diff options
Diffstat (limited to 'z80.cpu')
| -rw-r--r-- | z80.cpu | 73 |
1 files changed, 71 insertions, 2 deletions
@@ -3,13 +3,29 @@ info opcode_size 8 extra_tables cb ed dded fded ddcb fdcb dd fd body z80_run_op + sync_cycle z80_sync_cycle + interrupt z80_interrupt include z80_util.c header z80.h declare void init_z80_opts(z80_options * options, memmap_chunk const * chunks, uint32_t num_chunks, memmap_chunk const * io_chunks, uint32_t num_io_chunks, uint32_t clock_divider, uint32_t io_address_mask); z80_context * init_z80_context(z80_options *options); - + void z80_run(z80_context *context, uint32_t target_cycle); + void z80_assert_reset(z80_context * context, uint32_t cycle); + void z80_clear_reset(z80_context * context, uint32_t cycle); + void z80_assert_busreq(z80_context * context, uint32_t cycle); + void z80_clear_busreq(z80_context * context, uint32_t cycle); + void z80_assert_nmi(z80_context *context, uint32_t cycle); + uint8_t z80_get_busack(z80_context * context, uint32_t cycle); + void z80_invalidate_code_range(z80_context *context, uint32_t start, uint32_t end); + void z80_adjust_cycles(z80_context * context, uint32_t deduction); + void z80_serialize(z80_context *context, serialize_buffer *buf); + void z80_deserialize(deserialize_buffer *buf, void *vcontext); + void zinsert_breakpoint(z80_context * context, uint16_t address, uint8_t * bp_handler); + void zremove_breakpoint(z80_context * context, uint16_t address); + void z80_options_free(z80_options *opts); + regs main 8 b c d e h l f a alt 8 b' c' d' e' h' l' f' a' @@ -31,10 +47,18 @@ regs zflag 8 scratch1 16 scratch2 16 + busreq 8 + busack 8 + reset 8 io_map ptrmemmap_chunk io_chunks 32 io_mask 32 + int_cycle 32 + int_value 8 + nmi_cycle 32 + system ptrvoid fastmem ptr8 64 + mem_pointers ptr8 4 flags register f @@ -59,6 +83,49 @@ z80_op_fetch z80_run_op z80_op_fetch dispatch scratch1 + +z80_interrupt + cmp int_cycle cycles + if >=U + + mov 0xFFFFFFFF int_cycle + mov 0 iff1 + mov 0 iff2 + cycles 6 + update_sync + + switch imode + case 0 + dispatch int_value + + case 1 + dispatch 0xFF + + case 2 + lsl i 8 pc + or int_value pc pc + #CD is call + dispatch 0xCD + end + + else + + cmp nmi_cycle cycles + if >=U + + mov 0xFFFFFFFF nmi_cycle + mov 0 iff1 + local pch 8 + lsr pc 8 pch + meta high pch + meta low pc + z80_push + mov 0x66 pc + update_sync + + end + end + 11001011 cb_prefix z80_op_fetch @@ -1485,7 +1552,9 @@ ed 01D11110 im2 mov 2 imode ed 01D01110 im3 - mov 3 imode + #some sources call this mode 0/1, but unclear + #if the behavior is really different from im 0 + mov 0 imode 11000011 jp z80_fetch_immed16 |