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Commit Graph

398 Commits

Author SHA1 Message Date
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
Virgil Dupras
7262993f14 basic: add if 2019-11-21 16:06:14 -05:00
Virgil Dupras
3f3dd9141e basic: allow multiple args in print 2019-11-20 21:02:11 -05:00
Virgil Dupras
9c400ca642 basic: add goto
Things are getting super cereal...
2019-11-20 15:45:53 -05:00
Virgil Dupras
9d6cbe577c basic: add variables
Things are getting cereal...
2019-11-20 15:10:00 -05:00
Virgil Dupras
9c9484fb88 basic: add run command 2019-11-20 10:49:23 -05:00
Virgil Dupras
9d1003e7a2 basic: keep line index ordered and line numbers unique 2019-11-19 21:55:26 -05:00
Virgil Dupras
62138b12cf basic: add buffer line index 2019-11-19 20:43:01 -05:00
Virgil Dupras
4c6de413df basic: begin implementing a line buffer 2019-11-19 15:14:04 -05:00
Virgil Dupras
f5b04fc02f basic: add expression support to print
Again, same thing as in zasm.
2019-11-18 15:52:44 -05:00
Virgil Dupras
0bd58fd178 basic: parse hex, binary and char literals
Same thing as in zasm.
2019-11-18 15:22:09 -05:00
Virgil Dupras
1cea6e71e0 basic: add a print cmd
It can only print a decimal literal. But still, that's a big step because
I hadn't implemented decimal formatting yet.
2019-11-18 13:40:23 -05:00
Virgil Dupras
019d05f64c Make the shell a userspace app
That's my mega-commit you've all been waiting for.

The code for the shell share more routines with userspace apps than with kernel
units, because, well, its behavior is that of a userspace app, not a device
driver.

This created a weird situation with libraries and jump tables. Some routine
belonging to the `kernel/` directory felt weird there.

And then comes `apps/basic`, which will likely share even more code with the
shell. I was seeing myself creating huge jump tables to reuse code from the
shell. It didn't feel right.

Moreover, we'll probably want basic-like apps to optionnally replace the shell.

So here I am with this huge change in the project structure. I didn't test all
recipes on hardware yet, I will do later. I might have broken some...

But now, the structure feels better and the line between what belongs to
`kernel` and what belongs to `apps` feels clearer.
2019-11-15 15:37:49 -05:00
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
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
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
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
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
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
b745f49186 Rename blockdev's API routines to GetB/PutB
The goal is to avoid mixing those routines with "character devices"
(acia, vpd, kbd) which aren't block devices and have routines that
have different expectations.

This is a first step to fixing #64.
2019-10-30 16:59:35 -04:00
Clanmaster21
38333e9e07 Decimal parse optimisations (#45)
* Optimised parsing functions and other minor optimisations

UnsetZ has been reduced by a byte, and between 17 and 28 cycles saved based on branching. Since branching is based on a being 0, it shouldn't have to branch very often and so be 28 cycles saved most the time. Including the initial call, the old version was 60 cycles, so this should be nearly twice as fast. 
fmtHex has been reduced by 4 bytes and between 3 and 8 cycles based on branching.
fmtHexPair had a redundant "and" removed, saving two bytes and seven cycles.
parseHex has been reduced by 7 bytes. Due to so much branching, it's hard to say if it's faster, but it should be since it's fewer operations and now conditional returns are used which are a cycle faster than conditional jumps. I think there's more to improve here, but I haven't come up with anything yet.

* Major parsing optimisations

Totally reworked both parseDecimal and parseDecimalDigit
parseDecimalDigit no longer exists, as it could be replaced by an inline alternative in the 4 places it appeared. This saves one byte overall, as the inline version is 4 bytes, 1 byte more than a call, and removing the function saved 5 bytes. It has been reduced from between 52 and 35 cycles (35 on error, so we'd expect 52 cycles to be more common unless someone's really bad at programming) to 14 cycles, so 2-3 times faster.
parseDecimal has been reduced by a byte, and now the main loop is just about twice as fast, but with increased overhead. To put this into perspective, if we ignore error cases:
For decimals of length 1 it'll be 1.20x faster, for decimals of length 2, 1.41x faster, for length 3, 1.51x faster, for length 4, 1.57x faster, and for length 5 and above, at least 1.48x faster (even faster if there's leading zeroes or not the worst case scenario).
I believe there is still room for improvement, since the first iteration can be nearly replaced with "ld l, c" since 0*10=0, but when I tried this I could either add a zero check into the main loop, adding around 40 cycles and 10 bytes, or add 20 bytes to the overhead, and I don't think either of those options are worth it.

* Inlined parseDecimalDigit

See previous commit, and /lib/parse.asm, for details

* Fixed tabs and spacing

* Fixed tabs and spacing

* Better explanation and layout

* Corrected error in comments, and a new parseHex

5 bytes saved in parseHex, again hard to say what that does to speed, the shortest possible speed is probably a little slower but I think non-error cases should be around 9 cycles faster for decimal and 18 cycles faster for hex as there's now only two conditional returns and no compliment carries.

* Fixed the new parseHex

I accidentally did `add 0xe9` without specifying `a`

* Commented the use of daa

I made the comments surrounding my use of daa much clearer, so it isn't quite so mystical what's being done here.

* Removed skip leading zeroes, added skip first multiply

Now instead of skipping leading zeroes, the first digit is loaded directly into hl without first multiplying by 10. This means the first loop is skipped in the overhead, making the method 2-3 times faster overall, and is now faster for the more common fewer digit cases too. The number of bytes is exactly the same, and the inner loop is slightly faster too thanks to no longer needing to load a into c.
To be more precise about the speed increase over the current code, for decimals of length 1 it'll be 3.18x faster, for decimals of length 2, 2.50x faster, for length 3, 2.31x faster, for length 4, 2.22x faster, and for length 5 and above, at least 2.03x faster. In terms of cycles, this is around 100+(132*length) cycles saved per decimal.

* Fixed erroring out for all number >0x1999

I fixed the errors for numbers >0x1999, sadly it is now 6 bytes bigger, so 5 bytes larger than the original, but the speed increases should still hold.

* Fixed more errors, clearer choice of constants

* Clearer choice of constants

* Moved and indented comment about fmtHex's method

* Marked inlined parseDecimalDigit uses

* Renamed .error, removed trailing whitespace, more verbose comments.
2019-10-24 07:58:32 -04:00
Clanmaster21
cca3157c66 addHL and subHL affect flags, and are smaller (#30)
* addHL and subHL affect flags, and are smaller

Most importantly, addHL and subHL now affect the flags as you would expect from a 16 bit addition/subtraction. This seems like it'd be preferred behaviour, however I realise any code relying on it not affecting flags would break. One byte saved in addHL, and two bytes saved in subHL. Due to the branching nature of the original code, it's difficult to compare speeds, subHL is either 1 or 6 cycles faster depending on branching, and addHL is between -1 and 3 cycles faster. If the chance of a carry is 50%, addHL is expected to be a cycle faster, but for a chance of carry below 25% (so a < 0x40) this will be up to a cycle slower.

* Update core.asm

* Reworked one use of addHL

By essentially inlining both addHL and cpHLDE, 100 cycles are saved, but due to the registers not needing preserving, a byte is saved too.

* Corrected spelling error in comment

* Reworked second use of addHL

43 cycles saved, and no more addHL in critical loops. No bytes saved or used.

* Fixed tabs and spacing, and made a comment clearer.

* Clearer comments

* Adopted push/pop notation
2019-10-17 16:45:27 -04:00
Virgil Dupras
f806786bd3 zasm: document lack of support for undocumented instructions 2019-10-17 15:52:59 -04:00
Virgil Dupras
3b1bbc1751 zasm: support negative displacement for IX/IY
Needed by #30.
2019-10-17 15:38:11 -04:00
luz.paz
6a635fddd9 Fix misc. source comment typos
Found via `codespell -q 3 -S ./tools -L splitted`
2019-10-09 11:12:08 -04:00
Virgil Dupras
83b314c450 zasm: lower RAM requirements
I've tested RAM usage when self-assembling and there weren't as high
as I thought. zasm's defaults now use less than 0x1800 bytes of RAM,
making it possible, theoretically for now, for a Sega Master System
to assemble Collapse OS from within itself.
2019-10-06 15:42:09 -04:00
Virgil Dupras
e4732d79dc zasm: tighten directive detection a bit 2019-10-06 14:39:47 -04:00
Virgil Dupras
f4b6c7637d zasm: rename #inc to .inc
scas, it's not needed any more.
2019-10-06 14:32:23 -04:00
Virgil Dupras
612323f714 zasm: add "last value" symbol (@) 2019-10-04 20:26:21 -04:00
Virgil Dupras
8db1bdb245 ed: add '.' and '$' support 2019-10-04 13:49:33 -04:00
Virgil Dupras
c96c8e7df0 ed: update curline after a, i and d 2019-07-25 21:24:36 -04:00
Virgil Dupras
d1735c3a73 zasm: remove last remnants of "old style" variables
This makes zasm suitable to run from ROM.
2019-07-25 14:02:04 -04:00
Virgil Dupras
1c6a7caeae recipes/sms/romasm: make zasm's memory usage fit the SMS 2019-07-23 16:50:19 -04:00
Virgil Dupras
af0b6231ca recipes/sms/romasm: make ed's memory usage fit the SMS
Yup, that's ultimately why I've just made this whole big zasm
refactoring in the previous commits. To allow for this.

But also, zasm is in much better shape now...
2019-07-23 16:13:52 -04:00
Virgil Dupras
c2d84563dd zasm: allow duplicate const definition
This will allow interesting override scenarios, adding flexibility.
2019-07-23 16:01:23 -04:00
Virgil Dupras
1dec33e02a zasm: make symbol registry a bit more straightforward
Instead of strings of variable length driving the iteration of the
registry, we do so through records that keep track of lengths and
counts.
2019-07-23 15:21:42 -04:00
Virgil Dupras
02c7eb0161 zasm: clarify strlen's API 2019-07-23 14:59:38 -04:00
Virgil Dupras
cc7a4bae58 zasm: improve .equ duplicate detection handling
Things are a bit more straightforward now.
2019-07-23 14:00:01 -04:00
Virgil Dupras
9ea72dc1d0 zasm: add separate symbol registry for constants
This will allow me to make the ".org" treatment a bit less murky.
2019-07-23 13:59:55 -04:00
Virgil Dupras
cdb206b7a5 zasm: fix nasty (iy+d) misparsing bug
*sob*...
2019-07-23 13:58:18 -04:00
Virgil Dupras
b95f4c8c24 zasm: remove SYM_CTX_PTR 2019-07-22 16:34:40 -04:00
Virgil Dupras
f4f91ebd79 zasm: remove SYM_CTX 2019-07-22 16:13:00 -04:00
Virgil Dupras
311d04e9aa zasm: make symbol registry easily parametrizable
I'm about to split the global registry in two (labels and consts)
and the previous state of registry selection made things murky.
Now it's much better.
2019-07-22 15:13:09 -04:00
Virgil Dupras
0237ff105f ed: fix 'd' going crazy when deleting last lines of buf 2019-07-21 19:43:45 -04:00
Virgil Dupras
0fd16a0bb6 ed: fix boken 'a' and 'd' cmds 2019-07-21 19:32:24 -04:00
Virgil Dupras
421d881fae ed: allow inserting in empty file 2019-07-21 15:06:03 -04:00
Virgil Dupras
34f499184d zasm: add ".bin" directive
Also, remove zasm/test7 because it changes too much all time time
(whenever zasm changes) and isn't precise enough. Too much noise,
not worth it.
2019-07-21 12:58:02 -04:00
Virgil Dupras
01031a780a ed: Add 'w' command 2019-07-21 11:40:26 -04:00
Virgil Dupras
f6479486f2 ed: allow appending at the end of the file 2019-07-21 11:12:49 -04:00
Virgil Dupras
8d7abd9994 ed: fix broken buf insert logic 2019-07-21 10:53:11 -04:00
Virgil Dupras
1a5a1b9861 ed: make scratchpad memory only
The dual scraptchpad thing doesn't work. Things become very
complicated when it's time to write that back to the file. We
overwrite our contents and end up with garbage.
2019-07-21 10:45:58 -04:00
Virgil Dupras
942d2a952d ed: take filename as an argument
This hard-binds ed to the filesystem (I liked the idea of working
only with blockdevs though...), but this is necessary for the
upcoming `w` command. We need some kind of way to tell the
destination to write to truncate itself.

This only has a meaning in the filesystem, but it's necessary to
let the file know that its registered file size has possibly
shrunk.

I thought of alternatives that would have allowed me to keep ed
blkdev-centered, but they were all too hackish to my own taste.

Hence, this new hard-bind on files.
2019-07-20 19:43:07 -04:00
Virgil Dupras
fe15bafeca zasm: fix bug with registry selection
During expression parsing, if a local label was parsed, it would
select the local registry and keep that selection, making
subsequent global labels register in the wrong place.
2019-07-20 18:07:52 -04:00
Virgil Dupras
eefadc3917 ed: add support for 'a' and 'i' 2019-07-14 17:35:21 -04:00
Virgil Dupras
77a23cee84 ed: fix bufDelLines logic
It was mostly wrong.
2019-07-14 16:18:33 -04:00
Virgil Dupras
5669884508 ed: read initial contents in bufInit 2019-07-14 12:19:37 -04:00
Virgil Dupras
3b0029335a ed: add README 2019-07-14 11:31:14 -04:00
Virgil Dupras
8af1cf468c ed: add 'd' cmd 2019-07-14 10:32:28 -04:00
Virgil Dupras
50d0dc982c ed: check addr bounds 2019-07-14 09:04:51 -04:00
Virgil Dupras
c811d5330c apps/ed: add support for addr ranges 2019-07-13 22:09:17 -04:00
Virgil Dupras
2d9f74c2af apps/ed: refactoring 2019-07-13 21:08:16 -04:00
Virgil Dupras
8cf68dc7ad apps/ed: handle +[n] and -[n] addresses 2019-07-13 16:30:30 -04:00
Virgil Dupras
951dd2206d apps/ed: add the concept of "current line" 2019-07-13 15:28:44 -04:00
Virgil Dupras
e0f2a71dfc apps/ed: print specified line 2019-07-13 14:01:20 -04:00
Virgil Dupras
6dbbfa837d apps/ed: add (dummy) line number processing
Starting to feel interactive...
2019-07-13 11:53:30 -04:00
Virgil Dupras
3491c26132 apps/ed: start implementing I/O 2019-07-13 11:29:06 -04:00
Virgil Dupras
3d474c9121 apps/ed: first steps 2019-07-13 09:57:37 -04:00
Virgil Dupras
54b0602710 zasm: add support for RES and SET 2019-07-02 14:12:29 -04:00
Virgil Dupras
3a8b5108f7 zasm: make .fill support word arguments 2019-07-01 10:56:03 -04:00
Virgil Dupras
9fb77054c0 Update docs w.r.t. its relationship with scas 2019-06-19 13:34:06 -04:00
Virgil Dupras
7cdc288ef2 zasm: print progress indicator while assembling 2019-06-19 11:42:39 -04:00
Virgil Dupras
6516ff7212 zasm: add support for "XOR n" and "SLA r" 2019-06-18 14:24:43 -04:00
Virgil Dupras
5e31de0bac apps/memt: new app 2019-06-16 20:53:21 -04:00
Virgil Dupras
3e7d181d3c zasm: properly raise error on bas ioPutC calls 2019-06-15 20:01:17 -04:00
Virgil Dupras
4327153ffd zasm: fix include EOF detection
That was an interesting bug. It didn't cause a problem in emulation, but
in an RC2014 on an SD card, an include that didn't end with two newlines
would cause an infinite loop.
2019-06-15 15:50:27 -04:00
Virgil Dupras
92a04f4627 sdc: support 24-bit addressing
Needed if we want to compile the kernel and zasm from within a SD card.
I didn't go straight for 32-bit because it was significantly more
complex and 24-bit give us 16M. Enough to go on for a while...
2019-06-15 13:41:20 -04:00
Virgil Dupras
e7c07cdd9a apps/at28w: fix argument byte order 2019-06-14 21:11:45 -04:00
Virgil Dupras
93981e00eb zasm: fix include line no in error reports
Weren't properly saved during local pass back and forth.
2019-06-14 20:26:39 -04:00
Virgil Dupras
c613f7b0ee recipes/rc2014/eeprom: fix broken a28w args passing
That's why the command seemed slow! It's much faster than I thought.
2019-06-14 16:30:01 -04:00
Virgil Dupras
817636242a Add at28w app and recipe
This allows us to write to an AT28 EEPROM from within collapse os.
2019-06-14 14:15:30 -04:00
Virgil Dupras
145b48efb7 Add apps/sdct
A new app to stress test the SD card driver. Also, accompanying this
commit, changes solidifying the SD card driver so that stress tests
actually pass :)
2019-06-10 15:54:15 -04:00
Virgil Dupras
c18d42f08b fs: further adjust to previous blkdev refactoring
Previous refacoring broke all seek/tell within fs. fs handles now lost
the responsibility to keep track of current position. It's blkdev's job.
2019-06-04 20:45:01 -04:00
Virgil Dupras
ae028e3a86 blockdev: make implementors "random access"
This huge refactoring remove the Seek and Tell routine from blockdev
implementation requirements and change GetC and PutC's API so that they
take an address to read and write (through HL/DE) at each call.

The "PTR" approach in blockdev implementation was very redundant from
device to device and it made more sense to generalize. It's possible
that future device aren't "random access", but we'll be able to add more
device types later.

Another important change in this commit is that the "blockdev handle" is
now opaque. Previously, consumers of the API would happily call routines
directly from one of the 4 offsets. We can't do that any more. This
makes the API more solid for future improvements.

This change forced me to change a lot of things in fs, but overall,
things are now simpler. No more `FS_PTR`: the "device handle" now holds
the active pointer.

Lots, lots of changes, but it also feels a lot cleaner and solid.
2019-06-04 15:36:20 -04:00
Virgil Dupras
465da6a79d zasm: add .out directive 2019-06-03 11:13:31 -04:00
Virgil Dupras
04bf2117b2 tools/emul: re-organize .h files
What used to be `tools/emul/user.h` was in fact specific to zasm, so I
moved it there.

To avoid name confusion, I renamed what used to be kernel.h and user.h
to kernel-bin.h and user-bin.h.
2019-06-03 08:12:44 -04:00
Virgil Dupras
21c677a950 Make parseArgs not expect a leading space 2019-06-02 14:46:07 -04:00
Virgil Dupras
f8bd8eeaaf Make userspace parse args the same way the shell does 2019-06-02 14:05:20 -04:00
Virgil Dupras
7c191fd978 fs: standardize file handle routine argument to IX
Using HL/DE was awkward and error-prone.
2019-05-31 14:28:06 -04:00