Commit Graph

6 Commits

Author SHA1 Message Date
Virgil Dupras
bf4ab0f1b4 z80: protect or avoid BC wherever it's used
For the IY->BC move, of course.
2020-07-05 23:12:17 -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
b2b556911f trs80: implement AT-XY
Also, I've run VE on the TRS-80 for the first time! It doesn't work
well though. Screen is mostly blank all the time.

I removed instructions from the recipe which became obsolete when
Collapse OS became 100% bootstrapped. Also, I've updated instructions
to change the NL override which is necessary for blkup to work.
2020-06-07 11:14:57 -04:00
Virgil Dupras
0b3a328e65 Add a layer of indirection for KEY 2020-05-02 11:17:28 -04:00
Virgil Dupras
ecca70c7f3 Add layer of indirection to EMIT
This would allow things like temporary giving control to the *CL
line on the TRS-80. For example... A very far fetched example. Not
at all the only *raison d'etre* of the layer...
2020-05-01 20:05:15 -04:00
Virgil Dupras
07f807edee recipes/trs80: making progress on floppy drivers 2020-04-30 16:10:35 -04:00