diff options
Diffstat (limited to 'src/devices/cpu/h6280/6280dasm.h')
-rw-r--r-- | src/devices/cpu/h6280/6280dasm.h | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/src/devices/cpu/h6280/6280dasm.h b/src/devices/cpu/h6280/6280dasm.h new file mode 100644 index 00000000000..5186720dfa8 --- /dev/null +++ b/src/devices/cpu/h6280/6280dasm.h @@ -0,0 +1,90 @@ +// license:BSD-3-Clause +// copyright-holders:Bryan McPhail +/***************************************************************************** + + 6280dasm.c Hudsonsoft Hu6280 (HuC6280/Hu6280a) disassembler + + Copyright Bryan McPhail, mish@tendril.co.uk + + This source code is based (with permission!) on the 6502 emulator by + Juergen Buchmueller. It is released as part of the Mame emulator project. + Let me know if you intend to use this code in any other project. + + + Notes relating to Mame: + + The dasm window shows 'real' memory, as executed by the cpu + The data windows show 'physical' memory, as defined in the memory map + +******************************************************************************/ + +#ifndef MAME_CPU_H6280_6280DASM_H +#define MAME_CPU_H6280_6280DASM_H + +#pragma once + +class h6280_disassembler : public util::disasm_interface +{ +public: + h6280_disassembler() = default; + virtual ~h6280_disassembler() = default; + + virtual u32 opcode_alignment() const override; + virtual offs_t disassemble(std::ostream &stream, offs_t pc, const data_buffer &opcodes, const data_buffer ¶ms) override; + +private: + enum addr_mode { + _non=0, /* no additional arguments */ + _acc, /* accumulator */ + _imp, /* implicit */ + _imm, /* immediate */ + _abs, /* absolute */ + _zpg, /* zero page */ + _zpx, /* zero page + X */ + _zpy, /* zero page + Y */ + _zpi, /* zero page indirect */ + _abx, /* absolute + X */ + _aby, /* absolute + Y */ + _rel, /* relative */ + _idx, /* zero page pre indexed */ + _idy, /* zero page post indexed */ + _ind, /* indirect */ + _iax, /* indirect + X */ + _blk, /* block */ + _zrl, /* zero page relative */ + _imz, /* immediate, zero page */ + _izx, /* immediate, zero page + X */ + _ima, /* immediate, absolute */ + _imx /* immediate, absolute + X */ + }; + + enum opcodes { + /* 6502 opcodes */ + _adc=0,_and, _asl, _bcc, _bcs, _beq, _bit, _bmi, + _bne, _bpl, _brk, _bvc, _bvs, _clc, _cld, _cli, + _clv, _cmp, _cpx, _cpy, _dec, _dex, _dey, _eor, + _inc, _inx, _iny, _jmp, _jsr, _lda, _ldx, _ldy, + _lsr, _nop, _ora, _pha, _php, _pla, _plp, _rol, + _ror, _rti, _rts, _sbc, _sec, _sed, _sei, _sta, + _stx, _sty, _tax, _tay, _tsx, _txa, _txs, _tya, + _ill, + + /* Hu6280 extensions */ + _bra, _stz, _trb, _tsb, _dea, _ina, _sax, _bsr, + _phx, _phy, _plx, _ply, _csh, _csl, _tam, _tma, + _cla, _cly, _clx, _st0, _st1, _st2, _tst, _set, + _tdd, _tia, _tii, _tin, _tai, _say, _sxy, + + _sm0, _sm1, _sm2, _sm3, _sm4, _sm5, _sm6, _sm7, + _rm0, _rm1, _rm2, _rm3, _rm4, _rm5, _rm6, _rm7, + + _bs0, _bs1, _bs2, _bs3, _bs4, _bs5, _bs6, _bs7, + _br0, _br1, _br2, _br3, _br4, _br5, _br6, _br7 + }; + + static const char *const token[]; + static const unsigned char op6280[512]; + +}; + +#endif |