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more Z80 work

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FeralChild64 authored and FeralChild64 committed 2021-01-26 00:03:07 +01:00
1 parent de92cc991c
commit fb347b6a7b
10 files changed
+297 -138
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src/zvm_m65/,aliases_zvm.s
+15 -11
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@@ -1,15 +1,19 @@
!addr REG_A = $02 ; 8-bit accumulator
!addr REG_F = $03 ; 8-bit flag register
!addr REG_B = $04 ; general purpose 8-bit registers
!addr REG_C = $05
!addr REG_D = $06
!addr REG_E = $07
!addr REG_H = $08
!addr REG_L = $09
!addr REG_AF = $02 ; 16-bit combined register
!addr REG_F = REG_AF+0 ; 8-bit flag register
!addr REG_A = REG_AF+1 ; 8-bit accumulator
!addr REG_BC = $04
!addr REG_C = REG_BC+0
!addr REG_B = REG_BC+1
!addr REG_DE = $06
!addr REG_E = REG_DE+0
!addr REG_D = REG_DE+1
!addr REG_HL = $08
!addr REG_L = REG_HL+0
!addr REG_H = REG_HL+1
!addr REG_A_SH = $0A ; shadow registers
!addr REG_F_SH = $0B
!addr REG_F_SH = $0A ; shadow registers
!addr REG_A_SH = $0B
!addr REG_C_SH = $0C
!addr REG_B_SH = $0D
!addr REG_E_SH = $0E
@@ -24,7 +28,7 @@
!addr REG_I = $1A ; 8-bit interrupt vector base
!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 REG_R7 = $1C ; refresh counter, bit 7 (bits 0-6 are garbage)
!addr PTR_IXY_d = $1D ; 16-bit calculated address IX+d / IY+d XXX - important!!!
!addr PTR_DATA = $1F ; data source address XXX - important!!!