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collapseos
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398 Commits

Author SHA1 Message Date
Virgil Dupras 989d8bbabf forth: add "DOES>" and "CONSTANT" 2020-03-07 22:18:14 -05:00
Virgil Dupras 53024d88f5 forth: add "DUP", "OVER", "SWAP", "?", "+!", "ALLOT" 2020-03-07 21:12:30 -05:00
Virgil Dupras f0cf10ab7c forth: Check for PS underflow 2020-03-07 20:20:11 -05:00
Virgil Dupras 580214426a forth: add +-*/ 2020-03-07 19:42:07 -05:00
Virgil Dupras ad2aca4620 forth: add number literals support 2020-03-07 19:25:55 -05:00
Virgil Dupras 30f188b984 forth: add word ":" 2020-03-07 18:54:16 -05:00
Virgil Dupras e7cd3182d0 forth: add words "CREATE", "@", "!", "HERE", "QUIT" 2020-03-07 17:09:45 -05:00
Virgil Dupras 6f9d28b325 forth: add word "bye" 
And make interpret action looping until BYE.
 2020-03-07 13:15:19 -05:00
Virgil Dupras 391ddb9984 forth: add word "." 2020-03-07 12:50:54 -05:00
Virgil Dupras 49228e418c apps/forth: new (WIP) application 2020-03-07 12:13:15 -05:00
Virgil Dupras 97dcad9b15 recipes/sms/kbd: use Collapse OS' AVR assembler 2020-02-26 23:10:43 -05:00
Virgil Dupras 6224ea2fe9 zasm: use printcrlf instead of hardcoded CRLF 2020-02-23 18:52:25 -05:00
Virgil Dupras 69f0c6dafd trs80/floppy: implement write 2020-02-22 12:09:43 -05:00
Virgil Dupras 0f2b3aca24 zasm: allow zasm to omit its 3rd argument 
A bug in rdWS made zasm error out when omiting its 3rd argument.

fixes #90
 2020-02-18 15:46:55 -05:00
Clanmaster21 9cddaf1b59 String functions optimised (#86) 
* String functions optimised

A few functions have been tweaked, but the biggest changes are in strlen, strskip and toWS, which take around two third of the cycles they used to (although strskip has more overhead). 10 bytes saved total.
toWS had two bytes added inlining the isWS call, and a jump to unsetZ was inlined too, saving a byte. This saved 29 cycles, with the original function being 90 cycles. I looked at other uses of isWS and it's difficult to inline it effectively in every situation, so I haven't inlined it elsewhere.
rdWS had a byte and two cycles saved by inlining a jump to unsetZ.
strskip is the same size, with the loop cut down from 35 cycles to 21 cycles, but 18 cycles are added outside the loop. I expect one character strings are in the minority, so this should save cycles overall.
strlen had 8 bytes saved, with the loop cut down from 38 cycles to 21 cycles, and 18 cycles removed outside the loop.

* Fixed strskip

Strskip wasn't preserving a properly. The new code uses the shadow af register, so whilst a byte and 4 cycles have been added outside the loop, it's safer and cleaner. The flags register isn't affected, but since the search goes for up to 64Kb I think it's safe to say the end of the string will always be reached.

* Remove inlining of isWS
 2020-01-09 20:10:27 -05:00
Clanmaster21 927d5f2392 Reworked parseHexadecimal and parseDecimal, other minor tweaks (#85) 
I've tweaked nearly every function in this file, so I'll go through them one by one.
parseDecimal has been reworked a little so that `a` can be used instead of `b` for checking for overflow. I had originally intended to redo it to work like the old parseDecimal, but I think the current method (once reworked a little) is cleaner and smaller, and should be just as fast. 7 bytes and 27 cycles saved.
parseHexadecimal has been changed to load hex digits into `b` `d` `c` `e` from the right (so all the digits move along to the left so the new digit can be inserted on the right), and then only at the end is any shifting done, using the faster `add a, a` to do left shifts. 9 bytes saved and 78 cycles saved inside the loop, and then 49 cycles added after the loop. 
parseBinaryLiteral had a few instructions moved around, saving two bytes and 5 cycles inside the loop, and a further 15 cycles saved on error.
parseLiteral has been reworked slightly, the isDigit call has been replaced with an inline parseDecimalDigit, saving a byte and around 20-30 cycles, with around 16 more cycles saved if the number is a decimal. The .char routine has been reduced by a byte, and 6 cycles saved on success, but 5 cycles added on error.
isDigit has been reduced by 4 bytes and 10 cycles on success, with a few more cycles saved on fail (hard to estimate due to branching).
 2020-01-08 16:12:40 -05:00
Virgil Dupras 7ca54d179d lib/expr: make EXPR_PARSE "tail" HL 
Things are now much simpler.
 2019-12-30 19:24:53 -05:00
Virgil Dupras 73a5275b1e lib/parse: make parseBinaryLiteral "tail" HL 2019-12-30 13:05:21 -05:00
Virgil Dupras 289037a3dd lib/parse: make parseDecimal "tail" HL 
HL, instead of being preserved, is set to the character following
the last read character.
 2019-12-30 10:13:55 -05:00
Virgil Dupras dcb96aefe9 lib/parse: remove parseHexPair 
Also, make parseHexadecimal "tail" (HL). Soon, all routines in lib/parse
will do that, making the life of lib/expr easier.
 2019-12-29 21:56:56 -05:00
Virgil Dupras 2503bdfced lib/args: remove 2019-12-29 21:05:09 -05:00
Virgil Dupras 5f2615a134 at28w: don't use lib/args 2019-12-29 21:02:04 -05:00
Virgil Dupras 346bcc3d3d zasm: don't use lib/args 
This unit is being removed.
 2019-12-29 20:56:13 -05:00
Virgil Dupras d0f031939f lib/parse: make parseLiteral a little tighter 
Sub-parsers are seldom used by themselves, except for parseDecimal.
I'm tightening the code of this unit for two reasons:

1. Optimization
2. Upcoming API change where HL won't be preserved anymore, but will
   point to char following the last parse char. This will allow us
   to simplify lib/expr.
 2019-12-29 19:47:19 -05:00
Virgil Dupras 15628da7de lib/expr: make EXPR_PARSE put result in DE instead of IX 
Finally getting rid of this bad mistake of using IX for this.
 2019-12-29 17:37:04 -05:00
Virgil Dupras 981c93bfd4 lib/expr: fix stack imbalance on failure 2019-12-29 16:15:48 -05:00
Virgil Dupras 213614af33 lib/expr: make recursion process a bit more orderly 
Instead of going left and right, finding operators chars and replacing them
with nulls, we parse expressions in a more orderly manner, one chunk at a
time. I think it qualifies as "recursive descent", but I'm not sure.

This allows us to preserve the string we parse and should also make the
implementation of parens much easier.
 2019-12-29 11:42:18 -05:00
Virgil Dupras 7410891ad1 lib/expr: fix unary minus 
For some reason, I've mistakenly disabled tests in test_expr without noticing
and I also broke "-123" parsing. Fixed.
 2019-12-23 20:53:31 -05:00
Virgil Dupras 6d88c3a754 parseExprDE --> parseExpr 2019-12-23 19:13:44 -05:00
Virgil Dupras 5301200d6f basic: parseExpr --> parseExprDE 2019-12-23 19:01:03 -05:00
Virgil Dupras 476178ee7c zasm: parseExpr --> parseExprDE 2019-12-23 18:44:55 -05:00
Virgil Dupras cc754e12aa parseExpr --> parseExprDE: easy ones 
Those replacements were trivially equivalent. For the other ones, an
examination of the context is necessary.
 2019-12-23 15:59:55 -05:00
Virgil Dupras a034f63e23 test: begin adding common test harnessing code 
This should make tests a bit more convenient to write and debug.

Moreover, begin de de-IX-ization of parseExpr. I have, in a local WIP, a
parseExpr implemented using a recursive descent algo, it passes all tests, but
it unfortunately assembles a faulty zasm. I have to find the expressions that
it doesn't parse properly.

But before I do that, I prefer to commit these significant improvements I've
been making to tests harness in parallel of this development.
 2019-12-23 15:41:25 -05:00
Virgil Dupras 98ca338aba avra: add LD/ST 2019-12-22 21:50:20 -05:00
Virgil Dupras 51e500e8da avra: avoid pgm addr truncation error on first pass 2019-12-22 19:44:46 -05:00
Virgil Dupras b955a67daa avra: add TST 2019-12-22 19:24:36 -05:00
Virgil Dupras 6e1e8e0e59 avra: add LSL 2019-12-22 18:36:15 -05:00
Virgil Dupras 8ded02bc78 avra: fix misordered MOV, MUL, NEG and NOP 2019-12-22 18:35:08 -05:00
Virgil Dupras f54e10f9fd avra: add CALL and JMP 2019-12-22 15:54:46 -05:00
Virgil Dupras 10b925e0e0 avra: add BCLR and BSET 2019-12-22 15:11:15 -05:00
Virgil Dupras 1771ee8da7 avra: add SER 2019-12-22 15:01:08 -05:00
Virgil Dupras 0a9ac27cf6 avra: add SBIC and SBIS 2019-12-22 14:55:38 -05:00
Virgil Dupras a9dcba5793 avra: add CBR instruction 2019-12-22 14:45:10 -05:00
Virgil Dupras c968995ec0 avra: add CBI and SBI 
This completes instruction support for the Blink tn45 example.
 2019-12-15 20:51:31 -05:00
Virgil Dupras 5c43988649 avra: code consolidation 2019-12-15 20:15:44 -05:00
Virgil Dupras b130cac635 avra: code consolidation 2019-12-15 19:17:03 -05:00
Virgil Dupras 52359a4e42 avra: a little code deduplication 2019-12-15 18:52:00 -05:00
Virgil Dupras e9c692ed50 avra: a litte bit of code deduplication 2019-12-15 18:34:14 -05:00
Virgil Dupras 2652c81519 avra: make CLR work properly 2019-12-15 16:43:32 -05:00
Virgil Dupras 20861767e6 avra: generalize arg swapping behavior 2019-12-15 16:36:43 -05:00
Virgil Dupras 14fbfa2967 avra: small _parseArgs refactoring 
Take argspec pairs directly as an argument instead of taking a
pointer to an argspec pair.
 2019-12-15 16:25:16 -05:00
Virgil Dupras 62eb5589c3 avra: refactor instruction tbl 
The instruction table is now beefier and has redundant data, but
this simplifies processing. This should simplify upcoming work.
 2019-12-15 15:53:28 -05:00
Virgil Dupras aa8df95f7d Add "avr/" includes folder 
Also, add a "real world" example in AVRA tests, a blink program on
a ATtiny45. Some instructions are commented out because they aren't
implemented yet, but not many.

The output of the program has been verified against AVRA's own
output.
 2019-12-15 09:38:01 -05:00
Virgil Dupras 64935d8b40 avra: add IN and OUT instructions 2019-12-15 08:43:59 -05:00
Virgil Dupras ab578159b7 avra: refactor args parsing 
This costs us a bit of space for now but should make things a lot
simpler down the road, especially with "alias ops" which are simple
syntactic sugar for another op.
 2019-12-14 15:17:55 -05:00
Virgil Dupras fa75f30ffb avra: add RJMP and RCALL instructions 2019-12-14 12:28:27 -05:00
Virgil Dupras 33c480a5dd avra: remove useless instrBRBits table 
I had written this when trying different approaches to adding BR and
I forgot to remove it.
 2019-12-14 09:41:36 -05:00
Virgil Dupras a5efc695e9 avra: add "Rd + bit" instructions 2019-12-14 09:33:46 -05:00
Virgil Dupras c696fcbce4 avra: add "with immediate" instructions 2019-12-14 09:05:38 -05:00
Virgil Dupras 4b9712a224 avra: add branching instructions 2019-12-13 22:49:15 -05:00
Virgil Dupras 57c1a10434 avra: first steps 2019-12-13 17:38:40 -05:00
Virgil Dupras e691dab070 zasm: little drive-by optimization 
Use IX directly for argspec rows instead of going through DE. It saves a bit
of processing. The code was this way because I initially didn't use IX at all,
so as code evolved, that DE translation stayed as an artifact.
 2019-12-13 10:54:01 -05:00
Virgil Dupras 0d7693a163 core: remove writeHLinDE 
It wasn't used much so I inlined it.
 2019-12-13 09:56:23 -05:00
Virgil Dupras 4f7a05e3b7 core: remove cpHLDE 
It wasn't used much, so I replaced its use in the kernel with direct code
and moved the routine in apps/ed, the only other place where it was used.
 2019-12-12 15:53:14 -05:00
Virgil Dupras 43f4c5200e basic: don't choke on ':' in '"' literals 2019-12-12 12:22:38 -05:00
Virgil Dupras 3db38b0d89 basic: add while command 2019-12-12 11:17:10 -05:00
Virgil Dupras 51c977f2ed basic: allow multiple commands on the same line 2019-12-12 10:51:13 -05:00
Virgil Dupras 1710c865dc doc: refer to the new BASIC shell in example 
ref #80
 2019-12-11 14:57:07 -05:00
Virgil Dupras 25d25d017c Replace old shell with BASIC shell 
fixes #80
 2019-12-11 14:05:34 -05:00
Virgil Dupras 20151a97f8 recipes/rc2014/zasm: use BASIC shell 
Also made Makefile actually portable.
 2019-12-11 13:01:51 -05:00
Virgil Dupras 880775ae69 recipes/rc2014/sdcard: use BASIC shell 2019-12-11 11:18:32 -05:00
Virgil Dupras beaea6f978 basic: add puth command 2019-12-09 14:34:14 -05:00
Virgil Dupras 105acedab8 basic: improve README 
markdown formatting was broken. Also, don't mark it as WIP.
 2019-12-01 20:15:45 -05:00
Virgil Dupras 10864afa96 recipes/ti84: use the BASIC shell 2019-12-01 20:11:13 -05:00
Virgil Dupras 4c07639808 basic: make cmd table more compact 
This shaves off quite a few bytes from the binary.
 2019-11-30 21:36:34 -05:00
Virgil Dupras 4ba84dac5c basic: add getc/putc commands 2019-11-30 21:13:44 -05:00
Virgil Dupras 77485a0031 basic: change welcome prompt 
This is becoming the new shell, it has to step up to its new responsibilities!
 2019-11-30 20:50:34 -05:00
Virgil Dupras fc23a7c4a1 basic: do registers-to-vars transfer after pgm hook call 2019-11-25 23:16:15 -05:00
Virgil Dupras 264e72e0fd basic: add fnew and fdel commands 2019-11-25 22:49:24 -05:00
Virgil Dupras 7c893dada1 basic: can now execute user apps! 
Shell replacement sequence beginning in 3, 2, 1...
 2019-11-25 22:05:10 -05:00
Virgil Dupras b29073b01d basic: add fopen command 2019-11-25 21:41:37 -05:00
Virgil Dupras a0daed6812 basic: add usr command 2019-11-24 21:07:03 -05:00
Virgil Dupras 12bc120375 basic: add bsel, bseek, getb, putb commands 2019-11-24 20:34:23 -05:00
Virgil Dupras 8f1d942e5f basic: add addr command 2019-11-24 15:39:36 -05:00
Virgil Dupras 381d57a513 basic: make variable A the only input variable 
Mechanism for assigning inputs to the specified variable is clumsy and uses
binary space. Always using A is much simpler and doesn't seem very limiting to
me. I do that because there's many more "input" commands I'd like to add.
 2019-11-24 14:55:50 -05:00
Virgil Dupras e1df320d44 basic: add ldbas command 2019-11-24 14:26:32 -05:00
Virgil Dupras 13f935aa88 basic: add fls command 
Also, add the new `bshell` emulated tool. BASIC is on its way to replace the
shell.
 2019-11-24 10:24:15 -05:00
Virgil Dupras b7d4860acf basic: add in/out commands 
Also, fixed the cmd matching algo to not accept partial matches. For example,
to stop matching "input" when the command was "in".
 2019-11-23 20:38:56 -05:00
Virgil Dupras 7761cebb0a basic: add sleep command 
also fix broken "peek"
 2019-11-23 17:07:14 -05:00
Virgil Dupras 9602f9b983 basic: add peek/poke/deek/doke commands 2019-11-23 16:09:34 -05:00
Virgil Dupras a680fd3328 basic: add support for signed integers 2019-11-23 14:56:23 -05:00
Virgil Dupras 501fe96e07 lib/expr: use the IX register a bit less 
It's an awkward register to use and avoiding its use allows us to strip the
resulting binary significantly. parseEXPR keeps the same signature though.
 2019-11-22 19:56:08 -05:00
Virgil Dupras 2f71ad6d2f lib/expr: add left/right shifting operators 2019-11-22 18:35:10 -05:00
Virgil Dupras a03c5ac700 lib/expr: add bitwise operators 2019-11-22 17:16:51 -05:00
Virgil Dupras 972e8221f1 lib/expr: add division and modulo operators 2019-11-22 15:03:16 -05:00
Virgil Dupras 1b01f13105 lib/expr: refactor for easier operator addition 2019-11-22 14:45:12 -05:00
Virgil Dupras fd5b2ab856 Put app-common documentation in apps/README.md 2019-11-22 14:01:16 -05:00
Virgil Dupras e17dc1e1e1 basic: add input command 2019-11-21 20:17:55 -05:00
Virgil Dupras 982d20f895 basic: allow printing of quoted strings 2019-11-21 19:56:51 -05:00
Virgil Dupras 704d32279a basic: document better 2019-11-21 17:03:46 -05:00