ioctl.c, main.c,
newstuff.c, prf.c, proto.h, strings.c, chario.c, sft.h, device.h:
no message

1999/04/01 jprice
sys.c:
SYS modified for new boot loader

1999/04/01 jprice
boot/makefile, boot.asm:
New boot loader

1999/04/01 jprice
install.bat:
no message

1999/03/29 jprice
wrpcclk.asm, wratclk.asm, rdpcclk.asm, rdatclk.asm, drivers/makefile,
getvec.asm, floppy.asm, globals.h, io.inc, task.c:
ror4 changes

1999/03/29 jprice
sys.c:
Fixed error message

1999/03/29 jprice
sys.c, syspack.c, prf.c, misc.c, fcbfns.c, fattab.c, fatfs.c,
fatdir.c, error.c, dosnames.c, dosfns.c, chario.c, blockio.c, task.c,
systime.c, sysclk.c, strings.c, proto.h, segs.inc, procsupt.asm,
printer.asm, nlssupt.asm, newstuff.c, memmgr.c, main.c, makefile,
kernel.asm, irqstack.asm, ioctl.c, io.inc, io.asm, inthndlr.c,
int2f.asm, globals.h, initoem.c, execrh.asm, entry.asm, dsk.c,
console.asm, config.c, asmsupt.asm, apisupt.asm, wrpcclk.asm,
wratclk.asm, rdpcclk.asm, rdatclk.asm, getvec.asm, floppy.asm,
drivers/makefile, install.bat, boot/makefile, boot.asm, tail.h,
time.h, sft.h, stacks.inc, process.h, portab.h, pcb.h, kbd.h, mcb.h,
file.h, fnode.h, fcb.h, exe.h, fat.h, dosnames.h, error.h, device.h,
date.h, dcb.h, cds.h, clock.h, dirmatch.h, intfns.txt, clean.bat,
build.bat:
New version without IPL.SYS

1999/03/25 jprice
fatdir.c:
Fixed findfirst & findnext functions to treat the attributes like MSDOS does.

1999/03/23 jprice
inthndlr.c:
Now sets carry when we don't support a function

1999/03/23 jprice
config.c:
Now checks for a reads fdconfig.sys file, if exists

1999/03/23 jprice
fatfs.c:
Fixed mkdir DOS function so it will create a directory with same name as the volument label

1999/03/02 jprice
inthndlr.c:
Added some comments.  Fixed some minor bugs.

1999/03/02 jprice
fatfs.c:
Fixed bugs with dos set attribute function.  Now returns correct
error code, and errors if user tries to set bits 6 & 7.

1999/03/02 jprice
boot.asm:
Added entry address for more recent versions of TLINK

1999/03/02 jprice
intfns.txt:
Updated interrupt list

1999/03/01 jprice
makefile:
Fixed so it'll work with config.mak

1999/03/01 jprice
makefile:
Turned off DEBUG define.

1999/03/01 jprice
inthndlr.c:
Added some DEBUG ifdef's so that it will compile without DEBUG defined.

1999/02/14 jprice
fatdir.c, dsk.c:
Changed check media so that it checks if a floppy disk has been changed.

1999/02/14 jprice
floppy.asm:
Added functions to check if a floppy disk has been changed.

1999/02/09 jprice
makefile, drivers/makefile, boot/makefile, clean.bat, build.bat:
Make makefile use common config.mak file

1999/02/09 jprice
blockio.c, chario.c, dosfns.c, error.c, fatdir.c, fatfs.c, fattab.c,
fcbfns.c, device.h, error.h, sysclk.c, systime.c, task.c, apisupt.asm,
asmsupt.asm, config.c, console.asm, dsk.c, entry.asm, execrh.asm,
globals.h, initoem.c, int2f.asm, inthndlr.c, io.asm, io.inc, ioctl.c,
irqstack.asm, kernel.asm, main.c, makefile, memmgr.c, newstuff.c,
nlssupt.asm, printer.asm, procsupt.asm, proto.h, segs.inc, floppy.asm:
Added Pat's 1937 kernel patches

1999/02/04 jprice
chario.c, fatfs.c, fcbfns.c, strings.c, sysclk.c, systime.c, task.c:
Formating.  Added comments.

1999/02/04 jprice
inthndlr.c:
Formating

1999/02/04 jprice
makefile:
Added option to share constants (-d).

1999/02/04 jprice
device.h:
no message

1999/02/02 jprice
dosnames.c:
Steve Miller fixed a bug with doing "cd ." would lock the machine.

1999/02/01 jprice
apisupt.asm, asmsupt.asm, config.c, dsk.c, entry.asm, execrh.asm, globals.h,
initoem.c, int2f.asm, inthndlr.c, ioctl.c, irqstack.asm, kernel.asm,
main.c, memmgr.c, newstuff.c, nlssupt.asm, procsupt.asm, proto.h,
strings.c, sysclk.c, systime.c, task.c:
Clean up; Now you can use hex numbers in config.sys. added config.sys screen function to change screen mode (28 or 43/50 lines)

1999/02/01 jprice
chario.c, dosfns.c, dosnames.c, error.c, fatdir.c, fatfs.c, fattab.c,
fcbfns.c, misc.c, prf.c, syspack.c, blockio.c:
Fixed findfirst function to find volume label with Windows long filenames

1999/02/01 jprice
cds.h, clock.h, date.h, dcb.h, device.h, dirmatch.h, dosnames.h, error.h,
exe.h, fat.h, fcb.h, file.h, fnode.h, kbd.h, mcb.h, pcb.h, portab.h, process.h,
sft.h, stacks.inc, tail.h, time.h:
Clean up

1999/01/30 jprice
clean.bat, build.bat:
Clean up

1999/01/30 jprice
main.c, config.c, initoem.c, inthndlr.c:
Clean up; Fixed bug with set attribute function.

1999/01/30 jprice
globals.h:
Clean up; commented out copyright messages while we debug.

1999/01/30 jprice
blockio.c, fatdir.c, fatfs.c:
Clean up; Fixed bug with set attribute function.  If you tried to
change the attributes of a directory, it would erase it.

1999/01/30 jprice
cds.h, clock.h, error.h, fat.h, fnode.h, build.bat:
Clean up

1999/01/22 jprice
cds.h, clock.h, date.h, dcb.h, device.h, dirmatch.h, dosnames.h, error.h,
exe.h, fat.h, fcb.h, file.h, fnode.h, kbd.h, mcb.h, pcb.h, portab.h, process.h,
sft.h, stacks.inc, tail.h, time.h, wrpcclk.asm, wratclk.asm,
rdpcclk.asm, rdatclk.asm, drivers/makefile, getvec.asm, floppy.asm,
blockio.c, chario.c, dosfns.c, dosnames.c, error.c, fatdir.c, fatfs.c,
fattab.c, fcbfns.c, misc.c, prf.c, syspack.c, procsupt.asm, proto.h,
strings.c, sysclk.c, systime.c, task.c, globals.h, initoem.c,
int2f.asm, inthndlr.c, ioctl.c, irqstack.asm, kernel.asm, main.c,
makefile, memmgr.c, newstuff.c, nlssupt.asm, apisupt.asm, asmsupt.asm,
config.c, dsk.c, entry.asm, execrh.asm, boot/makefile, boot.asm:
Formating.

1999/01/21 jprice Fixed comments.
sys.c:
Added indent program

1999/01/21 jprice Added messages to sys.  Also made
sys.c:
it create a .COM file.

1999/01/20 jprice
cds.h, clock.h, date.h, dcb.h, device.h, dirmatch.h, dosnames.h, error.h,
exe.h, fat.h, fcb.h, file.h, fnode.h, kbd.h, mcb.h, pcb.h, portab.h, process.h,
sft.h, stacks.inc, tail.h, time.h, apisupt.asm, asmsupt.asm, config.c, dsk.c,
entry.asm, execrh.asm, globals.h, initoem.c, int2f.asm, ioctl.c, irqstack.asm,
kernel.asm, main.c, makefile, memmgr.c, newstuff.c, nlssupt.asm,
procsupt.asm, proto.h, strings.c, sysclk.c, systime.c, task.c:
Imported sources

1999/01/20 jprice
wrpcclk.asm, wratclk.asm, rdpcclk.asm, rdatclk.asm, drivers/makefile,
getvec.asm, floppy.asm, boot/makefile, boot.asm, blockio.c, chario.c, dosfns.c,
dosnames.c, error.c, fatdir.c, fatfs.c, fattab.c, fcbfns.c,
inthndlr.c, misc.c, prf.c, syspack.c:
Imported sources

10 Jan 1999            SRM
makefile:
Took out "/P-" from TLINK
Changed "bcc" to "tcc"

06 Dec 1998  patv
entry.asm:
New int 21h handler code.

06 Dec 1998  patv
inthndlr.c:
Expanded due to improved int 21h handler code.

06 Dec 1998  patv
ioctl.c, proto.h, apisupt.asm, globals.h:
Expanded due to new I/O subsystem.

06 Dec 1998  patv
makefile:
Added new files for I/O subsystem.

06 Dec 1998  patv
main.c, dsk.c:
Changed due to new I/O subsystem.

06 Dec 1998  patv
irqstack.asm, newstuff.c, int2f.asm, kernel.asm, systime.c,
nlssupt.asm, asmsupt.asm, procsupt.asm, task.c, execrh.asm, fatdir.c,
fatfs.c:
Bug fixes.

06 Dec 1998  patv
dosfns.c:
Expanded dos functions due to new I/O subsystem.

06 Dec 1998  patv
fcbfns.c:
Expanded fcb functions for new I/O subsystem.

06 Dec 1998  patv
error.c:
Now handles errors like MS-DOS.

06 Dec 1998  patv
chario.c:
changes in character I/O because of new I/O subsystem.

06 Dec 1998  patv
blockio.c:
Changes in block I/O because of new I/O subsystem.

06 Dec 1998  patv
floppy.asm:
New floppy support functions.

06 Dec 1998  patv
device.h:
Changed for new I/O subsystem

06 Dec 1998  patv
error.h:
Added new errors for new I/O subsystem.

06 Dec 1998  patv
io.inc, segs.inc:
Initial revision.

09 Feb 1998  patv
fatfs.c, fattab.c:
Eliminated FAT12 EOF and error returns.

07 Feb 1998  patv
stacks.inc, pcb.h, entry.asm, procsupt.asm, inthndlr.c, task.c,
globals.h, proto.h:
Modified stack fram to match DOS standard

03 Feb 1998  patv
kernel.asm:
Added a start-up stack for loadable device drivers.  Need the separate
stack so that all int 21h functions can be called.

03 Feb 1998  patv
fatfs.c:
Fixed lseek bug.

02 Feb 1998  patv
globals.h:
Fixed size of default_drive.  Caused failures when break_ena was not zero.

31 Jan 1998  patv
task.c:
Corrected type in load high code.

31 Jan 1998  patv
task.c:
Added load high in memory option in DosExeLoader.

22 Jan 1998  patv
task.c:
Eliminated warnings.

22 Jan 1998  patv
process.h:
Had to change ps_prevps to VOID FAR * due to BC++ error.

22 Jan 1998  patv
process.h:
Corrected ps_prevpsp declaration.

22 Jan 1998  patv
task.c:
Corrected short .COM problem.

22 Jan 1998  patv
makefile:
Outdated stacks.asm.

22 Jan 1998  patv
fatfs.c:
Corrected remaining file name and extension copies that did not
account for far file nodes due to allocated FILES= spec.

22 Jan 1998  patv
inthndlr.c, proto.h, config.c, globals.h, kernel.asm, main.c,
blockio.c, dosnames.c, fatdir.c, fatfs.c:
Fixed pointer problems affecting SDA

11 Jan 1998  patv
ioctl.c, proto.h, chario.c, device.h:
Added functionality to ioctl.

08 Jan 1998  patv
chario.c:
Changed automatic requestic packets to static to save stack space.

06 Jan 1998  patv
inthndlr.c:
Broke apart int21_system from int21_handler.

06 Jan 1998  patv
kernel.asm:
Reduced device driver stack sizes.

04 Jan 1998  patv
globals.h, proto.h, inthndlr.c, newstuff.c, systime.c, main.c,
config.c, ioctl.c, memmgr.c, dsk.c, initoem.c, strings.c, sysclk.c,
task.c, fatfs.c, chario.c, dosfns.c, dosnames.c, fattab.c, fcbfns.c,
prf.c, syspack.c, blockio.c, error.c, fatdir.c, misc.c, device.h,
cds.h, clock.h, date.h, dcb.h, fat.h, file.h, fnode.h, kbd.h, mcb.h,
pcb.h, sft.h, dirmatch.h, error.h, exe.h, fcb.h, portab.h, process.h,
tail.h, time.h:
Changed Log for strip utility

04 Jan 1998  patv
kernel.asm, inthndlr.c, main.c, config.c, newstuff.c, fatfs.c:
Corrected subdirectory bug

03 Jan 1998  patv
globals.h, kernel.asm, makefile, systime.c, inthndlr.c, main.c,
proto.h, asmsupt.asm, dosfns.c, dosnames.c, fatfs.c, blockio.c,
fatdir.c, fcbfns.c:
Converted data area to SDA format

31 Dec 1997  patv
strings.c:
Added new far string functions.

30 Dec 1997  patv
chario.c:
Modified to support SDA

01 Aug 1997  patv
inthndlr.c:
COMPATIBILITY: Added return '$' in AL for function int 21h fn 09h

06 Feb 1997  patv
kernel.asm:
Reduced stack sizes for block and clock devices.

06 Feb 1997  patv
globals.h:
Changed version format string

06 Feb 1997  patv
main.c:
Modified to support new version format and changed debug message to
output drive letter instead of number.

06 Feb 1997  patv
globals.h:
Modified to support new version format

06 Feb 1997  patv
inthndlr.c, kernel.asm:
Added hooks for tsc command

30 Jan 1997  patv
makefile:
Added TSC flag for trace support.

22 Jan 1997  patv
newstuff.c, inthndlr.c, task.c, irqstack.asm:
pre-0.92 Svante Frey bug fixes.

22 Jan 1997  patv
globals.h:
Changed to support version.h and pre-0.92 Svante Frey bug fixes.

22 Jan 1997  patv
main.c:
Now does correct default drive initialization.

22 Jan 1997  patv
fatfs.c, dosfns.c:
pre-0.92 bug fixes

16 Jan 1997  patv
irqstack.asm:
Initial revision.

16 Jan 1997  patv
globals.h, main.c, memmgr.c, task.c, ioctl.c, config.c, inthndlr.c,
apisupt.asm, nlssupt.asm, proto.h, makefile, fcbfns.c, chario.c,
dosnames.c, blockio.c, dosfns.c, fatdir.c, fatfs.c, fattab.c,
device.h, fcb.h, sft.h, dsk.c, boot.asm:
Corrected copyright

10 Jan 1997  patv
boot.asm:
Re-written to support C drive and eliminate restrictions on IPL.SYS

10 Jan 1997  patv
boot/makefile:
Changed to use FreeDOS exe2bin and support new boot code

17 Dec 1996  patv
boot/makefile:
Converted to FreeDOS exe2bin.

13 Sep 1996  patv
globals.h:
Fixed boot for hard drive

29 Aug 1996  patv
makefile, globals.h, task.c, floppy.asm, wrpcclk.asm, wratclk.asm,
drivers/makefile, rdpcclk.asm, rdatclk.asm, getvec.asm, boot/makefile,
boot.asm:
Bug fixes for v0.91b

29 May 1996  patv
clock.h, date.h, dcb.h, kbd.h, dirmatch.h, error.h, exe.h, sft.h,
tail.h, time.h, fnode.h, mcb.h, pcb.h, portab.h, process.h,
dosnames.h, fat.h, fcb.h, file.h, device.h, dosfns.c, fatdir.c,
misc.c, fatfs.c, fattab.c, fcbfns.c, chario.c, dosnames.c, syspack.c,
blockio.c, error.c, prf.c, initoem.c, sysclk.c, int2f.asm, config.c,
kernel.asm, inthndlr.c, proto.h, systime.c, apisupt.asm, asmsupt.asm,
nlssupt.asm, procsupt.asm, task.c, globals.h, memmgr.c, dsk.c, main.c,
makefile, execrh.asm, ioctl.c, strings.c:
bug fixes for v0.91a

19 Feb 1996  patv
int2f.asm:
Initial revision.

19 Feb 1996  patv
makefile, kernel.asm, nlssupt.asm, proto.h, globals.h, config.c,
inthndlr.c, task.c, dsk.c, main.c, memmgr.c, strings.c, initoem.c,
ioctl.c, sysclk.c, systime.c, fatdir.c, misc.c, fatfs.c, dosfns.c,
dosnames.c, fattab.c, drivers/makefile, cds.h, dirmatch.h, exe.h,
sft.h, tail.h, time.h, fcb.h, file.h, fnode.h, mcb.h, pcb.h, portab.h,
process.h, clock.h, date.h, dcb.h, device.h, dosnames.h, fat.h,
error.h, kbd.h:
Added NLS, int2f and config.sys processing

01 Sep 1995  patv
wrpcclk.asm, wratclk.asm, rdpcclk.asm, rdatclk.asm, getvec.asm,
floppy.asm, boot.asm, apisupt.asm, asmsupt.asm, proto.h, kernel.asm,
procsupt.asm, execrh.asm, strings.c, task.c, inthndlr.c, memmgr.c,
dsk.c, main.c, sysclk.c, globals.h, initoem.c, ioctl.c, systime.c,
dosfns.c, blockio.c, error.c, misc.c, dosnames.c, fcbfns.c, chario.c,
fattab.c, prf.c, syspack.c, fatfs.c, fatdir.c, time.h, pcb.h,
portab.h, process.h, sft.h, tail.h, fat.h, fcb.h, file.h, fnode.h,
mcb.h, date.h, dcb.h, device.h, dirmatch.h, dosnames.h, clock.h,
error.h, exe.h, kbd.h:
First GPL release.

30 Jul 1995  patv
dsk.c, memmgr.c, proto.h, strings.c, task.c, blockio.c, misc.c, chario.c,
dosnames.c, error.c, fattab.c, fcbfns.c, prf.c, syspack.c, dosfns.c,
fatdir.c, fatfs.c, mcb.h, pcb.h, portab.h, process.h, sft.h, tail.h,
time.h, date.h, dcb.h, device.h, dirmatch.h, dosnames.h, fat.h, fcb.h,
file.h, fnode.h, clock.h:
Eliminated version strings in ipl

30 Jul 1995  patv
error.h, kbd.h, exe.h:
Fixed ipl

30 Jul 1995  patv
boot.asm:
Initialized stack before use.

05 Jul 1995  patv
asmsupt.asm, proto.h:
Initial revision.

02 Jul 1995  patv
boot.asm, time.h, tail.h, process.h, sft.h, portab.h, pcb.h, kbd.h,
mcb.h, fnode.h, file.h, fat.h, fcb.h, exe.h, error.h, dirmatch.h,
dosnames.h, dcb.h, device.h, date.h, clock.h, boot/makefile,
procsupt.asm, kernel.asm, execrh.asm, apisupt.asm, task.c, strings.c,
inthndlr.c, main.c, memmgr.c, dsk.c, sysclk.c, systime.c, ioctl.c,
initoem.c, globals.h, makefile, misc.c, error.c, fcbfns.c, dosnames.c,
chario.c, syspack.c, prf.c, fattab.c, fatfs.c, fatdir.c, dosfns.c,
blockio.c, wrpcclk.asm, wratclk.asm, getvec.asm, rdpcclk.asm,
rdatclk.asm, floppy.asm, drivers/makefile:
Initial revision.

25 May 1993  patv
dirmatch.h:
Initial revision.

