Virgil Dupras
ab578159b7
avra: refactor args parsing
...
This costs us a bit of space for now but should make things a lot
simpler down the road, especially with "alias ops" which are simple
syntactic sugar for another op.
2019-12-14 15:17:55 -05:00
Virgil Dupras
3f3dd9141e
basic: allow multiple args in print
2019-11-20 21:02:11 -05:00
Virgil Dupras
8d46895dd3
lib/parse: decimal ending with a whitespace are now valid
...
Also, make empty strings be parsed as invalid by parseDecimal.
2019-11-13 22:10:06 -05:00
Virgil Dupras
7274dccbe7
Move ASCII consts to ascii.h
...
And made them shorter in name. The new ascii.h file allow reuse in userspace
code.
2019-11-13 20:38:06 -05:00
Virgil Dupras
b745f49186
Rename blockdev's API routines to GetB/PutB
...
The goal is to avoid mixing those routines with "character devices"
(acia, vpd, kbd) which aren't block devices and have routines that
have different expectations.
This is a first step to fixing #64 .
2019-10-30 16:59:35 -04:00
Virgil Dupras
ea8477bb91
zasm: accept whitespaces before separating comma
2019-05-19 10:39:29 -04:00
Virgil Dupras
9f6ebf538d
zasm: can assemble zasm/tok.asm!
2019-05-18 20:31:52 -04:00
Virgil Dupras
ae2187ad06
zasm: avoid ';' literal
...
Simplifies comment stripping through sed.
2019-05-17 19:49:37 -04:00
Virgil Dupras
21c49d80cf
zasm: allow single quote to contain whitespace
2019-05-17 17:22:16 -04:00
Virgil Dupras
556be3f0ce
zasm: allow for whitespace inside string literals
...
Also, increase scratchpad size. It wasn't big enough for some
expressions in shell unit.
2019-05-17 16:44:08 -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
072aad775a
zasm: don't match prefixes in symFind
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Only match when full names match.
2019-05-17 13:14:16 -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
67803f6cb5
zasm: don't upcase char literals
2019-05-14 15:42:15 -04:00
Virgil Dupras
6d4515cd03
zasm: little code reorganisation
2019-05-10 21:19:34 -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
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
79b5c701f6
zasm: move token variables from tok.asm into main.asm
2019-04-30 17:04:42 -04:00
Virgil Dupras
a7635cb1ea
zasm: allow blank lines in asm source code
2019-04-30 16:24:45 -04:00
Virgil Dupras
eb5c974573
zasm: allow leading whitespace in parsed lines
2019-04-30 16:08:56 -04:00
Virgil Dupras
57c3dfece8
zasm: assemble multiple lines at once
2019-04-30 15:51:39 -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
