Mercurial > repos > blastem
changeset 307:b6393b89a7e4
Complete flag behavior for Z80 BIT instruction
| author | Mike Pavone <pavone@retrodev.com> |
|---|---|
| date | Wed, 08 May 2013 23:44:49 -0700 |
| parents | 3970006fae90 |
| children | e0e81551fd7e |
| files | z80_to_x86.c |
| diffstat | 1 files changed, 8 insertions(+), 0 deletions(-) [+] |
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--- a/z80_to_x86.c Wed May 08 23:31:19 2013 -0700 +++ b/z80_to_x86.c Wed May 08 23:44:49 2013 -0700 @@ -1160,6 +1160,14 @@ } dst = bt_ir(dst, inst->immed, src_op.base, SZ_B); dst = setcc_rdisp8(dst, CC_NC, CONTEXT, zf_off(ZF_Z)); + dst = setcc_rdisp8(dst, CC_NC, CONTEXT, zf_off(ZF_PV)); + dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); + if (inst->immed == 7) { + dst = cmp_ir(dst, 0, src_op.base, SZ_B); + dst = setcc_rdisp8(dst, CC_S, CONTEXT, zf_off(ZF_S)); + } else { + dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_S), SZ_B); + } break; case Z80_SET: cycles = (inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE) ? 8 : 16;