Commit Graph

7 Commits

Author SHA1 Message Date
Virgil Dupras e4a4a9800d z80: Use BC as IP register instead of IY
It's a bit more inconvenient in terms of register protection (BC
is much more generally useful than IY), but it makes tight spots
such as next and execute much faster, so I think it's worth it.
2020-07-06 23:31:00 -04:00
Virgil Dupras daeb3b3c69 Extract (n) code from stable ABI 2020-07-05 14:16:24 -04:00
Virgil Dupras 4a91ee5c9c Extract (s) code from stable ABI zone
Only its jump addr remains.
2020-07-05 08:54:22 -04:00
Virgil Dupras 440ea43a88 z80a: make mnemonic names more uniform across assemblers
Initially, I used the same letters as those used in the z80 ref
docs, but it makes the different assemblers harder to use than they
should. Having consistent "argtype" rules across assemblers should
help.
2020-06-27 22:01:56 -04:00
Virgil Dupras c07a594e1a Begin working on a Visual Editor 2020-06-04 10:39:59 -04:00
Virgil Dupras f75b1c8864 Add word ?DUP 2020-05-22 14:19:02 -04:00
Virgil Dupras 503dbe9a2c Copy boot.z80 to blkfs 2020-04-22 21:19:12 -04:00