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
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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
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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
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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
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No consumer yet, but it's coming...
2019-04-22 21:52:33 -04:00
Virgil Dupras
1bcceb949c
blockdev: add Tell and fix blkGetCW
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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
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The opposite of "load"
2019-04-22 16:01:31 -04:00
Virgil Dupras
b4694225c5
blockdev: change GetC API
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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"
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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
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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
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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
Virgil Dupras
1f94b6c3f7
zasm: can now match all "constant" primary opcodes
2019-04-16 20:32:30 -04:00
Virgil Dupras
fc0cdede55
Move print(n)str from core to shell
...
These routines had hardcoded references to ACIA and didn't belong to the
core.
2019-04-16 19:45:05 -04:00
Virgil Dupras
453cf3d74a
zasm: start matching args
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We now properly match arg-less operations.
2019-04-16 19:40:37 -04:00
Virgil Dupras
b3af6e0115
zasm: reuse code from core
2019-04-16 17:00:19 -04:00
Virgil Dupras
9acca52e44
zasm: begin parsing with easy pickings
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Single opcodes that yield constants. "echo ret | zasm" yields 0xc9.
2019-04-16 16:49:47 -04:00
Virgil Dupras
88cee235b1
zasm: have a whole kernel in emulation instead of a simple wrapper
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zasm is going to need to call to kernel code...
2019-04-16 14:26:45 -04:00
Virgil Dupras
43c1005d61
zasm: implement stdin/stdout in emulator
2019-04-16 13:59:19 -04:00
Virgil Dupras
1ae2331763
Add zasm app
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For now, only a dummy app, but it's emulated properly with libz80.
Exciting times!
2019-04-16 13:36:57 -04:00
Virgil Dupras
ff99062d5b
Move RC2014 recipe in its own folder
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Also, remove `parts/platforms`. It makes no sense. Only recipes make
sense.
2019-04-16 11:50:16 -04:00
Virgil Dupras
6597e8a75a
doc: add emulate section
2019-04-16 11:37:04 -04:00
Virgil Dupras
056de2b19d
doc: add glue code section
2019-04-16 11:26:58 -04:00
Virgil Dupras
7060ee4dc5
Add Status section to README
2019-04-16 10:52:29 -04:00
Virgil Dupras
6c4489d2a3
Add blockdev doc
2019-04-16 10:40:51 -04:00
Virgil Dupras
21eb64f751
blockdev: remove one layer of indirection
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The approach used for shell extra commands also works for blockdev. Much
simpler and tighter this way.
2019-04-16 10:17:25 -04:00
Virgil Dupras
a27da6f41a
add mmap part
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This also introduces the "seek" shell command.
2019-04-16 08:36:26 -04:00