diff options
Diffstat (limited to 'src/devices/cpu/cops1/cops1d.h')
-rw-r--r-- | src/devices/cpu/cops1/cops1d.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/src/devices/cpu/cops1/cops1d.h b/src/devices/cpu/cops1/cops1d.h new file mode 100644 index 00000000000..d7a98a9f638 --- /dev/null +++ b/src/devices/cpu/cops1/cops1d.h @@ -0,0 +1,53 @@ +// license:BSD-3-Clause +// copyright-holders:hap +/* + + National Semiconductor COPS(MM57 MCU family) disassembler + +*/ + +#ifndef MAME_CPU_COPS1_COPS1D_H +#define MAME_CPU_COPS1_COPS1D_H + +#pragma once + + +class cops1_common_disassembler : public util::disasm_interface +{ +public: + cops1_common_disassembler(); + virtual ~cops1_common_disassembler() = default; + + 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 6; } + virtual offs_t pc_linear_to_real(offs_t pc) const override { return (pc & ~0x3f) | m_l2r[pc & 0x3f]; } + virtual offs_t pc_real_to_linear(offs_t pc) const override { return (pc & ~0x3f) | m_r2l[pc & 0x3f]; } + +protected: + enum e_mnemonics : unsigned; + static const char *const s_name[]; + static const u8 s_bits[]; + static const u32 s_flags[]; + + u8 m_l2r[0x40]; + u8 m_r2l[0x40]; + + offs_t increment_pc(offs_t pc); + offs_t common_disasm(const u8 *lut_opmap, std::ostream &stream, offs_t pc, const data_buffer &opcodes, const data_buffer ¶ms); +}; + +class mm5799_disassembler : public cops1_common_disassembler +{ +public: + mm5799_disassembler() = default; + virtual ~mm5799_disassembler() = default; + + virtual offs_t disassemble(std::ostream &stream, offs_t pc, const data_buffer &opcodes, const data_buffer ¶ms) override; + +private: + static const u8 mm5799_opmap[0x100]; + +}; + +#endif // MAME_CPU_COPS1_COPS1D_H |