diff options
Diffstat (limited to 'src/devices/cpu/upd777/upd777dasm.h')
-rw-r--r-- | src/devices/cpu/upd777/upd777dasm.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/devices/cpu/upd777/upd777dasm.h b/src/devices/cpu/upd777/upd777dasm.h new file mode 100644 index 00000000000..b7729edbc30 --- /dev/null +++ b/src/devices/cpu/upd777/upd777dasm.h @@ -0,0 +1,34 @@ +// license:BSD-3-Clause +// copyright-holders:Vas Crabb + +#ifndef MAME_CPU_UPD777_UPD777DASM_H +#define MAME_CPU_UPD777_UPD777DASM_H + +#pragma once + + +class upd777_disassembler : public util::disasm_interface +{ +public: + // construction/destruction + upd777_disassembler(); + +protected: + // disassembler overrides + virtual u32 opcode_alignment() const override { return 1; } + virtual u32 interface_flags() const override { return NONLINEAR_PC | PAGED; } + virtual u32 page_address_bits() const override { return 7; } + virtual offs_t pc_linear_to_real(offs_t pc) const override { return (pc & ~0x7f) | m_l2r[pc & 0x7f]; } + virtual offs_t pc_real_to_linear(offs_t pc) const override { return (pc & ~0x7f) | m_r2l[pc & 0x7f]; } + virtual offs_t disassemble(std::ostream &stream, offs_t pc, const data_buffer &opcodes, const data_buffer ¶ms) override; + +private: + u8 m_l2r[0x80]; + u8 m_r2l[0x80]; + + std::string get_300optype_name(int optype); + std::string get_200optype_name(int optype); + std::string get_reg_name(int reg); +}; + +#endif // MAME_CPU_UPD777_UPD777DASM_H |