Virgil Dupras
056bbde710
zasm: add support for IX/IY with displacement
5 jaren geleden
Virgil Dupras
14a410b024
zasm: extract tok.asm from zasm.asm
5 jaren geleden
Virgil Dupras
89972ca210
zasm: add a bunch of instructions
5 jaren geleden
Virgil Dupras
115dc18971
zasm: add support for extended instructions
5 jaren geleden
Virgil Dupras
70f61ec451
zasm: a bit of refactoring
5 jaren geleden
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!
5 jaren geleden
Virgil Dupras
8ce528c752
zasm: add a bunch of instructions
5 jaren geleden
Virgil Dupras
76caf944dd
zasm: add support for the "e" arg type (djnz, jr)
5 jaren geleden
Virgil Dupras
c5c8369ce9
zasm: Add support for (NN) constants
5 jaren geleden
Virgil Dupras
e1d6178457
zasm: add a bunch of instructions
5 jaren geleden
Virgil Dupras
7996a9997a
zasm: add support for numerical constants
5 jaren geleden
Virgil Dupras
3fe5eb3e60
zasm: add a bunch of primary instructions
5 jaren geleden
Virgil Dupras
a7dc1e7b4a
zasm: make "RET cc" work
5 jaren geleden
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`.
5 jaren geleden
Virgil Dupras
9b556c8883
zasm: support "special" groups and groups in arg2
5 jaren geleden
Virgil Dupras
a7538473e4
zasm: add support for variable arguments
5 jaren geleden
Virgil Dupras
38e40bfc16
zasm: make the instruction table fixed
Looping is easier
5 jaren geleden
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.
5 jaren geleden
Virgil Dupras
1f94b6c3f7
zasm: can now match all "constant" primary opcodes
5 jaren geleden
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.
5 jaren geleden
Virgil Dupras
453cf3d74a
zasm: start matching args
We now properly match arg-less operations.
5 jaren geleden
Virgil Dupras
b3af6e0115
zasm: reuse code from core
5 jaren geleden
Virgil Dupras
9acca52e44
zasm: begin parsing with easy pickings
Single opcodes that yield constants. "echo ret | zasm" yields 0xc9.
5 jaren geleden
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...
5 jaren geleden
Virgil Dupras
43c1005d61
zasm: implement stdin/stdout in emulator
5 jaren geleden
Virgil Dupras
1ae2331763
Add zasm app
For now, only a dummy app, but it's emulated properly with libz80.
Exciting times!
5 jaren geleden
Virgil Dupras
ff99062d5b
Move RC2014 recipe in its own folder
Also, remove `parts/platforms`. It makes no sense. Only recipes make
sense.
5 jaren geleden
Virgil Dupras
6597e8a75a
doc: add emulate section
5 jaren geleden
Virgil Dupras
056de2b19d
doc: add glue code section
5 jaren geleden
Virgil Dupras
7060ee4dc5
Add Status section to README
5 jaren geleden
Virgil Dupras
6c4489d2a3
Add blockdev doc
5 jaren geleden
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.
5 jaren geleden
Virgil Dupras
a27da6f41a
add mmap part
This also introduces the "seek" shell command.
5 jaren geleden
Virgil Dupras
af13b0bd00
Code consolidation
5 jaren geleden
Virgil Dupras
ce49fc15d0
blockdev: reorganize routine pointers
Also, add dummy seek reoutine.
5 jaren geleden
Virgil Dupras
a5addc989c
shell: rename seek to mptr
going to use `seek` for block devices
5 jaren geleden
Virgil Dupras
c996da8ac8
shell: add error codes to cmds
5 jaren geleden
Virgil Dupras
12c23f52e0
Add blockdev part
Also, add the ability for parts to define extra shell commands.
5 jaren geleden
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.
5 jaren geleden
Virgil Dupras
f571664853
Improve user guide
5 jaren geleden
Virgil Dupras
9aae4ea040
Add user guide
5 jaren geleden
Virgil Dupras
26b125b337
shell: add shellParseArgs
Replaces individual command parsing. Quite a big and complex chunk of
code, but makes each command much simpler.
5 jaren geleden
Virgil Dupras
83f63c7146
shell: add call command
5 jaren geleden
Virgil Dupras
e4c23b4270
shell: echo types letters right away
Easier to use this way...
5 jaren geleden
Virgil Dupras
942ff37bf8
shell: implement load command
5 jaren geleden
Virgil Dupras
461c09f1e5
Decouple shell from acia
5 jaren geleden
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`.
5 jaren geleden
Virgil Dupras
902c6a5dd3
shell: add count arg to peek
Also, fix seek reversed endianness.
5 jaren geleden
Virgil Dupras
e4e7db8e23
shell: cleanup
5 jaren geleden
Virgil Dupras
21168f6c4e
shell: implement seek and peek
This introduces `core.asm` which includes routines used by other parts.
5 jaren geleden