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e4a4a9800d
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.
13 lines
331 B
Plaintext
13 lines
331 B
Plaintext
CODE (loop)
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PC ORG @ 0x45 + ! ( stable ABI JP )
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0 IX+ INC(IXY+), IFZ, 1 IX+ INC(IXY+), THEN, ( I++ )
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( Jump if I <> I' )
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A 0 IX+ LDrIXY, 2 IX- CP(IXY+), JRNZ, L1 BWR ( branch )
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A 1 IX+ LDrIXY, 1 IX- CP(IXY+), JRNZ, L1 BWR ( branch )
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( don't branch )
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IX DECd, IX DECd, IX DECd, IX DECd,
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BC INCd,
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;CODE
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