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Author SHA1 Message Date
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
Virgil Dupras
f4871d4d58 recipes/ti84: add upload instructions 
ref #41
 2019-11-07 13:42:40 -05:00
Virgil Dupras
a13a94bbc7 fix typos 2019-11-07 12:13:00 -05:00
Virgil Dupras
ca84b5dac8 recipes/ti84: first step 
This was mostly lifted from my "tihello" example, but it required significant
adjustments.

This commit also introduces a font management system. A lot of fonts are
available online, but sources aren't always clear so to avoid copyright
landmines, I re-created my first 5x7 font from scratch.

As it is now, this resulting ROM gets "Collapse OS>" to be displayed on the
LCD screen. Much work still left to do.

ref #41
 2019-11-07 11:52:29 -05:00
Virgil Dupras
69daf49920 doc: fix mis-wording 2019-11-05 17:59:29 -05:00
Virgil Dupras
6396eb4a9e tricks: add endianness notes 2019-11-04 16:49:53 -05:00
Virgil Dupras
9344c4b961 doc: minor improvements 2019-11-04 14:45:10 -05:00
Virgil Dupras
3ef964e74d acia: make GetC blocking 2019-11-04 14:44:43 -05:00
Virgil Dupras
f395297874 Improve python tools' shebang 
Most OS don't have python3 in /usr/bin/python...
 2019-11-04 14:43:27 -05:00
Virgil Dupras
41338a4b23 stdio: add "Accepted characters" comment section 
ref #64
 2019-11-04 10:12:17 -05:00
Virgil Dupras
27149338e4 stdio: fix typo 2019-11-04 10:04:09 -05:00
Virgil Dupras
2a55bfd375 stdio: remove a layer of indirection in GetC/PutC 
We use zasm's ability to use labels in .equ directive.

We didn't do it before because for a while, we were in between scas
and zasm (scas was used in automated tests) so we needed to use the
lowest common denominator: zasm doesn't have macros and scas can't
use labels in .equ directives.

This forced us to add this layer of indirection. But now that we are
completely cut from scas' dependency, we can use this nice zasm's
ability.
 2019-11-04 09:55:12 -05:00
Virgil Dupras
2a513e6f57 stdio: make stdioGetC and stdioReadline blocking 
ref #64.

Also, fix a bug in the shell where it would write outside the buffer's
bounds when given a completely filled buffer without a space character
in it.
 2019-11-03 20:32:27 -05:00
Virgil Dupras
16bf8e28c0 Remove SHELL_LOOPHOOK 
It was a bad idea and having sms/pad interact directly with sms/vdp
is much simpler.

ref #64
 2019-11-03 19:13:01 -05:00
Virgil Dupras
20c0ba3dd0 Clarify recipes structure 
Drop the "{pre,post}-collapse" thing and specify that the rc2014 recipes
are canonical.
 2019-11-03 16:09:11 -05:00
Virgil Dupras
8a696a1e23 Add "See it in action" section to README 
closes #15
 2019-10-31 20:49:35 -04:00
Virgil Dupras
a86234c87e Fix typo in shell's emul{Get,Put}C 2019-10-31 18:49:02 -04:00
Virgil Dupras
1f26879cd3 Add TRICKS.txt 2019-10-30 21:00:10 -04:00
Virgil Dupras
d5c9bf5eec Add travis support 2019-10-30 19:12:02 -04:00