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collapseos
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1699 Commits

Author SHA1 Message Date
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
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 
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 
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 
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 
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 
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 
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 
This also introduces the "seek" shell command.
 2019-04-16 08:36:26 -04:00
Virgil Dupras af13b0bd00 Code consolidation 2019-04-16 08:35:44 -04:00
Virgil Dupras ce49fc15d0 blockdev: reorganize routine pointers 
Also, add dummy seek reoutine.
 2019-04-15 21:56:15 -04:00
Virgil Dupras a5addc989c shell: rename seek to mptr 
going to use `seek` for block devices
 2019-04-15 20:42:12 -04:00
Virgil Dupras c996da8ac8 shell: add error codes to cmds 2019-04-15 20:38:25 -04:00
Virgil Dupras 12c23f52e0 Add blockdev part 
Also, add the ability for parts to define extra shell commands.
 2019-04-15 16:53:11 -04:00
Virgil Dupras 4600b5299c shell: place cmd metadata next to the routine 
This will facilitate the inclusion of extra commands other parts might
want to define.
 2019-04-15 15:08:00 -04:00
Virgil Dupras f571664853 Improve user guide 2019-04-15 13:24:20 -04:00
Virgil Dupras 9aae4ea040 Add user guide 2019-04-15 12:10:41 -04:00
Virgil Dupras 26b125b337 shell: add shellParseArgs 
Replaces individual command parsing. Quite a big and complex chunk of
code, but makes each command much simpler.
 2019-04-14 23:14:07 -04:00
Virgil Dupras 83f63c7146 shell: add call command 2019-04-14 17:01:28 -04:00
Virgil Dupras e4c23b4270 shell: echo types letters right away 
Easier to use this way...
 2019-04-14 15:18:41 -04:00
Virgil Dupras 942ff37bf8 shell: implement load command 2019-04-14 14:53:16 -04:00
Virgil Dupras 461c09f1e5 Decouple shell from acia 2019-04-14 14:24:29 -04:00
Virgil Dupras 8ccddbcb0e Separate shell and acia input buffers 
They serve a different purpose. The goal of the ACIA buffer is to ensure
that we don't miss an input. The goal of the shell buffer is to wait
until the user presses return.

The ACIA buffer has been moved to shell and replaced with a circular
buffer, a more appropriate data structure for this kind of purpose.

Also, introduce `aciaGetC`.
 2019-04-14 14:04:31 -04:00
Virgil Dupras 902c6a5dd3 shell: add count arg to peek 
Also, fix seek reversed endianness.
 2019-04-14 11:54:18 -04:00
Virgil Dupras e4e7db8e23 shell: cleanup 2019-04-14 11:22:45 -04:00
Virgil Dupras 21168f6c4e shell: implement seek and peek 
This introduces `core.asm` which includes routines used by other parts.
 2019-04-14 11:17:38 -04:00
Virgil Dupras 9580cc3994 shell: add "seek" and "peek" dummy commands 
This change introduces a command name matching algo.
 2019-04-13 22:39:28 -04:00
Virgil Dupras 6bb454232a Extract "acia.asm" from shell 
Also, come up with a way to make parts play well together memory-wise.
 2019-04-13 16:01:20 -04:00
Virgil Dupras ac22a206ae shell: handle inputs with interrupts 2019-04-13 15:02:29 -04:00
Virgil Dupras 358c551bcc shell: add input routine 2019-04-12 21:28:50 -04:00
Virgil Dupras 89e4edfa52 Add parts/platforms 2019-04-12 15:53:05 -04:00
Virgil Dupras 7bf3e2f71e Let's get the ball rolling! 2019-04-12 15:16:12 -04:00
Virgil Dupras 503089a41c Initial commit 2019-03-06 14:28:56 -05:00