Commit Graph

227 Commits

Author SHA1 Message Date
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