10 Commits

Author	SHA1	Message	Date
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	72d2a8f073	zasm: add support for + expressions	2019-05-14 15:26:29 -04:00
Virgil Dupras	a486a2a81e	zasm: support char literals	2019-05-14 13:53:12 -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	89848dbfe2	zasm: add support for .equ	2019-05-11 22:11:05 -04:00
Virgil Dupras	95f53d0ce3	zasm: support symbols in .dw directive	2019-05-10 21:17:19 -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	6811d98618	zasm: add support for the ".dw" directive	2019-05-01 14:07:01 -04:00
Virgil Dupras	dde5161fc1	zasm: add support for ".db" directive	2019-05-01 11:26:41 -04:00
Virgil Dupras	a7693ffd86	zasm: still inching toward directives	2019-04-30 21:40:22 -04:00