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67 Commits

Author SHA1 Message Date
Virgil Dupras
ecca70c7f3 Add layer of indirection to EMIT 
This would allow things like temporary giving control to the *CL
line on the TRS-80. For example... A very far fetched example. Not
at all the only *raison d'etre* of the layer...
 2020-05-01 20:05:15 -04:00
Virgil Dupras
5bf3baff05 editor: add edit buffer 
Also, add word "C!+" and fix PSP leak in FILL.
 2020-05-01 13:17:40 -04:00
Virgil Dupras
792c781614 editor: add cursor pos tracking and display 2020-04-30 20:42:07 -04:00
Virgil Dupras
07f807edee recipes/trs80: making progress on floppy drivers 2020-04-30 16:10:35 -04:00
Virgil Dupras
65f359bda4 recipes/trs80: can write compiled version to floppy 2020-04-30 11:13:25 -04:00
Virgil Dupras
f38de1c151 Introduce the notion of Extra words 2020-04-29 21:52:18 -04:00
Virgil Dupras
0044011f06 Move AT28 and TRS80 drivers to higher blocknos 
I'm reserving the 100-200 range for non-bootstrapping needs.
 2020-04-29 21:04:10 -04:00
Virgil Dupras
0cf26547ff Add words FLUSH and COPY 2020-04-29 20:21:18 -04:00
Virgil Dupras
1b2c4b519e icore: add BIN+ 
This allows us to write LATEST at proper offset in emul/stage1.fs in
cases where we set a nonzero BIN(.
 2020-04-29 11:42:09 -04:00
Virgil Dupras
fc67b88720 Make BIN( offsetted binaries closer to working at all 
I have a working offset-by-0x100 stage0 now.
 2020-04-28 21:12:52 -04:00
Virgil Dupras
0b8c8c9ca0 recipes/trs80: still wip... 2020-04-28 10:12:16 -04:00
Virgil Dupras
61b2e02351 xcomp: remove XOFF and use ORG and BIN( instead 2020-04-28 09:37:00 -04:00
Virgil Dupras
838548843e boot: apply BIN( to stray stable ABI references 
With cross compiling and IMMEDIATE words, things get icky with stable
ABI references. For the same reason that EXIT, (br) and (br?) need to
stay at stable offsets, these word references will not have BIN(
properly applied at Inner core xcomp.

The solution for now is to adjust during EXECUTE, which is ugly and
inefficient, but I don't see a better solution right now.
 2020-04-28 08:52:47 -04:00
Virgil Dupras
4501313410 Add [IF] .. [THEN] 
Will be useful as kinds of "#ifdef"s during xcomp.
 2020-04-28 08:28:59 -04:00
Virgil Dupras
f97df4614e recipes/trs80: wip 2020-04-28 07:51:41 -04:00
Virgil Dupras
b8ea515612 Add word WIPE 2020-04-27 21:28:34 -04:00
Virgil Dupras
2b2ccad96c Add word FILL 2020-04-27 21:22:06 -04:00
Virgil Dupras
f605e2d85c Give CASE's default branch access to its input value 
ref #97
 2020-04-27 20:44:21 -04:00
Virgil Dupras
3b66aefcd1 block editor: fix broken B and N 
fixes #97
 2020-04-27 18:11:54 -04:00
Virgil Dupras
295b4b6e0a z80a: add BIN( parameter 
Will be useful for assembling binaries for the TRS-80 which can't start
at addr 0.
 2020-04-27 15:11:38 -04:00
Virgil Dupras
865f4f9256 Move AT28 driver to blkfs 
And adjust rc2014/eeprom recipe
 2020-04-26 15:18:28 -04:00
Virgil Dupras
dee7eea497 Move link.fs to blkfs 2020-04-26 14:37:54 -04:00
Virgil Dupras
4d8574c1fe recipe/rc2014: use core libs from blkfs 2020-04-26 13:57:44 -04:00
Virgil Dupras
a2f164ecc3 emul: bootstrap to stage2 from within Collapse OS! 
Big bootstrapping change which greatly reduces the role of the modern
operating system in the bootstrapping process.
 2020-04-26 10:24:09 -04:00
Virgil Dupras
0e3cf7fa02 Add word ," 2020-04-26 09:01:49 -04:00
Virgil Dupras
6f896caf7a Copy core words to blkfs 2020-04-25 21:54:07 -04:00
Virgil Dupras
13771d8c92 xcomp: add XPACK 2020-04-25 16:02:47 -04:00
Virgil Dupras
389b23fe1a Change C<? mechanic 
It's now a simple flag updated by the C< implementation. No more
routine pointer.

The goal is to avoid tons of "ok" during a LOAD operation.
 2020-04-25 09:10:25 -04:00
Virgil Dupras
5219887ad7 sdc: implement _crc16 in z80 2020-04-24 20:46:01 -04:00
Virgil Dupras
8d78ca9dac tests: add test_sdc 
The SD card driver is a bit too slow to be bearable. I'll write
_crc16 in z80 and see how it goes.
 2020-04-24 18:23:29 -04:00
Virgil Dupras
816563e2e3 Stop LOADing on ABORT 
This is done by adding a "C<* override" layer that is reset to 0 on
ABORT.

The problem was that when ABORT happened during a LOAD, we had a
resetted RSP and started from a clean INTERPRET, but LOAD didn't
have the opportunity to restore C<*, which caused it to continue
interpreting from the faulty BLK.

With a C<* override, we don't need to *restore* C<*, we just need to
clear the override.
 2020-04-24 14:10:40 -04:00
Virgil Dupras
af39b37dd1 Replace the "> " prompt with the more traditional "ok" one 
This is more than cosmetic, it's also highly usable. The presence
or absence of the "ok" message allows us to know whether the command
aborted. Previously, the "> " prompt appeared when the system expected
a prompt in the INTERPRET context, whether the previous command aborted
or not.

Also, this allows us to get rid of that ugly FLAGS global variable.
 2020-04-24 12:10:07 -04:00
Virgil Dupras
44403c3d4c Move icore to blkfs 
The way is clear for complete stage1 bootstrapping on the RC2014
target!
 2020-04-23 15:14:14 -04:00
Virgil Dupras
8fbbf5209a Copy sdc driver to blkfs 2020-04-23 13:55:00 -04:00
Virgil Dupras
a19376df6c Copy ACIA driver to blkfs 
We can get rid of acia.z80, but not of acia.fs yet, we still need it.
 2020-04-23 12:42:41 -04:00
Virgil Dupras
503dbe9a2c Copy boot.z80 to blkfs 2020-04-22 21:19:12 -04:00
Virgil Dupras
338769a0a8 z80a: add PUSH0, PUSH1, PUSHZ, macros 2020-04-22 19:03:32 -04:00
Virgil Dupras
7a0e63746f parse: don't validate 0x and 0b lengths 
It doesn't serve much purpose and takes up many precious bytes. And,
after all, parsed didn't do it either...
 2020-04-21 20:40:23 -04:00
Virgil Dupras
372524fd19 Move xcomp to blocks 2020-04-21 20:30:14 -04:00
Virgil Dupras
446ce574cd Add words "'S" and "S0" 2020-04-21 07:45:23 -04:00
Virgil Dupras
0438cb92fe Add word "ROLL" 2020-04-20 23:06:39 -04:00
Virgil Dupras
2de1eabaa6 z80a: add LDIR, LDDR, and friends 2020-04-20 21:36:29 -04:00
Virgil Dupras
41ed70f8cb z80c: Add word "PICK" 2020-04-20 21:22:07 -04:00
Virgil Dupras
58c017448f z80a: add JPccnn, 2020-04-20 21:18:33 -04:00
Virgil Dupras
d466c6d95d emul: make stage2 load z80a from blkfs 
This allows us to remove forth/z80a.fs. Another big step towards
self-hosting!
 2020-04-19 21:31:41 -04:00
Virgil Dupras
0892193cbe Copy z80a.fs to disk blocks 
I don't remove z80a.fs yet because build process needs it, but that
will change shortly.
 2020-04-19 20:36:13 -04:00
Virgil Dupras
f3c92684a0 link: improve reliability by never relinking last word 
It's not possible to reliably determine its end and with some memory
initialization scenarios, it makes RLDICT fail.
 2020-04-18 16:51:48 -04:00
Virgil Dupras
b062a9092a parse: use "0<" instead of "0 <" 
As I wrote in my "Clarify signed-ness" commit, "0 <" is broken.

Also, made this unit a bit more compact. The RC2014 stage1 can
really use some breathing room...
 2020-04-18 09:18:09 -04:00
Virgil Dupras
66f65daa08 Add word LEAVE 2020-04-18 08:37:57 -04:00
Virgil Dupras
2cadae260d editor: add "U" word 2020-04-17 07:51:59 -04:00