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version 1.2, 2004/08/08 17:45:52
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version 1.5, 2005/02/04 06:42:14
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Line 137 _scf: and byte [edi + R_Z80F], ~(H_FL
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Line 137 _scf: and byte [edi + R_Z80F], ~(H_FL
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| align 16 |
align 16 |
| _halt: dec word [edi + R_Z80PC] |
_halt: dec word [edi + R_Z80PC] |
| or byte [edi + R_Z80IFF], (1 << IFF_HALT) |
or byte [edi + R_Z80IFF], (1 << IFF_HALT) |
| |
mov dword [edi + z80core_t.remainclock], 0 |
| ret |
ret |
| |
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| align 16 |
align 16 |
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Line 144 _di: or byte [edi + R_Z80IFF], (1 <<
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Line 145 _di: or byte [edi + R_Z80IFF], (1 <<
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| ret |
ret |
| |
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| align 16 |
align 16 |
| _ei: and byte [edi + R_Z80IFF], ~(1 << IFF_IFLAG) |
_ei: mov al, [edi + R_Z80IFF] |
| movzx ecx, word [edi + R_Z80PC] |
test al, (1 << IFF_IFLAG) |
| call memfetch |
je short .ed |
| cmp al, 0fbh |
and al, ~(1 << IFF_IFLAG) |
| je short .eiret |
mov edx, [edi + z80core_t.remainclock] |
| inc byte [edi + R_Z80R] |
mov [edi + R_Z80IFF], al |
| inc word [edi + R_Z80PC] |
test al, (1 << IFF_NMI) |
| movzx edx, byte [_cycles_main + eax] |
jne short .nextop |
| Z80WORK edx |
cmp dword [edi + R_Z80REQIRQ], byte 0 |
| jmp [opcode_main + eax*4] |
jne short .eventexit |
| .eiret: ret |
.nextop: cmp edx, byte 1 |
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jge short .ed |
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.eventexit: dec edx |
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mov dword [edi + z80core_t.remainclock], 1 |
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sub [edi + z80core_t.baseclock], edx |
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.ed: ret |
| |
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| align 16 |
align 16 |
| ld_nop: ret |
ld_nop: ret |
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