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implemented missing Z80 instructions

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FeralChild64 authored and FeralChild64 committed 2021-01-26 00:03:07 +01:00
1 parent 3ed88d3312
commit 99954e8274
1 file changed
+33 -1
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src/zvm_m65/z80_instr_block.s
+33 -1
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@@ -126,6 +126,38 @@ Z80_instr_ED_A9: ; CPD
jmp ZVM_next jmp ZVM_next
Z80_instr_ED_B1: ; CPIR Z80_instr_ED_B1: ; CPIR
+Z80_common_CP_block
inw REG_HL
dew REG_BC
beq Z80_common_CPIR_CPDR
+Z80_FETCH_VIA_HL
cmp REG_A
bne Z80_instr_ED_B1
+Z80_PUT_1_VF
jmp ZVM_next
Z80_common_CPIR_CPDR:
+Z80_FETCH_VIA_HL
cmp REG_A
+bne ZVM_next
+Z80_PUT_1_VF
jmp ZVM_next
Z80_instr_ED_B9: ; CPDR Z80_instr_ED_B9: ; CPDR
jmp ZVM_next ; XXX provide implementation +Z80_common_CP_block
dew REG_HL
dew REG_BC
beq Z80_common_CPIR_CPDR
+Z80_FETCH_VIA_HL
cmp REG_A
bne Z80_instr_ED_B9
+Z80_PUT_1_VF
jmp ZVM_next