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collapseos
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289 Commits

Author SHA1 Message Date
Virgil Dupras 1ffe05dd09 zasm: creep in the notion of directive 2019-04-30 21:27:44 -04:00
Virgil Dupras 8241298c8f zasm: code consolidation 2019-04-30 21:13:37 -04:00
Virgil Dupras 98ad223ee1 zasm: introduce the concept of instruction ID 
It will make tokenization cleaner and it also makes the instruction
table significantly more compact.
 2019-04-30 20:26:41 -04:00
Virgil Dupras 79b5c701f6 zasm: move token variables from tok.asm into main.asm 2019-04-30 17:04:42 -04:00
Virgil Dupras a7635cb1ea zasm: allow blank lines in asm source code 2019-04-30 16:24:45 -04:00
Virgil Dupras eb5c974573 zasm: allow leading whitespace in parsed lines 2019-04-30 16:08:56 -04:00
Virgil Dupras 57c3dfece8 zasm: assemble multiple lines at once 2019-04-30 15:51:39 -04:00
Virgil Dupras 2653826dff zasm: move zasm.asm to instr.asm and create main.asm 
instr.asm is for single instruction assembly.
 2019-04-30 13:52:14 -04:00
Virgil Dupras 175e1328e7 zasm: consolidate 
* Build emulated zasm statically
* Improve comments in zasm.asm
* Fix build
* Use unsetZ from core
 2019-04-30 13:45:31 -04:00
Virgil Dupras 055e0d7a31 Split parts in two: z80 and avr 
Also, clarify the role of recipes.
 2019-04-25 16:03:45 -04:00
Virgil Dupras a391f85c00 fs: implement GetC, PutC, Seek and Tell on file handle 
Very coarse, but I got them to work.
 2019-04-23 19:42:10 -04:00
Virgil Dupras f00334ec89 fs: add private "blk" routines 
This way, we can interact with the mounted FS even when we change the
selected blkdev.
 2019-04-23 15:50:26 -04:00
Virgil Dupras 3ba0a707e7 blockdev: remove a layer of indirection in block routine storage 
This will facilitate "copying" blk selection in FS.
 2019-04-23 15:03:23 -04:00
Virgil Dupras ad217c018e fs: implement block reuse in fsAlloc 2019-04-23 14:00:54 -04:00
Virgil Dupras 684f083e8e fs: add "fdel" command 2019-04-23 13:29:16 -04:00
Virgil Dupras 5eca14d49a fs: implement fsNext 
This allows more than one file to be allocated. `fls` properly lists
multiple files.
 2019-04-23 12:04:09 -04:00
Virgil Dupras 1a6d285d2d fs: always read whole block meta in memory to avoid seeking 2019-04-23 10:54:56 -04:00
Virgil Dupras c0dbee78de New part: fs 
Very incomplete, but if you play your cards right, you can, with the
shell:

1. Create a new CFS
2. Mount it
3. Allocate a file with an arbitrary name
4. Have it listed with `fls`
 2019-04-23 09:37:22 -04:00
Virgil Dupras 07fde3cab5 blockdev: move the new seek mode logic into the seek command 
It wasn't a good idea to complicate all blockdev impls with complicated
seeks. Let's just stay in absolute mode for now.
 2019-04-23 08:33:32 -04:00
Virgil Dupras f87cd0485a blockdev: make "seek" print out its resulting position 
Also, extract commands into blockdev_cmds to avoid making blockdev
dependent on stdio.
 2019-04-22 22:54:23 -04:00
Virgil Dupras 5071ee9f40 Extract "stdio" part from shell 2019-04-22 22:41:37 -04:00
Virgil Dupras 8b7faa1f02 blockdev: add "type" argument to blkSeek 
Allows seeking forward, backwards, to the beginning, to the end.
 2019-04-22 22:28:35 -04:00
Virgil Dupras d3d229a918 shell: support string arguments 
No consumer yet, but it's coming...
 2019-04-22 21:52:33 -04:00
Virgil Dupras 1bcceb949c blockdev: add Tell and fix blkGetCW 
Calling on blkGetC repeatedly was somehow very unstable and often
failed. I didn't pinpoint exactly why, but keeping the call addr around
and calling that instead seems like a better idea anyway.
 2019-04-22 17:15:59 -04:00
Virgil Dupras 196d22c4ab shell: add "save" command 
The opposite of "load"
 2019-04-22 16:01:31 -04:00
Virgil Dupras b4694225c5 blockdev: change GetC API 
Instead of waiting, GetC always return immediately, with Z indicating if
something was fetched. The "wait" loop is implemented by the called (and
in the new `blkGetCW`).

This simplifies out-of-bounds verifications for storage blockdevs.
 2019-04-22 14:26:16 -04:00
Virgil Dupras 63afa5798b zasm: add a bunch of instructions 2019-04-21 14:49:33 -04:00
Virgil Dupras 8594084b06 zasm: simplify code 2019-04-21 14:23:24 -04:00
Virgil Dupras 93eb262083 zasm: add a bunch of instructions 2019-04-21 14:12:06 -04:00
Virgil Dupras e9e2f30fc5 zasm: add support for BIT 2019-04-21 13:41:55 -04:00
Virgil Dupras e073fbff79 zasm: add support for "special instructions" 
Let's not create complex rules for exception cases.
 2019-04-21 12:58:28 -04:00
Virgil Dupras ecf7d7fbd6 zasm: add a bunch of instructions 2019-04-21 11:49:20 -04:00
Virgil Dupras 056bbde710 zasm: add support for IX/IY with displacement 2019-04-21 10:55:47 -04:00
Virgil Dupras 14a410b024 zasm: extract tok.asm from zasm.asm 2019-04-21 09:25:52 -04:00
Virgil Dupras 89972ca210 zasm: add a bunch of instructions 2019-04-20 23:03:13 -04:00
Virgil Dupras 115dc18971 zasm: add support for extended instructions 2019-04-20 22:37:38 -04:00
Virgil Dupras 70f61ec451 zasm: a bit of refactoring 2019-04-20 20:35:45 -04:00
Virgil Dupras f6dddaa380 zasm: add automated tests and fix a bunch of bugs 
A python script generates all possibilities for all supported
instructions and compare zasm output with scas. After having fixed a
couple of bugs, all tests pass!
 2019-04-17 21:03:20 -04:00
Virgil Dupras 8ce528c752 zasm: add a bunch of instructions 2019-04-17 17:08:45 -04:00
Virgil Dupras 76caf944dd zasm: add support for the "e" arg type (djnz, jr) 2019-04-17 16:26:04 -04:00
Virgil Dupras c5c8369ce9 zasm: Add support for (NN) constants 2019-04-17 16:04:24 -04:00
Virgil Dupras e1d6178457 zasm: add a bunch of instructions 2019-04-17 15:25:35 -04:00
Virgil Dupras 7996a9997a zasm: add support for numerical constants 2019-04-17 14:47:42 -04:00
Virgil Dupras 3fe5eb3e60 zasm: add a bunch of primary instructions 2019-04-17 11:37:49 -04:00
Virgil Dupras a7dc1e7b4a zasm: make "RET cc" work 2019-04-17 11:06:51 -04:00
Virgil Dupras 279f6e0ad8 zasm: invert emulator io_write() handling 
This facilitates debugging. To know the value of `A` at any point,
you can do `out (0), a`. The number of bytes in the output will be the
value of `A`.
 2019-04-17 10:34:30 -04:00
Virgil Dupras 9b556c8883 zasm: support "special" groups and groups in arg2 2019-04-17 10:34:10 -04:00
Virgil Dupras a7538473e4 zasm: add support for variable arguments 2019-04-17 08:23:01 -04:00
Virgil Dupras 38e40bfc16 zasm: make the instruction table fixed 
Looping is easier
 2019-04-16 22:46:04 -04:00
Virgil Dupras 8cd400651a zasm: read each argument immediately insto an argspec 
Previously, we would go the other way around: match all available
argspecs to raw argument strings. It's much better to go the other way
around because we can "reduce" each argument much sooner. That will be
important when we start to support constants and expressions.
 2019-04-16 22:40:07 -04:00