"I've noticed lately that the paranoid fear of computers
               becoming intelligent and taking over the world has almost
               entirely disappeared from the common culture.  Near as I
               can tell, this coincides with the release of MS-DOS."
                                                         -- Larry DeLuca
   DIR DOS Internals
   DIR Strategies and Techniques for Writing State-of-the-art TSRs that Exploit MS-DOS 5
   DIR Undocumented DOS
   DIR Undocumented PC
  TEXT advdos-utf8.txt
  TEXT advdos.txt
RESERV Dr Dobb's - Writing MS-DOS Device Drivers (December 1990).pdf
  TEXT MS-DOS 3.3 Programmer Reference.txt
  TEXT MS-DOS 4.0 Programmer Reference.txt
  TEXT MS-DOS extended error codes.txt
RESERV MSDOS Programmer's Reference (Tandy 2000).pdf
  HTML Programmer's Technical Reference for MS-DOS and the IBM PC.html
  TEXT The PSP structure.txt