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collapseos
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375 Commits

Author SHA1 Message Date
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
Virgil Dupras 177e70580f sms/kbd: begin rewriting ps2ctl to Forth 
So far, the resulting binary matches.
 2020-05-17 14:24:27 -04:00
Virgil Dupras 8c4c879a65 avra: begin implementing forward label system 2020-05-17 11:04:08 -04:00
Virgil Dupras 212126d6d2 avra: add RJMP and RCALL 2020-05-17 10:13:43 -04:00
Virgil Dupras b5d42924ba avra: add arg range checks 2020-05-17 09:30:36 -04:00
Virgil Dupras 5227777b34 avra: add OPb and OPRdb instr classes 2020-05-17 08:57:23 -04:00
Virgil Dupras 2e23b84fc1 avra: simplify OPRdRr 2020-05-16 22:16:41 -04:00
Virgil Dupras 75a1b2d504 avra: add OPAb instr class 2020-05-16 21:59:07 -04:00
Virgil Dupras 322be4d576 avra: add OPNA instr class 2020-05-16 21:44:47 -04:00
Virgil Dupras 0f2d14ad8a z80a: add BREAK, instruction 
This allows us to remove a lot of labels usage in boot code. This
commit has no effect on forth.bin.
 2020-05-16 21:02:50 -04:00
Virgil Dupras fd597d29d2 boot: remove spurious label usage 2020-05-16 19:47:34 -04:00
Virgil Dupras ee3407bf1c avra: first steps 2020-05-16 09:51:02 -04:00
Virgil Dupras 863540f7c6 core: define H@ a bit sooner 2020-05-15 22:59:38 -04:00
Virgil Dupras bd38d80f9c Move Cross-compiled core from B390 to B350 
and renamed it "Core words". Also, reworded the presentation.
 2020-05-15 22:44:49 -04:00
Virgil Dupras f2817870aa sms: working on real hardware! 2020-05-15 21:53:26 -04:00
Virgil Dupras 7ceff6144c sms: implement pad button B ( next class ) 2020-05-15 21:18:32 -04:00
Virgil Dupras b6c039589f Don't emit BS when at beginning of input buffer 2020-05-15 20:51:09 -04:00
Virgil Dupras aad713c477 sms: implement backspace with pad button A 2020-05-15 20:32:04 -04:00
Virgil Dupras fdea069544 sms: implement button C and Start in Pad 2020-05-15 17:46:18 -04:00
Virgil Dupras 852c775b5b sms: implement linefeed in VDP 2020-05-15 16:08:27 -04:00
Virgil Dupras f9a8e6f180 sms: Pad WIP 2020-05-15 15:41:06 -04:00
Virgil Dupras 1597f1e131 Don't generalize XYPOS just yet 
It was ill-advised.
 2020-05-15 14:09:31 -04:00
Virgil Dupras db9885b8cf Rename (find) to FIND 
I hadn't noticed that this word was almost ANS compliant.
 2020-05-15 12:50:14 -04:00
Virgil Dupras 175b4bc497 sms: CollapseOS prompt! 2020-05-15 12:46:25 -04:00
Virgil Dupras ca60685067 Streamline initialization process 
Instead of letting each configuration taking care of RDLN$ and
"CollapseOS" prompt, move this to BOOT to simplify xcomp units.

Initialization source code is now only for driver initialization.
 2020-05-15 11:34:35 -04:00
Virgil Dupras 0163af470a Fix EOT behavior after QUIT 
Previously, calling quit would break EOT behavior and not properly
quit Collapse OS.
 2020-05-15 10:19:39 -04:00
Virgil Dupras 43eabf566b sms: WIP ! 2020-05-14 22:15:31 -04:00
Virgil Dupras 87b51a6261 By default, allocate about 0x100 bytes for PSP+RSP 
During "make updatebootstrap", we use less than 0x20 bytes on the
PSP side and less than 0x40 bytes on the RSP one. 0x100 bytes ought
to be enough for anybody.
 2020-05-14 18:41:09 -04:00
Virgil Dupras bf289b0a67 z80a: de-variable-ize 
Use straight VARIABLE instead of Z80MEM+. Initially, I used this
system to allow z80a to be embedded in a system binary, but now
I don't think it's worth it. Compiled, z80a is 2.5k. Sure, it's a
sizeable amount of RAM, but I think that even with it in RAM, I'll
manage a bootstrap within my most constrained machine, the SMS with
8K.
 2020-05-14 15:29:22 -04:00
Virgil Dupras 3fbae082f4 Remove INTJUMP mechanism 
Not worth the trouble. Easier to set jump in binary directly.
 2020-05-14 15:13:16 -04:00
Virgil Dupras a5269a1c7c Make blk use system RAM 2020-05-14 14:51:20 -04:00
Virgil Dupras eec9549bde Make rdln use system RAM 2020-05-14 14:26:56 -04:00
Virgil Dupras b606dbf9af rc2014: move xcomp unit's contents to blkfs 2020-05-14 12:29:34 -04:00
Virgil Dupras a8e8204eba trs80: adapt recipe to single stage xcomp 2020-05-14 12:08:17 -04:00
Virgil Dupras 8a58449776 Add word ERR 2020-05-14 11:57:26 -04:00
Virgil Dupras e6bac985fa Cross-compiles in a single stage! 
Finally got rid of the XPACKed core and managed to cross-compile
all core words, which greatly simplifies the bootstrapping process.
 2020-05-14 10:17:38 -04:00
Virgil Dupras 68262f925b Almost done De-XPACKing! 2020-05-14 09:58:48 -04:00
Virgil Dupras 640e3321fc Move a bunch of words from XPACKed core to xcomp core 2020-05-14 09:54:33 -04:00
Virgil Dupras 4143e2a699 Improve late-stage xcomp 2020-05-14 09:45:42 -04:00
Virgil Dupras 179c66be8a Move a bunch of words from XPACKed core to xcomp core 2020-05-14 08:50:43 -04:00
Virgil Dupras 74896051bb Move BOOT, (boot<) and INTEPRET to high xcomp 
Saves us an (ok) indirection and will save us more soon.
 2020-05-14 08:45:01 -04:00
Virgil Dupras b17bd4dca0 wip 2020-05-14 08:33:06 -04:00
Virgil Dupras 40a756cf1c Move a bunch of words from XPACKed core to xcomp core 2020-05-14 08:18:53 -04:00
Virgil Dupras 51997533ff Move a bunch of words from XPACKed core to xcomp core 2020-05-14 07:58:55 -04:00
Virgil Dupras 80d730318a Simplify LOAD's INTERPRET exit mechanism 2020-05-13 22:55:52 -04:00
Virgil Dupras 2e9e7047bf Make INTERPRET break on ASCII EOT 
This should allow me to simplify LOAD's exit mechanism on block
end.
 2020-05-13 21:44:46 -04:00
Virgil Dupras 052d59a3a2 TOWORD: tiny optimization 
My mind is getting forthy.
 2020-05-13 20:59:00 -04:00
Virgil Dupras 33d37d4ce9 WORD: don't overwrite RAM on words over 31 chars 
This allows me to reclaim some RAM I hadn't even noticed I
needlessly monopolise.
 2020-05-13 20:39:53 -04:00
Virgil Dupras bd1e76ec5b Gather all RC2014 drivers into a single "RC2014 Recipe section" 2020-05-13 14:56:38 -04:00
Virgil Dupras 9b85961093 Rename "Core words" to "XPACKed core" 
Now that this section is so small, I think I can see a possibility
for cross-compiling Collapse OS entirely, which would be great
because we could get rid of the relinker.
 2020-05-13 14:31:56 -04:00
Virgil Dupras 76037ca1e7 Simplify boot process 
That INIT thing is unnecessary.
 2020-05-13 14:19:54 -04:00
Virgil Dupras bb77cd0759 xcomp: add overrides into a loadable block 
Makes xcomp.fs units shorter.
 2020-05-13 13:33:24 -04:00
Virgil Dupras 0434d02818 xcomp: implement X['] 2020-05-13 13:24:58 -04:00
Virgil Dupras 7c20501f27 Move core's blk to xcomp core (low and high) 
TODO: implement X['] so that I can remove those XCURRENT patterns.
 2020-05-13 10:50:46 -04:00
Virgil Dupras d956386e9b Move core's readln to xcomp core (high) 2020-05-13 09:28:32 -04:00
Virgil Dupras 029df00ad4 Free some space for xcomp core 2020-05-13 09:11:57 -04:00
Virgil Dupras 56af516d07 Move core's fmt to xcomp core (high) 2020-05-13 09:02:44 -04:00
Virgil Dupras e2e9faef2c Move a bunch of words from core to xcomp core 2020-05-13 08:50:07 -04:00
Virgil Dupras d6a3e79394 Free some space for xcomp core low 2020-05-13 08:00:49 -04:00
Virgil Dupras ddf23e3d02 Move a bunch of words from core to xcomp core 2020-05-13 07:55:36 -04:00
Virgil Dupras 6a5ff3adcb rc2014: unify SD Card driver 
Now more low/high layers.
 2020-05-12 21:48:29 -04:00
Virgil Dupras cbf5baf3b6 Pack core words a bit 
This leaves space for xcomp-core which is growing.
 2020-05-12 21:27:06 -04:00
Virgil Dupras dfe474ca0e xcomp: add XCOMPILE and X[COMPILE] 
This allows us to move words like ABORT" to xcomp-core, which is
I think the last roadblock before being able to unify all drivers
into a single xcomp layer.
 2020-05-12 21:08:18 -04:00
Virgil Dupras 44b065ff99 ti84: unify drivers 
No more low/high
 2020-05-12 12:41:47 -04:00