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collapseos/blk/301
Virgil Dupras feeedcc55c z80: small optimization in execute
I had more ambitious goals, but I backed out of it: not worth it.
This small optimization is an easy picking though.
2020-06-16 16:37:21 -04:00

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L3 BSET PC ORG @ 0x34 + ! ( execute. DE -> wordref )
( We don't apply BIN( reliably on stable ABI stuff, we
might need to adjust addr. Ugly, but well... )
BIN( @ [IF]
A XORr, D ORr, IFZ, D BIN( @ 256 / LDrn, THEN,
[THEN]
LDA(DE),
L A LDrr,
H BIN( @ 256 / LDrn,
DE INCss,
( DE points to PFA )
JP(HL),