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00:38:41 <veltas> mark4: (int16_t)0xFFFF is (as a signed value) -1, a negative value is converted to unsigned by taking it away from 1+MAX i.e. becomes 0xFFFFFFFF. Converting to larger signed it retains its signed value i.e. -1
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00:38:59 <veltas> So if you want to not have weird stuff cast to uint16_t first
00:39:29 <veltas> In C really every use of signed numbers should be justified, there are many caveats and complications
00:41:11 <iv4nshm4k-v> In C, when an integer argument shorter than int is passed, it gets promoted to int automatically.  So printf (..., (int16_t)x) ends up being the same as printf (..., (int)x).
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01:31:26 <cbridge_> <neuro`> Is REFILL meant to read one line into TIB every time it's called?
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01:49:21 <cbridge_> <veltas> Yes
01:50:00 <cbridge_> <veltas> And it's worth pointing out most words don't use REFILL, if they parse something it needs to be on the same line
01:50:17 <cbridge_> <veltas> If a word uses REFILL it should really be documented
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04:24:11 <cbridge_> <KipIngram> Yeah; the way I've always done it is INTERPRET just goes until it parses and executes NULL from the input buffer.  I usually make TIB 256 bytes, but LOAD will use a block buffer instead, which is 4096 bytes.  I've arranged for both to always have null termination, so that I get that NULL at the end.
04:25:28 <cbridge_> <KipIngram> I use QUERY (which uses EXPECT) to refill TIB.
04:30:53 <cbridge_> <KipIngram> Eventually I'll integrate a command history functionality into Query - I had that on my last one but haven't done it yet on this one.
04:32:41 <cbridge_> <KipIngram> Last time I had a fixed size buffer for that, but this time I think I want to let prior command lines accrue on disk, so the history will just grow until I reset it.  I've found command history to be one of bash's nicest features - I use it in conjunction with ctrl-r  history lookup all the time to "accelerate" work.
04:35:52 <cbridge_> <neuro`> Unrelated, but I find myself thinking about an ability to inline any word definition (either as marking that definition as inline, or only when compiling that word in), and also ability to compile to a code-only dictionry (and produce an executable file from that).
04:40:47 <cbridge_> <veltas> I think the best way to do inlining in a very simple forth is just using POSTPONE or whatever equivalent in the word and make it IMMEDIATE
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09:54:03 <cbridge_> <KipIngram> Hey, calculator guys.  I've had my TI-84 sitting here for a while, and a month or two ago I downloaded the Forth app we discussed here.  It looks like it runs "as an app" on the calculator so to speak.  Has anyone looked into just completely replacing the calculator firmware with a Forth based OS?  One that does the whole job of running the calculator?  That's kind of what I interested in.
09:54:28 <cbridge_> <KipIngram> It would provide the primary keystroke processing and so forth, and have algorithms for the various functions, etc. etc.
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10:03:30 <cbridge_> <MrMobius> KipIngram, is that the one siraben made? I thought that replaced everything
10:03:37 <cbridge_> <siraben> KipIngram: yes I have
10:03:45 <cbridge_> <siraben> https://github.com/siraben/zkeme80
10:04:07 <cbridge_> <siraben> however I never did complete the shell
10:04:10 <cbridge_> <siraben> it boots, runs tests and has a simple menu at the home screen
10:04:37 <cbridge_> <MrMobius> KipIngram, i was thinking this week about converting the HP-42 firmware to run on a TI-83
10:05:07 <cbridge_> <MrMobius> i wont live to be 200 years old though so you could tackle that one since ill never have enough time :) 
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10:10:40 <cbridge_> <MrMobius> (not that it would take you that long, i just have other stuff i wanna try to do first)
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10:33:25 <cbridge_> <MrMobius> siraben, how do you get the really basic stuff like writing characters or reading buttons?
10:36:53 <cbridge_> <MrMobius> without the ROM in place
10:37:18 <cbridge_> <KipIngram> Oh, you've got the HP-42 firmware?
10:37:30 <cbridge_> <KipIngram> You mean the 42S, or was there also a 42?
10:37:33 <cbridge_> <KipIngram> I had a 42S for a while.
10:37:57 <cbridge_> <KipIngram> I regarded it as a more powerful calculator than my 41 CV, but I "enjoyed" my 41 CV more.
10:38:04 <cbridge_> <siraben> MrMobius: I can link to the asm source
10:38:27 <cbridge_> <siraben> It's just interrupts
10:38:48 <cbridge_> <siraben> or poll loops
10:38:51 <cbridge_> <siraben> https://github.com/siraben/zkeme80/blob/master/src/keyboard.scm
10:39:06 <cbridge_> <siraben> warning: mix of lisp and asm lol
10:39:58 <cbridge_> <siraben> display routines: https://github.com/siraben/zkeme80/blob/master/src/display.scm
10:44:12 <cbridge_> <siraben> The project is in maintenance mode". I still build it almost monthly to check everything still works, but I haven't written Z80 asm like I did two years ago
11:09:23 <cbridge_> <MrMobius> siraben, right i just meant what was your strategy. i was wondering myself how to figure it out in a kosher way without copy and pasting any of the ROM
11:09:28 <cbridge_> <MrMobius> KipIngram, only 42S
11:10:03 <cbridge_> <siraben> MrMobius: what do you mean without copy pasting any of the ROM?
11:10:16 <cbridge_> <siraben> this completely overwrites the flash chip with my OS
11:10:42 <cbridge_> <siraben> there might be microcode in other modules but I wouldn't know about it, the calculator's boot process is dependent on flash contents
11:10:42 <cbridge_> <MrMobius> siraben, if your firmware completely replaces the ROM, you cant jump into the ROM to read keys or write to the screen, so you have to figure out how to do it in your own code. how did you figure that out?
11:11:12 <cbridge_> <siraben> MrMobius: yeah, you have to send raw bytes to the I/O ports
11:11:22 <cbridge_> <siraben> I copied it from other open source projects:
11:11:36 <cbridge_> <MrMobius> KipIngram, good point. i dont have the 42S ROM and I dont think it's online though I havent looked hard since I dont think im allowed to have it. the 48 ROM and a bunch of others are freeware now but HP didnt release the 42 ROM afaik
11:11:44 <cbridge_> <siraben> https://www.ticalc.org/archives/files/fileinfo/442/44227.html (an OS that boots to a smiley face)
11:11:47 <cbridge_> <MrMobius> siraben, gotcha
11:12:00 <cbridge_> <siraben> and some numerical routines from https://github.com/KnightOS/kernel
11:12:36 <cbridge_> <MrMobius> KipIngram, there are instructions for having your 42 beam out its own rom to a 48 if you still have the 42
11:13:11 <cbridge_> <siraben> that being said, TI-OS is OK in places but garbage in others
11:13:30 <cbridge_> <siraben> e.g. their BASIC dialect is comically slow and inexpressive
11:15:35 <cbridge_> <MrMobius> interesting
11:15:58 <cbridge_> <MrMobius> ive wondered about how i would make my own BASIC for my calculator using a 6502
11:16:14 <cbridge_> <MrMobius> i think you could do some small amount of opitmizing and speed things up some
11:16:28 <cbridge_> <MrMobius> apparently the 68k TI calcs do some smart things
11:16:53 <cbridge_> <siraben> yeah, I don't know if/when I'll need another scientific calculator other than the 84
11:17:01 <cbridge_> <siraben> fun times while I had it
11:18:10 <cbridge_> <KipIngram> Oh, I loved my 41CV.  Fun times indeed.  It's really where I first learned to program.
11:19:13 <cbridge_> <KipIngram> So it's no wonder Forth appealed to me immediately - being as steeped in RPN as I was.
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18:00:09 <mark4> if someone called creel comes in here tell him to private message me, he is a australian youtuber
18:00:19 <mark4> and i think his clock is upside down :)
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20:38:06 <cp-> uhmmm
20:41:54 <Vaelatern> Why is this channel still on abusenode?
20:45:50 <cp-> moving to libera
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