Mercurial > repos > blastem
diff z80_to_x86.c @ 274:be2b845d3e94
Implement CPL and NEG (untested)
| author | Mike Pavone <pavone@retrodev.com> |
|---|---|
| date | Thu, 02 May 2013 22:39:39 -0700 |
| parents | 719b9fea2fe9 |
| children | 1a7d0a964ad2 |
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--- a/z80_to_x86.c Thu May 02 22:28:40 2013 -0700 +++ b/z80_to_x86.c Thu May 02 22:39:39 2013 -0700 @@ -851,9 +851,23 @@ dst = z80_save_reg(dst, inst, opts); dst = z80_save_ea(dst, inst, opts); break; - /*case Z80_DAA: + //case Z80_DAA: case Z80_CPL: - case Z80_NEG:*/ + dst = zcycles(dst, 4); + dst = not_r(dst, opts->regs[Z80_A], SZ_B); + //TODO: Implement half-carry flag + dst = mov_irdisp8(dst, 1, CONTEXT, zf_off(ZF_N), SZ_B); + break; + case Z80_NEG: + dst = zcycles(dst, 8); + dst = neg_r(dst, opts->regs[Z80_A], SZ_B); + //TODO: Implement half-carry flag + dst = setcc_rdisp8(dst, CC_Z, CONTEXT, zf_off(ZF_Z)); + dst = setcc_rdisp8(dst, CC_S, CONTEXT, zf_off(ZF_S)); + dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_C)); + dst = setcc_rdisp8(dst, CC_O, CONTEXT, zf_off(ZF_PV)); + dst = mov_irdisp8(dst, 1, CONTEXT, zf_off(ZF_N), SZ_B); + break; case Z80_CCF: dst = zcycles(dst, 4); dst = xor_irdisp8(dst, 1, CONTEXT, zf_off(ZF_C), SZ_B);