diff options
Diffstat (limited to 'z80_to_x86.c')
| -rw-r--r-- | z80_to_x86.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/z80_to_x86.c b/z80_to_x86.c index 02c9334..198dbe6 100644 --- a/z80_to_x86.c +++ b/z80_to_x86.c @@ -363,7 +363,7 @@ void translate_z80inst(z80inst * inst, z80_context * context, uint16_t address, break; case Z80_IX_DISPLACE: case Z80_IY_DISPLACE: - num_cycles = 8; //3 for displacement, 5 for address addition + num_cycles += 8; //3 for displacement, 5 for address addition break; } cycles(&opts->gen, num_cycles); @@ -1417,11 +1417,16 @@ void translate_z80inst(z80inst * inst, z80_context * context, uint16_t address, cycles(&opts->gen, num_cycles); mov_irdisp(code, 0, opts->gen.context_reg, offsetof(z80_context, iff1), SZ_B); mov_irdisp(code, 0, opts->gen.context_reg, offsetof(z80_context, iff2), SZ_B); + //turn cycles remaining into current cycle + neg_r(code, opts->gen.cycles, SZ_D); add_rdispr(code, opts->gen.context_reg, offsetof(z80_context, target_cycle), opts->gen.cycles, SZ_D); + //set interrupt cycle to never and fetch the new target cycle from sync_cycle mov_rdispr(code, opts->gen.context_reg, offsetof(z80_context, sync_cycle), opts->gen.scratch1, SZ_D); mov_irdisp(code, 0xFFFFFFFF, opts->gen.context_reg, offsetof(z80_context, int_cycle), SZ_D); mov_rrdisp(code, opts->gen.scratch1, opts->gen.context_reg, offsetof(z80_context, target_cycle), SZ_D); - sub_rr(code, opts->gen.scratch1, opts->gen.cycles, SZ_D); + //turn current cycle back into cycles remaining + neg_r(code, opts->gen.cycles, SZ_D); + add_rr(code, opts->gen.scratch1, opts->gen.cycles, SZ_D); break; case Z80_EI: cycles(&opts->gen, num_cycles); |