Virgil Dupras
23f0dc18ca
zasm emul: add tooling for includes fsdev
...
On build, pack `parts/z80` into a CFS and embed it into the emulated
zasm executable as an fsdev. This will allow for the upcoming include
directive to have something to go to.
For now, this is useless except for inflating the emulated zasm's size.
2019-05-16 12:07:57 -04:00
Virgil Dupras
22c7eeaa5d
Move apps/zasm/tests to tools/tests/zasm
...
This 'apps' folder is going to disappear. Everything is going to be a
"part" to be assembled through recipes. 'apps' has no meaning.
2019-05-16 11:23:15 -04:00
Virgil Dupras
0ae91e55ec
zasm: big local symbols overhaul
2019-05-16 08:26:00 -04:00
Virgil Dupras
e9244b80ee
zasm: big I/O overhaul
...
Instead of buffering input in memory one line at a time, we go in "just
in time" mode and always read contents directly from I/O, without
buffering.
It forces us to implement a `ioPutback` scheme, but on the other hand it
greatly simplifies cases where multiple tokens are on the same line
(when a label is directly followed by an instruction).
The end result feels much more solid and less hackish.
2019-05-16 07:53:42 -04:00
Virgil Dupras
34ff0a6c2a
zasm: consolidate code
2019-05-15 15:27:33 -04:00
Virgil Dupras
a2b5b1efab
zasm: add one layer of indirection in symbol registry
...
We'll need it for an upcoming "local labels" registry.
2019-05-15 14:30:41 -04:00
Virgil Dupras
fa28d64278
zasm: change ioRewind to ioSeek
...
Will need it soon.
2019-05-15 13:41:56 -04:00
Virgil Dupras
33a1ee250d
zasm: rename curOutputOffset to ZASM_PC
2019-05-15 13:31:49 -04:00
Virgil Dupras
a994867a86
Wohoo! zasm assembles core.asm!!!
2019-05-14 16:50:35 -04:00
Virgil Dupras
b0218349ff
zasm: support multiple instructions on single line
2019-05-14 16:45:56 -04:00
Virgil Dupras
23fd493013
core: make a bit more zasm-friendly
2019-05-14 16:42:44 -04:00
Virgil Dupras
1010e8372c
zasm: add support for subtractions in expressions
2019-05-14 16:39:10 -04:00
Virgil Dupras
67803f6cb5
zasm: don't upcase char literals
2019-05-14 15:42:15 -04:00
Virgil Dupras
72d2a8f073
zasm: add support for + expressions
2019-05-14 15:26:29 -04:00
Virgil Dupras
99a7c94c9f
zasm: make "double parsing" a bit more solid
...
It was previously skipped on a local label.
2019-05-14 14:35:34 -04:00
Virgil Dupras
7972b92be1
zasm: refactoring
2019-05-14 14:32:12 -04:00
Virgil Dupras
2c0166814f
zasm: support inline labels
...
That is, labels with code following right afterwards.
2019-05-14 14:10:20 -04:00
Virgil Dupras
a486a2a81e
zasm: support char literals
2019-05-14 13:53:12 -04:00
Virgil Dupras
2de69ee7cd
zasm: add support for local labels
2019-05-13 20:23:10 -04:00
Virgil Dupras
17dbee6a49
zasm: deduplicate code
2019-05-13 19:47:34 -04:00
Virgil Dupras
746c86cbf8
zasm: make getSymVal not responsible for calling symFind
...
With local labels, these two will have to be decoupled.
2019-05-13 16:53:52 -04:00
Virgil Dupras
c9deac599e
zasm: add support for LD r, r' instructions
2019-05-13 16:38:09 -04:00
Virgil Dupras
878bc2919f
zasm: add support for relative labels
2019-05-12 22:07:21 -04:00
Virgil Dupras
1e3982d3ab
zasm: make DE indicate the last line to be read
...
Facilitates debugging
2019-05-12 21:44:59 -04:00
Virgil Dupras
dd6fa5d38b
zasm: properly propagate error conditions
...
Gives clearer output on errors. Easier debugging...
2019-05-12 21:31:11 -04:00
Virgil Dupras
86cad39de4
zasm: fix wrong logic in .numberTruncated error condition
...
`xor c` didn't do what I thought it did at the time. Newbie mistake,
there are probably a lot like this scattered around...
2019-05-12 21:23:24 -04:00
Virgil Dupras
71cbd24e1f
Add filesystem docs
2019-05-12 16:06:27 -04:00
Virgil Dupras
4f44d3de63
parts/z80/fs: add "fopn" command
2019-05-12 15:38:58 -04:00
Virgil Dupras
9b4b907236
tools/emul/shell: fix srong SeekL return value
...
Also, add warning on attempts to write to ROM.
2019-05-12 14:32:24 -04:00
Virgil Dupras
51bab80a4c
parts/z80/fs: fix fsInitMeta writing to ROM
2019-05-12 14:31:35 -04:00
Virgil Dupras
1ea5bedb4f
blockdev: fix broken blkSeek/blkTell
...
scas didn't warn about this, but it seems that `jr` calls were out of
range. Seek and Tell was broken. Replacing `jr` with `jp` does the
trick.
2019-05-12 13:57:37 -04:00
Virgil Dupras
c77d96da22
blockdev: clarify routines specs
2019-05-12 11:45:08 -04:00
Virgil Dupras
a86738ae84
tools/emul/shell: add filesystem support
...
With the help of the newly-introduced cfspack tool, we can mount a
filesystem in our emulated shell and play around. Read-only for now.
Unpacking incoming.
2019-05-12 11:20:31 -04:00
Virgil Dupras
d6f5cf5b90
zasm: fix first pass inversion bug
...
Also, confirm in tests that we can refer to other symbols in `.equ`.
2019-05-12 08:50:29 -04:00
Virgil Dupras
6aa53afabc
zasm: add memdump mode
2019-05-12 08:49:59 -04:00
Virgil Dupras
89848dbfe2
zasm: add support for .equ
2019-05-11 22:11:05 -04:00
Virgil Dupras
6d4515cd03
zasm: little code reorganisation
2019-05-10 21:19:34 -04:00
Virgil Dupras
95f53d0ce3
zasm: support symbols in .dw directive
2019-05-10 21:17:19 -04:00
Virgil Dupras
c000d5cfb1
zasm: support forward label references!
2019-05-10 21:14:46 -04:00
Virgil Dupras
c239ec7dea
zasm: read input in two passes
2019-05-10 20:32:05 -04:00
Virgil Dupras
6a804a9c64
zasm: buffer stdin in emulator
...
Also, add a port for rewinding stdin.
2019-05-10 19:55:01 -04:00
Virgil Dupras
34ee91a0d7
zasm: use blkdev IDs as input and output
...
This will soon allow use to seek and tell on input, which is necessary
for a second pass which is necessary for forward symbol references.
This require making `blkSel` a bit more flexible. Rather than having one
global selected blkdev, each app can select its own, in its own memory
space.
2019-05-10 19:33:34 -04:00
Virgil Dupras
5a6078df4d
zasm: add support for hex literals
2019-05-09 22:14:11 -04:00
Virgil Dupras
b87feac785
zasm: add support for labels!
2019-05-09 21:21:08 -04:00
Virgil Dupras
1c17dcb7a2
zasm: consolidate code
2019-05-09 15:55:29 -04:00
Virgil Dupras
d34aff67bb
zasm: Read from and write to streams instead of memory
2019-05-09 15:36:03 -04:00
Virgil Dupras
7f27d63c19
Move apps/zasm/emul to tools/emul
2019-05-09 14:09:40 -04:00
Virgil Dupras
193e6e066c
Add tools/emul
2019-05-09 12:58:41 -04:00
Virgil Dupras
02808572e6
Update docs
2019-05-09 10:48:36 -04:00
Virgil Dupras
d8bc9c2bdd
parts/z80/sdc: implement blockdev's GetC
2019-05-09 10:47:57 -04:00
