Mercurial > repos > blastem
diff z80_to_x86.c @ 272:9b04b57434b5
Implement LDI
| author | Mike Pavone <pavone@retrodev.com> |
|---|---|
| date | Thu, 02 May 2013 22:26:47 -0700 |
| parents | 3c054d977175 |
| children | 719b9fea2fe9 |
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--- a/z80_to_x86.c Thu May 02 22:21:41 2013 -0700 +++ b/z80_to_x86.c Thu May 02 22:26:47 2013 -0700 @@ -507,7 +507,21 @@ dst = mov_rdisp8r(dst, CONTEXT, zar_off(Z80_E), opts->regs[Z80_DE], SZ_W); dst = mov_rrdisp8(dst, SCRATCH1, CONTEXT, zar_off(Z80_E), SZ_W); break; - //case Z80_LDI: + case Z80_LDI: { + dst = zcycles(dst, 8); + dst = mov_rr(dst, opts->regs[Z80_HL], SCRATCH1, SZ_W); + dst = call(dst, (uint8_t *)z80_read_byte); + dst = mov_rr(dst, opts->regs[Z80_DE], SCRATCH2, SZ_W); + dst = call(dst, (uint8_t *)z80_read_byte); + dst = zcycles(dst, 2); + dst = add_ir(dst, 1, opts->regs[Z80_DE], SZ_W); + dst = add_ir(dst, 1, opts->regs[Z80_HL], SZ_W); + dst = sub_ir(dst, 1, opts->regs[Z80_BC], SZ_W); + //TODO: Implement half-carry + dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); + dst = setcc_rdisp8(dst, CC_NZ, CONTEXT, zf_off(ZF_PV)); + break; + } case Z80_LDIR: { dst = zcycles(dst, 8); dst = mov_rr(dst, opts->regs[Z80_HL], SCRATCH1, SZ_W);