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Author SHA1 Message Date
Virgil Dupras
cdd0b64570 Modify userspace .org and RAMSTART expectations 
Instead of expecting a `USER_CODE` symbol to be set, we expect `.org` to be
set in all userspace glue code. This gives us more flexibility with regards to
how we manage that.

Moreover, instead of making `USER_RAMSTART` mandatory, we make it default to
the end of the binary, which is adequate in a majority of cases.

Will be useful for my upcoming mega-commit... :)
 2019-11-15 10:33:13 -05:00
Virgil Dupras
d74b85f146 zasm: allow .org to be specified from command line 
Also important for upcoming mega commit...
 2019-11-15 09:57:53 -05:00
Virgil Dupras
e5255d22f9 zasm: make .org affect "@" symbol 2019-11-15 08:59:26 -05:00
Virgil Dupras
79e04189b0 Update bootstrap binaries 2019-11-14 21:25:11 -05:00
Virgil Dupras
6e714875dc zasm: Constants now override labels at all times 
Will be important for a mega-commit I'm preparing.
 2019-11-14 21:16:36 -05:00
Virgil Dupras
7cf3ed38da Extract str.asm from core.asm and make core included by userspace 
Most of register fiddling routines (which is now the only thing contained
in care.asm) are used by almost all userspace apps, often in inner loops.

That makes the penalty of using jump tables for those a bit too high.
Moreover, it burdens jump tables needlessly.

Because this unit is very small (now that string routines are out), it makes
sense to always include it in binaries.
 2019-11-14 10:14:15 -05:00
Virgil Dupras
0e79035d9c Disable test failing on Travis 2019-11-13 22:37:00 -05:00
Virgil Dupras
69750b4da6 Update bootstrap binaries 2019-11-13 22:28:47 -05:00
Virgil Dupras
82995eb346 zasm: have .fill generate an error on overflow 
Can possibly avoid a lot of debugging pain.
 2019-11-13 22:27:48 -05:00
Virgil Dupras
8d46895dd3 lib/parse: decimal ending with a whitespace are now valid 
Also, make empty strings be parsed as invalid by parseDecimal.
 2019-11-13 22:10:06 -05:00
Virgil Dupras
7274dccbe7 Move ASCII consts to ascii.h 
And made them shorter in name. The new ascii.h file allow reuse in userspace
code.
 2019-11-13 20:38:06 -05:00
Virgil Dupras
7046d23cd6 Fix broken IRC link in README 2019-11-13 20:27:09 -05:00
Sarala Saraswati
0f65890074 add link to freenode irc channel and sonic.net hosted listserv (#75) 2019-11-13 20:17:21 -05:00
Virgil Dupras
f3992ed598 basic: begin an implementation from sratch 
Let's see where it will lead us...
 2019-11-13 15:28:16 -05:00
Virgil Dupras
1ae51bea3a tests: remove instr blacklist 
Because scas isn't used as a reference anymore, no need to blacklist its bugs
anymore.
 2019-11-12 20:47:09 -05:00
Virgil Dupras
39f3637c60 recipes/ti84: TI-84+ base recipe is complete! 
ref #41
 2019-11-12 20:32:56 -05:00
Virgil Dupras
0e9173a89a zasm: optimize handleRST a little bit 2019-11-12 19:45:56 -05:00
Virgil Dupras
4de2ce3ceb zasm: add RST instruction 2019-11-12 14:07:45 -05:00
Virgil Dupras
518df7a05e zasm: add poor man's indexing in instr table 
There's a lot of looping through that table. At first, I wanted to add some
bisecting, but 16-bit additions and multiplications involved made the idea a
bit less appealing. I went with a very basic, hardcoded index which should
speed things quite a bit at a minimal complexity cost.
 2019-11-11 20:59:26 -05:00
Virgil Dupras
cbc6fb5931 zasm: clean up jump table requirements 
There was a little bit of cruft.
 2019-11-11 20:21:13 -05:00
Virgil Dupras
17cc28e211 recipes/ti84: use a 3x5 font instead of a 5x7 one 
This allow a lot more characters to fit on that tiny screen...

ref #41
 2019-11-11 13:26:24 -05:00
Sarala Saraswati
cb1e68e3e2 add link to subreddit (#71) 2019-11-11 06:28:41 -05:00
Virgil Dupras
30d6fdb16b ti/lcd: use brand new support for IX in SRL and RR 2019-11-10 22:07:44 -05:00
Virgil Dupras
2bff486cd2 Update bootstrap binaries 2019-11-10 22:03:46 -05:00
Virgil Dupras
5f6b303e75 zasm: add IX/IY support to SRL, RR and RL 2019-11-10 22:03:18 -05:00
Virgil Dupras
506c3d0a96 zasm: generalize handling of IX/IY in 0xcb upcode family 
There's a couple of bit fiddling instructions that didn't have their
IX/IY variant implemented yet and without this commit, each of them
would have required a special routine. Not anymore.
 2019-11-10 21:02:18 -05:00
Virgil Dupras
d9d6093287 zasm: simplify (IX/Y+d) handling 
We now require less special handling.
 2019-11-10 20:16:50 -05:00
Virgil Dupras
68ef686c3c zasm: fix 16-bit include lineno counting 
It was actually counted in 8-bit mode...
 2019-11-10 13:50:26 -05:00
Virgil Dupras
999ab56366 zasm: add generic handling of BIT argument 
This reduces the need for special handling routine and will make my
life easier in my upcoming generic tratment of IX/IY prefix in upcodes
 2019-11-10 10:24:36 -05:00
Virgil Dupras
553b346b92 zasm: getUpcode -> spitUpcode 
Giving I/O responsibility to spitUpcode gives us wiggle room for
upcoming refactorings.
 2019-11-10 09:28:10 -05:00
Virgil Dupras
c4658591bd ti/lcd: allow for fonts smaller than 5 pixels 
That's a lot of code for such a small change, but there's a big difference
between 5 pixels and 4 pixels: 4 pixels requires compositing.
 2019-11-09 22:55:15 -05:00
Virgil Dupras
6d9f96aee6 ti/lcd: add support for backspace 
Also, fix visual glitch on line wrap.
 2019-11-09 14:37:52 -05:00
Virgil Dupras
a4190f9984 recipes/ti84: document usage 
ref #41
 2019-11-09 14:20:01 -05:00
Virgil Dupras
2026113480 ti/kbd: lowercase letters by default, 2nd to upcase 2019-11-09 13:38:35 -05:00
Virgil Dupras
9c37471780 ti/kbd: improve debouncing 
Previously, on real hardware (emulator behaved fine), we would routinely
get repeat keys unless pressing the button very fast. This commit solves that.
 2019-11-09 13:22:01 -05:00
Virgil Dupras
418af5f626 ti/kbd: make Alpha and 2nd toggle 
Previously, when being in A-Lock mode, activating Alpha wouldn't make
us go temporarily in digit mode, as is expected.
 2019-11-09 13:12:36 -05:00
Virgil Dupras
67f689260f ti/lcd: Add scrolling through z-offset 2019-11-09 08:25:10 -05:00
Virgil Dupras
6a70a0e5e6 ti/lcd: wrap rows on overflow 2019-11-09 08:09:01 -05:00
Virgil Dupras
b27a71cb88 ti/kbd: fix space character 2019-11-09 08:01:03 -05:00
Virgil Dupras
6c1b1f2b79 ti/lcd: wrap to next line when overflowing 2019-11-08 22:55:56 -05:00
Virgil Dupras
bb2e528b65 ti/lcd: clear screen on init 
LCD RAM persists between reboots, makingit necessary to clear it.

ref #41
 2019-11-08 21:54:03 -05:00
Virgil Dupras
c896b77143 ti/kbd: implement A-Lock 
ref #41
 2019-11-08 20:27:43 -05:00
Virgil Dupras
8d5c26f299 ti/kbd: add alpha support 
no a-lock or lowercase yet.

ref #41
 2019-11-08 15:45:45 -05:00
Virgil Dupras
ca8b315e9d ti/kbd: widen char detection 
no alpha yet.

ref #41
 2019-11-08 14:58:29 -05:00
Virgil Dupras
dca6ce4e8e ti/kbd: begin GetC implementation 
For now, only digits are scanned. Lifted from my "tiseg7" example.

ref #41
 2019-11-08 14:04:56 -05:00
Virgil Dupras
6a4bddc493 ti/lcd: ensure that variables are initialized 2019-11-08 11:45:37 -05:00
Virgil Dupras
a3c47f6272 Add tests for parseArgs 2019-11-08 10:53:52 -05:00
Virgil Dupras
e972dfe220 Add test documentation 2019-11-08 10:37:52 -05:00
Virgil Dupras
c57f2d6973 fonts/5x7: add lowercase letters 2019-11-07 22:27:12 -05:00
Virgil Dupras
fda9c9826e ti/lcd: add linefeed support 
There's no scrolling yet...

ref #41
 2019-11-07 20:53:15 -05:00