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collapseos/blk/285
Virgil Dupras f2f520cacc Extract (br), (?br) and (loop)'s code out of stable ABI zone
There is now no more actual code in stable ABI, only references.
This makes refactoring of this code much easier. For example,
changing IY to BC as the IP register.
2020-07-05 14:57:18 -04:00

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CODE (loop)
PC ORG @ 0x45 + ! ( stable ABI JP )
0 IX+ INC(IXY+), IFZ, 1 IX+ INC(IXY+), THEN, ( I++ )
( Jump if I <> I' )
A 0 IX+ LDrIXY, 2 IX- CP(IXY+), JRNZ, L1 BWR ( branch )
A 1 IX+ LDrIXY, 1 IX- CP(IXY+), JRNZ, L1 BWR ( branch )
( don't branch )
IX DECd, IX DECd, IX DECd, IX DECd,
IY INCd, IY INCd,
;CODE