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Z*) speed optimizations

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FeralChild64 authored and FeralChild64 committed 2021-01-26 00:03:07 +01:00
1 parent 047e7dd56a
commit 2b7de74935
10 files changed
+337 -288
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src/zvm_m65/,aliases_zvm.s
+3 -1
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@@ -26,7 +26,9 @@
!addr REG_R06 = $1B ; refresh counter, bits 0-6 (bit 7 is garbage)
!addr REG_R7 = $1C ; refresh counter, bit 7 (bits 0-6 are 0's)
!addr ADDR_IXY_d = $1D ; 16-bit calculated address IX+d / IY+d XXX - important!!!
!addr PTR_IXY_d = $1D ; 16-bit calculated address IX+d / IY+d XXX - important!!!
!addr PTR_DATA = $1D ; data source address XXX is it OK to use the same one?
!addr REG_IFF1 = $1F ; interrupt flip-flop flag 1
!addr REG_IFF2 = $20 ; interrupt flip-flop flag 2