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collapseos
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438 Commits

Author SHA1 Message Date
Virgil Dupras 5052efb60f VE: supress ed's output on E and X 
Most of the time, this output would be hidden by the next screen
update, except when editing the last line.
 2020-06-28 07:04:08 -04:00
Virgil Dupras 101193a78c avra: begin writing docs 2020-06-28 06:57:59 -04:00
Virgil Dupras 440ea43a88 z80a: make mnemonic names more uniform across assemblers 
Initially, I used the same letters as those used in the z80 ref
docs, but it makes the different assemblers harder to use than they
should. Having consistent "argtype" rules across assemblers should
help.
 2020-06-27 22:01:56 -04:00
Virgil Dupras 1312817117 z80: make boot binary a 2-part process 
Previously, recipes that began spitting binary contents before
loading block 282 would end up with VARIABLE code in their binary,
thus breaking them. We fix this by making this loading process
2-part.
 2020-06-26 21:41:17 -04:00
Virgil Dupras 891e4f861a z80: fix chkPS's "stable ABI" form in binaries with offset 
Before lblnext is set, we need to use BJP, instead of JPnn, for the
jump to work in binaries with offsets.
 2020-06-26 21:24:12 -04:00
Virgil Dupras 7eeec67ff5 Add extra words WIPED? and FREEBLKS? 2020-06-23 07:21:33 -04:00
Virgil Dupras 9ab5cda397 ed: rename I to i 
Shadowing core "I" is too messy. As soon as ed is loaded in memory,
nothing else that isn't "i-aware" can be loaded anymore.

I guess that's why "contexts" exist in Starting Forth, but adding
this concept just for allowing the shadowing of core words seems
overkill to me. Renaming I to i in ed seems better.
 2020-06-23 07:08:21 -04:00
Virgil Dupras af339d8c6a VE: properly make buffer dirty on E and X 2020-06-23 06:53:30 -04:00
Virgil Dupras 2d9a07d215 blkunpack: don't include trailing empty lines 
This was becoming heavy to manage.
 2020-06-23 06:52:34 -04:00
Virgil Dupras 94ed01086a pcat: move drivers and xcomp to blkfs 2020-06-22 14:21:25 -04:00
Virgil Dupras 1bea45acb8 8086a: add PUSHs, and POPs, 2020-06-22 13:54:33 -04:00
Virgil Dupras d7f002df98 pcat: use boot drive no passed to bootloader through DL 
instead of hardcoded drive 0.
 2020-06-21 22:53:11 -04:00
Virgil Dupras dc7f36263a pcat: BLK-enabled! 
That INT 13H logic was a bit tricky to implement...

read-only for now.
 2020-06-21 22:07:12 -04:00
Virgil Dupras 8d645405b3 pcat: add RSP checks in next 2020-06-21 15:14:38 -04:00
Virgil Dupras f9eb7c661b 8086asm: fix CMPrr, and CMPxx, argument order 2020-06-21 14:55:14 -04:00
Virgil Dupras cd514e6cd6 pcat: add PSP checks in all native words 
Also, fix (roll) which wasn't properly implemented.
 2020-06-21 14:07:02 -04:00
Virgil Dupras c2c32bbed8 pcat: properly handle IMMED flag in _find 2020-06-21 13:09:51 -04:00
Virgil Dupras 1b5333d0b4 pcat: move all find code in _find word 
It isn't used by low level boot code anymore, so it can go there.
 2020-06-21 11:57:12 -04:00
Virgil Dupras dbd283758c Refer to BOOT and (uflw) by addr in stable ABI 
Was previously referred to by name+find, which was wasteful.
 2020-06-21 11:41:10 -04:00
Virgil Dupras dcaa515929 pcat: implement does 2020-06-21 10:40:09 -04:00
link2xt d83d12899b
MOVE: do not crash when u is 0 (#126) 
This commit adds ?DUP IF guards to MOVE and MOVE- that make them exit
when u is 0. Without these guards a DO loop was executed 65535 times
instead of 0.

In particular, this fixes a crash when "105 LOAD I " is executed
immediately after boot. Block editor word "I" passes IBUF length (0)
to MOVE- and MOVE in this case, causing a crash.
 2020-06-21 05:49:45 -05:00
Virgil Dupras 99c05fff3c pcat: it works! 
Forth intepreter now works! There's still DOES> and overflow checks
to implement, but otherwise, we have it!
 2020-06-20 20:06:42 -04:00
Virgil Dupras ae719508d9 pcat: make /MOD division 16-bit 
Was required for the many "256 /MOD" in the code.
 2020-06-20 19:14:51 -04:00
Virgil Dupras 60ecab314e pcat: we have PROMPT! 
Not working, but we do get that sweet "CollapseOS".
 2020-06-20 16:58:48 -04:00
Virgil Dupras 397ee3e3e6 Simplify word ' 2020-06-20 14:13:41 -04:00
Virgil Dupras 1536434666 pcat: implement cell execution and shaping things up 2020-06-20 13:50:01 -04:00
Virgil Dupras acf8e03f53 8086asm: add overflow check to RPCs, 
I've spent way too much time debugging bugs caused by this...

*sigh*, why can't I learn?
 2020-06-20 13:36:21 -04:00
Virgil Dupras 019fd8a67d pcat: fix ?DUP 2020-06-20 07:34:46 -04:00
Virgil Dupras 9d2afd200c pcat: implement (s) 2020-06-19 20:09:51 -04:00
Virgil Dupras 723d3c4249 pcat: all native words implemented! 
(well, not PC@ and PC!, but I'm not even sure what would be the role
of these in a PC/AT. they're only used in drivers on the z80 front,
so they will not be immediately needed. todo... )

Now comes the fitting part.
 2020-06-19 08:10:51 -04:00
Virgil Dupras 8cc8df0446 pcat: add native _find 2020-06-19 07:56:54 -04:00
Virgil Dupras 5ebdf84e78 pcat: more native words 
almost there!
 2020-06-19 07:26:33 -04:00
Virgil Dupras 89bc7df120 pcat: more native words 2020-06-18 23:10:14 -04:00
Virgil Dupras 3b21ba635d pcat: add PICK and (roll) 2020-06-18 21:21:46 -04:00
Virgil Dupras 6b07296d30 pcat: more native words 2020-06-18 19:06:53 -04:00
Virgil Dupras bd508daad9 pcat: begin organizing native words properly 
This port is taking shape!
 2020-06-18 15:28:30 -04:00
Virgil Dupras 6bc1738bfd pcat: implement (loop) 
8086 asm is a lot terser than z80... Those indirect memory operations
are very handy.
 2020-06-18 15:01:04 -04:00
Virgil Dupras aca9bc9058 z80: small optimization in cell execution 2020-06-18 08:02:45 -04:00
Virgil Dupras 035532acf7 z80: remove remaining indirections in execute calls 
We now have a stable ABI that is pretty cleared up...
 2020-06-18 07:50:20 -04:00
Virgil Dupras 42818d25be z80: remove layers of indirection of find calls 2020-06-18 07:40:20 -04:00
Virgil Dupras 76e698157c z80: remove layer of indirection in most "next" calls 
The only calls still using the stable ABI indirection are those
made before the next routine is created.
 2020-06-18 07:24:47 -04:00
Virgil Dupras eba83fa9a9 z80: use named labels for boot routines 
The usage of numerotated labels for this was becoming severly
confusing.
 2020-06-18 07:16:40 -04:00
Virgil Dupras eed817b517 pcat: adapt to word type change 2020-06-18 06:50:32 -04:00
Virgil Dupras 3d2dc041fb Make word routines into word types 
Instead of having wordref point to core word routines, I made them
into word 4 word types. It liberates space into the stable ABI and
should make porting to other arches easier.

I'm also thinking of combining word type with the namelen field
for precious bytes saving, but not now...
 2020-06-17 21:41:01 -04:00
Virgil Dupras 3383a00040 Fix recipes with binary offset (ti84, trs80) 
I broke them when I removed call indirection layers without also
removing usage of BCALL.
 2020-06-17 17:44:33 -04:00
Virgil Dupras 1d468d2168 Fix mis-documentation about literal words 2020-06-17 16:31:08 -04:00
Virgil Dupras 2be2f74a43 Make literal word routines into regular native words 2020-06-17 14:25:32 -04:00
Virgil Dupras ea9833d4ff Remove LITA 
It was useful when we still had the relinker, but now it has no use.
I was waiting a bit to see if the distinction would be useful again,
but it seems like it won't.
 2020-06-17 13:50:42 -04:00
Virgil Dupras abb4dc8bd7 Reduce the scope of the stable ABI 
Only 2>R in actually needed in the RSP family (for LOOP). Reducing
the scope of the stable ABI makes porting to other arches easier.
 2020-06-17 07:54:43 -04:00
Virgil Dupras bc8144b4be pcat: implement (br) and (br?) 2020-06-16 22:10:32 -04:00
Virgil Dupras 49979404a5 pcat: implement number literals 2020-06-16 21:34:35 -04:00
Virgil Dupras a92864a595 pcat: implement RSP mechanism in execution model 2020-06-16 20:41:53 -04:00
link2xt 472331b450
Check spelling (#121) 2020-06-16 18:57:31 -05:00
link2xt 6a09910dfc
BROWSE: ignore invalid digits (#123) 
Documentation in block 100 says a number followed by a space or return
lists the contents of the block. However, typing any other character
does this too, because _pdacc returns -1 in this case.

This is annoying because typing "n" instead of "N" immediately after
jumping to some block was bringing you to block 0. Now "n" is ignored
instead.

This commit changes the condition for printing to explicitly check for
the value of 1, which means whitespace according to _pdacc documentation
in block 355.
 2020-06-16 18:55:26 -05:00
link2xt f1a225ef3d
Fix unreadable sentence in block 031. (#122) 
This clearly has some words missing.
 2020-06-16 18:28:06 -05:00
Virgil Dupras 16d6a0b377 pcat: begin implementing compiledWord/next 2020-06-16 19:05:36 -04:00
Virgil Dupras feeedcc55c z80: small optimization in execute 
I had more ambitious goals, but I backed out of it: not worth it.
This small optimization is an easy picking though.
 2020-06-16 16:37:21 -04:00
Virgil Dupras dabbd6c253 8086asm: add support for modrm 8-bit displacement 2020-06-15 06:52:47 -04:00
Virgil Dupras d8d2e05eb2 pcat: make find compare strings 
find is the biggest chunk of logic of the boot code. The 8086 version
is significantly terser than the z80 one. REP/CMPS helps...
 2020-06-15 06:23:19 -04:00
Virgil Dupras 8c452f5add pcat: begin implementing find 
Not comparing strings yet. Without asm tooling support, it's a big
chunk to swallow at once. It's progressing well!
 2020-06-14 21:52:58 -04:00
Virgil Dupras 3be30e24bb pcat: implement execute and nativeWord 2020-06-14 15:27:26 -04:00
Virgil Dupras bf0e999f8e pcat: read LATEST and jump to it 2020-06-14 14:51:32 -04:00
Virgil Dupras a72322df31 pcat: begin structuring around words 2020-06-14 14:15:44 -04:00
Virgil Dupras 85a0b87da3 z80: reorder compiledWord and doesWord, saving ourselves a jump 2020-06-14 10:12:56 -04:00
Virgil Dupras 38d5a9f303 z80: inline cellWord in stable ABI 2020-06-14 10:07:46 -04:00
Virgil Dupras 40f92b9bab z80: optimize chkPS 
Inline it in next and make chkPS, call a newly reserved label for
it directly, removing a layer of indirection. This frees a spot in
the stable ABI.
 2020-06-14 09:48:10 -04:00
Virgil Dupras 31095bc04d z80: remove call indirections in tight spots 2020-06-14 09:29:34 -04:00
Virgil Dupras 2b7abf802f pcat: begin porting forth 
I'm not sure yet where I'm going, but I'm not going to build the
8086 port from the ground up like I did with the z80, that is,
making is sustain itself and eventually merge its forth code with
core words. That would be too much work which would then be thrown
out (all those words I'll initially have to implement in asm which
are already implemented in Forth).

What I *think* I can do is build a mirror version of z80 boot code
and cross-compile it from the z80. This means it has to follow z80
stable ABI.

Nope, I'm not sure where I'm going...
 2020-06-13 21:37:54 -04:00
Virgil Dupras 1a467efae1 pcat: use a far jump to boot into the OS 
Unless I misunderstood, this is supposed to set CS. This would make
all SREG have the same value. This allows us to remove BIN( offset
from os.bin.

I've tried booting to offset 0, but it didn't seem to work. Let's
settle for 0x8000. 512kb of system RAM is way more than we need
anyways.
 2020-06-13 20:06:51 -04:00
Virgil Dupras 507c2c12e7 8086asm: clarify operands and fix stupidities 2020-06-13 17:58:42 -04:00
Virgil Dupras 5033f17be2 8086asm: tidy up a bit 2020-06-13 16:21:56 -04:00
Virgil Dupras 07e50313c7 pcat: separate MBR code and OS code 
MBR code now strictly loads OS code into memory and jumps into it.

Now, I've got to consolidate my assembler code, modrm logic is
messed up.
 2020-06-13 15:35:16 -04:00
Virgil Dupras e17f2e6907 pcat: read sector from floppy 2020-06-13 13:29:04 -04:00
Virgil Dupras b037c86598 recipes/pcat: now tested on real hardware! 2020-06-13 11:47:32 -04:00
Virgil Dupras 66b27b0790 8086asm: properly initialize DS and DF 2020-06-12 19:07:23 -04:00
Virgil Dupras 177750c928 recipes/pcat: first steps into 8086! 2020-06-12 14:03:31 -04:00
Virgil Dupras 4e18fafe46 8086asm: now enough tooling to assemble a PC/AT Hello World boot 2020-06-12 13:12:41 -04:00
Virgil Dupras 210b833c71 8086asm: begin adding MODRM-enabled ops 2020-06-12 12:07:48 -04:00
Virgil Dupras 749fdf1b18 8086asm: add 8-bit JMP, MOVrI, INT, 
Verified against nasm with equivalent code.
 2020-06-12 11:29:00 -04:00
Virgil Dupras 405444d630 8086asm: first steps 2020-06-12 10:49:27 -04:00
Virgil Dupras 1871c46614 VE: add backspace support in replace mode 2020-06-11 22:29:05 -04:00
Virgil Dupras dc368597a6 VE: Add dirtiness indicator in status bar 
Written from VE!
 2020-06-11 21:52:08 -04:00
Virgil Dupras 838c88459b Make BLK@ FLUSH only if loading a different block 
Otherwise, when editing a file with VE, we would constantly write
to disk, which is a bit inefficient.
 2020-06-11 21:42:52 -04:00
Virgil Dupras e317e9cc78 VE: use system input buffer for IBUF and FBUF typing 
This gives us backspace handling. Also, remove all usages of C<
which allows us to remove the C<* override.
 2020-06-11 20:45:46 -04:00
Virgil Dupras 4146110e0d Move EMPTY to core words 
It's a quite useful word and it doesn't make sense to reload it from
disk after each usage.
 2020-06-11 19:04:03 -04:00
Virgil Dupras f6ded7712e VE: add 't' 
This is the first commit I do entirely in VE. It's a habit I'm planning
on taking as it helps a lot to find usability issues.
 2020-06-11 18:12:01 -04:00
Virgil Dupras e83d5073ba VE: disallow buffer overflow during typing 
When reaching the end of the buffer when typing in IBUF or FBUF, stop
typing instead of overflowing.
 2020-06-11 14:48:18 -04:00
Virgil Dupras bd7da4658b VE: add gutter 2020-06-11 12:01:22 -04:00
Virgil Dupras a405f77185 ed: don't crash when inserting in 64th char of the line 2020-06-10 20:56:19 -04:00
Virgil Dupras 7cad9ffe40 LIST: simplify logic 
There wasn't much of a reason to leave a loop early on 0x0d or null.
The idea was that once you have a CR or null, the rest is garbage
and you shouldn't see it.

However, it brought a problem: In VE, you couldn't insert characters
past that limit. It would be written, but never displayed. So let's
get rid of this logic and simply always display a 64x16 grid.
 2020-06-10 19:00:03 -04:00
Virgil Dupras bc951a5ff1 ed and VE: add command Y 2020-06-10 17:27:14 -04:00
Virgil Dupras 8f0e51a21c VE: make D copy first deleted line to IBUF 2020-06-10 16:59:12 -04:00
Virgil Dupras 6a6c59300e VE: make ACC reset after each non-digit keystrokes 
It simplifies things. Also, removed ';' which became useless.
 2020-06-10 16:54:36 -04:00
Virgil Dupras c16c5c98ce Improve usage docs 2020-06-09 22:55:42 -04:00
Virgil Dupras 1adfd0c1a6 ed: make X and E cut to IBUF 
This allows cut&paste similar to VI's
 2020-06-09 22:09:15 -04:00
Virgil Dupras f90e03b0cb ed: free some blocks for the docs 2020-06-09 21:48:49 -04:00
Virgil Dupras 64ce8ab3e9 ed: Improve F with repeated searches 
Make F search from curpos+1 so that it's possible to search the
same word we've just found a second time. Previously, it would find
the word under the cursor.

Also, improve docs a bit.
 2020-06-09 21:17:08 -04:00
Virgil Dupras 4d893d90fc VE: Improve I and F buffer typing 
Previously, it would keep the old buffer displayed why typing over
it. I had kept it thus because I didn't want to erase the buffer
right away because the behavior is that when we type nothing, we
keep the buffer as-is and repeat the action.

Now, the behavior of I and F is much better. It keeps the buffer
displayed until the first non-return keystroke and then erases it.

Also, fixed PSP leak in _type and fixed PSP overuse in successful
_F (they balanced out).
 2020-06-08 21:23:23 -04:00
Virgil Dupras a36db99651 VE: properly initialize variables 
This fixes weird glitches I had on trs80. It's *always* a matter of
RAM initialization. By now, I should know...
 2020-06-07 16:16:07 -04:00
Virgil Dupras b2b556911f trs80: implement AT-XY 
Also, I've run VE on the TRS-80 for the first time! It doesn't work
well though. Screen is mostly blank all the time.

I removed instructions from the recipe which became obsolete when
Collapse OS became 100% bootstrapped. Also, I've updated instructions
to change the NL override which is necessary for blkup to work.
 2020-06-07 11:14:57 -04:00
Virgil Dupras ab76d8d648 VE: add 'D' 2020-06-07 09:30:31 -04:00
Virgil Dupras 15acf30ca3 VE: add 'o' and 'O' 2020-06-07 07:25:02 -04:00
Virgil Dupras c6016cd429 VE: fix buffer overflow with 'f' and make 'H' and 'L' affect 'f' 2020-06-06 21:59:22 -04:00
Virgil Dupras b22ab8437b VE: add command 'f' 
Kinda proud of this one. Efficiently piggy-backing on the Block
Editor, keeping things simple, and yet, building power into the
editor.
 2020-06-06 21:46:46 -04:00
Virgil Dupras 204a66277e VE: replace 'W' with 'b' and implement 'W' and 'B' 
Which are end-of-word movements.
 2020-06-06 21:01:35 -04:00
Virgil Dupras 9d4e9ef08d VE: Add X 2020-06-05 14:01:39 -04:00
Virgil Dupras 6212a08866 VE: Add F and E 2020-06-05 13:54:45 -04:00
Virgil Dupras a1b99275e6 VE: Add replace mode 2020-06-05 11:01:26 -04:00
Virgil Dupras e7a6c777c7 VE: refactor mode indicators 
The indicator is going to be empty most of the time and will be
emitted by the mode changer directly. That's going to the upper-right
corner and the status bar avoids emitting in that area.
 2020-06-05 10:38:05 -04:00
Virgil Dupras 4af93d53e3 VE: add I command 
Also, add insert and find buffers to the header, making it 3 lines
high.

Also, fix the "I" overshadowing word which wasn't operating on the
proper RSP level.

Also, fix I which didn't mark the block as dirty.
 2020-06-04 22:54:27 -04:00
Virgil Dupras e36080d7b8 VE: load Block Editor and reuse some of its words 2020-06-04 20:20:35 -04:00
Virgil Dupras 297c187426 VE: add mode indicator in status bar 2020-06-04 20:07:02 -04:00
Virgil Dupras 2bf4db59ed VE: Add H and L 
Also, add MODE indirection.
 2020-06-04 19:20:40 -04:00
Virgil Dupras 878df2d53b VE: make w affected by modifier 2020-06-04 18:59:54 -04:00
Virgil Dupras 98e820cf51 WE: why case-insensitive again? 2020-06-04 18:52:59 -04:00
Virgil Dupras 11843cc613 VE: add W and S movements 2020-06-04 17:22:07 -04:00
Virgil Dupras 77aedd7338 VE: add H, J, K, L 2020-06-04 12:04:13 -04:00
Virgil Dupras c07a594e1a Begin working on a Visual Editor 2020-06-04 10:39:59 -04:00
Virgil Dupras f53f91558b find: don't protect BC 
not needed
 2020-06-03 20:57:29 -04:00
Virgil Dupras c26c454cbf extra words: allow finer-grained loading 2020-06-03 20:28:18 -04:00
Virgil Dupras d8a6456206 (parsed): fix crash on parsing non-decimal staring with '-' 
The address returned in the error condition would be off by one.
 2020-05-25 21:15:07 -04:00
Virgil Dupras 2d17b4e8ec Make string length-prefixed instead of null-terminated 
I'm not sure why I chose null-terminated initially. Probably because
the z80asm version had null-terminated strings.

Length-prefixes strings are the traditional form of strings in Forth
and it's a bit easier to work with them with traditional forth words
when they're under this form.
 2020-05-25 20:34:52 -04:00
Virgil Dupras 6a507bcaac Add word MOVE, 2020-05-24 19:55:00 -04:00
Virgil Dupras 2d2a846b25 Inline SCPY 
I'm planning a string reform and it's standing in the way.
 2020-05-24 14:19:25 -04:00
Virgil Dupras a59322c252 Remove XPACK 
Now that everything is cross-compiled, no need to XPACK. If we ever
need it again, we know where to find it.
 2020-05-24 13:45:22 -04:00
Virgil Dupras 4c1cacd8d0 Remove Linker 
Now that the boot binary is fully cross-compiled, there's no use for
the linker anymore. Theoretically, it could still be useful, but I
can't think of a real use case.

Let's take it out of the picture. If it's ever needed again, I'll
know where to find it.
 2020-05-24 10:22:56 -04:00
Virgil Dupras ed2b91411a Limit ourselves to 8-bit branching 
I'm planning on going back to 8-bit branching. 16-bit br cells incur
a non-negligible penalty and, while at first 64 words (128 bytes
forward or backward) seemed a bit limiting, I now don't see why one
would ever construct such a big branch. It would be un-forthy.

Also, I looked at using BC instead of IY to hold IP and the transition
would be a lot easier with 8-bit branching.

In this commit, all I do is add overflow checks in IF. The mechanic
below doesn't change. I'll give myself some time to think it over so
that I avoid yet another back and forth.
 2020-05-24 10:16:25 -04:00
Virgil Dupras 5bbc256faf Flush input buffer on QUIT 
Prebiously, when encountering an error during a : ; definition from
input buffer, because the input buffer wasn't flushed, we would continue
interpreting and quit the whole program when encountering ;.
 2020-05-24 09:23:19 -04:00
Virgil Dupras d041b91846 Optimize chkPS 
Use EXX instead of the stack for HL protection and remove all
spurious uses of chkPS,

I wanted to inline chkPS in next because of its "tight loop" status,
but for reasons I don't understand, doing so breaks Collapse OS.
Later...
 2020-05-22 23:12:03 -04:00
Virgil Dupras 4f2c2ab80a z80a: add a few ops 2020-05-22 22:23:24 -04:00
Virgil Dupras 581c6d015c Fix blk overflow in usage guide index 2020-05-22 20:39:28 -04:00
Virgil Dupras 6bff03a48b Move adev to core 
It's small enough to be worth it.
 2020-05-22 14:50:34 -04:00
Virgil Dupras bb190f9665 Add word TUCK 2020-05-22 14:19:02 -04:00
Virgil Dupras 41d439376d Add word NIP 2020-05-22 14:19:02 -04:00
Virgil Dupras f75b1c8864 Add word ?DUP 2020-05-22 14:19:02 -04:00
Virgil Dupras ae87e88c52 Add 5x7 font 
Also, fix PSP leak in font compilers.
 2020-05-22 08:06:55 -04:00
Virgil Dupras 0939241db1 Add bootstrap guide 2020-05-21 15:25:12 -04:00
Virgil Dupras e9e3bd80f6 ps2: fix PS2_SHIFT check 2020-05-21 08:53:36 -04:00
Virgil Dupras 7d28637740 ps2: add shift support 2020-05-20 20:31:56 -04:00
Virgil Dupras b874a1c175 ps2: wip 2020-05-20 18:56:18 -04:00
Virgil Dupras c86d8a74a0 sms/kbd: PS/2 driver WIP 2020-05-19 21:18:44 -04:00
Virgil Dupras aad6b5c2e5 avra: add global constants 2020-05-19 10:48:48 -04:00
Virgil Dupras ac309bbd9e avra: rename AGAIN, to AGAIN?, 
AGAIN, becomes a shortcut for "' RJMP AGAIN?,"
 2020-05-19 10:36:07 -04:00
Virgil Dupras 7a41c5c6f9 avra: add IF, .. THEN, 
I decided to keep SKIP, .. TO, (renamed from AT,) around and limit
IF, .. THEN, to the simple BRNE case.
 2020-05-19 10:26:57 -04:00
Virgil Dupras 8bbd29d37d avra: add SKIP, .. AT, 
Will change to IF, .. THEN, but I need a way to easily reverse a
BR op. But from this commit, the translation of sms/kbd/ps2ctl.asm
is complete! perfect binary match!
 2020-05-19 10:19:37 -04:00
Virgil Dupras 8ca85abfbd avra: add BEGIN, .. AGAIN, 2020-05-19 07:39:34 -04:00
Virgil Dupras 7b7e60ed4a avra: implement LD/ST 
Still making great progress on sms/kbd/ps2ctl. Still matching ref
binary.
 2020-05-18 22:28:58 -04:00
Virgil Dupras e0bc14e55c avra: implement BR* 
Getting good! still advancing on ps2ctl in sms/kbd and still
matching reference binary.
 2020-05-18 20:34:06 -04:00
Virgil Dupras cdddfdefae avra: add a layer of indirection to FLBL! 
This will make it easier to fit BR* in there.
 2020-05-18 19:45:30 -04:00
Virgil Dupras 63dec372ce sms/kbd: continue advancing on ps2ctl rewrite 
Still binary matching. Next step is branching support.
 2020-05-17 21:10:02 -04:00