diff options
| author | Mike Pavone <pavone@retrodev.com> | 2013-05-02 22:26:47 -0700 |
|---|---|---|
| committer | Mike Pavone <pavone@retrodev.com> | 2013-05-02 22:26:47 -0700 |
| commit | fbf09acd0f2985d26300dd6e173a3c81901cc854 (patch) | |
| tree | 6a4dbd6e98a9c664a9948917eb55d7b346339fac /z80_to_x86.c | |
| parent | 12e49666b04b43ed77106e05b0f2565f137bda98 (diff) | |
Implement LDI
Diffstat (limited to 'z80_to_x86.c')
| -rw-r--r-- | z80_to_x86.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/z80_to_x86.c b/z80_to_x86.c index 6d2fb86..daf7f05 100644 --- a/z80_to_x86.c +++ b/z80_to_x86.c @@ -507,7 +507,21 @@ uint8_t * translate_z80inst(z80inst * inst, uint8_t * dst, z80_context * context 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); |