izaya/collapseos
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Commit Graph

40 Commits

Author SHA1 Message Date
Virgil Dupras
d76dd54f4b zasm: add ERR_OVFL 2019-05-27 12:12:21 -04:00
Virgil Dupras
f9118ef88e xasm: expand ERR_BAD_ARG condition 2019-05-27 12:05:42 -04:00
Virgil Dupras
e1e6d52fea zasm: add ERR_BAD_FMT 2019-05-27 11:58:12 -04:00
Virgil Dupras
412b3f374a zasm: add ERR_BAD_ARG 2019-05-27 11:22:38 -04:00
Virgil Dupras
acddb045a5 zasm: add support for .org directive 2019-05-19 14:40:42 -04:00
Virgil Dupras
6cbce0533a zasm: can now assemble zasm/instr.asm! 2019-05-19 10:40:45 -04:00
Virgil Dupras
44abc79850 zasm: add support for SBC HL, ss 2019-05-19 09:54:02 -04:00
Virgil Dupras
c01816b055 zasm: make instr a bit more zasm-friendly 
But we're still at a certain distance from assembling it with zasm:
we're busting the 0x100 symbol limit.
 2019-05-18 21:07:35 -04:00
Virgil Dupras
2ce6b61964 zasm: add support for RLC r and RRC r 2019-05-18 19:59:31 -04:00
Virgil Dupras
84090dcd14 zasm: add support for RL r and RR r 
Also, make zasm assemble zasm/util.asm again!
 2019-05-18 15:41:21 -04:00
Virgil Dupras
068e4327ec zasm: fix false truncation error on "-" expressions 2019-05-18 14:51:11 -04:00
Virgil Dupras
650eec23de zasm: add LD r, (IX/Y+d) support 2019-05-17 23:01:29 -04:00
Virgil Dupras
157ac03e25 zasm: can now assemble zasm/util.asm! 2019-05-17 20:47:43 -04:00
Virgil Dupras
d58cf122a8 zasm: fix regression with lowercase (ix+d) parsing 2019-05-17 19:32:58 -04:00
Virgil Dupras
2a97966bdc zasm: add LD IX/IY, NN instructions 2019-05-17 17:43:42 -04:00
Virgil Dupras
b0318f4891 zasm: make instr unt write directly to ioPutC 
Couldn't get rid of instrUpcode though, too complicated.
 2019-05-17 15:35:49 -04:00
Virgil Dupras
ad7428e471 zasm: make io unit handle PC and output suppression 2019-05-17 14:58:16 -04:00
Virgil Dupras
6547e83f20 zasm: improve comma processing 
We don't treat "," exactly as a whitespace anymore. We have specific
processing for it.
 2019-05-17 14:34:38 -04:00
Virgil Dupras
3a91e9eb46 zasm: add support for PUSH/POP IX/IY 2019-05-17 14:00:37 -04:00
Virgil Dupras
c1b09123f1 zasm: add support for RETI and RETN 2019-05-17 13:21:49 -04:00
Virgil Dupras
7083116379 zasm: remove JUMP_ prefixes 
They serve no purpose and make the code less flexible.
 2019-05-17 09:50:11 -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
33a1ee250d zasm: rename curOutputOffset to ZASM_PC 2019-05-15 13:31:49 -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
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
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
95f53d0ce3 zasm: support symbols in .dw directive 2019-05-10 21:17:19 -04:00
Virgil Dupras
b87feac785 zasm: add support for labels! 2019-05-09 21:21:08 -04:00
Virgil Dupras
f9ae5ca46b zasm: simplify readWord calling 
It always reads in the scratchpad with the same max size. No need for
DE-dancing anymore.
 2019-05-01 14:19:43 -04:00
Virgil Dupras
dde5161fc1 zasm: add support for ".db" directive 2019-05-01 11:26:41 -04:00
Virgil Dupras
a00bc8cc4b zasm: remove the "token" variable 2019-04-30 22:32:12 -04:00
Virgil Dupras
5fd9b7812c zasm: make each token type parse the remaining of line directly 2019-04-30 21:55:18 -04:00
Virgil Dupras
a7693ffd86 zasm: still inching toward directives 2019-04-30 21:40:22 -04:00
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
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