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Diffstat (limited to 'src/devices/cpu/pic16c5x/16c5xdsm.h')
-rw-r--r-- | src/devices/cpu/pic16c5x/16c5xdsm.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/src/devices/cpu/pic16c5x/16c5xdsm.h b/src/devices/cpu/pic16c5x/16c5xdsm.h new file mode 100644 index 00000000000..de3c8b4425f --- /dev/null +++ b/src/devices/cpu/pic16c5x/16c5xdsm.h @@ -0,0 +1,58 @@ +// license:BSD-3-Clause +// copyright-holders:Tony La Porta + /**************************************************************************\ + * Microchip PIC16C5x Emulator * + * * + * Copyright Tony La Porta * + * Originally written for the MAME project. * + * * + * * + * Addressing architecture is based on the Harvard addressing scheme. * + * * + * Many thanks to those involved in the i8039 Disassembler * + * as this was based on it. * + * * + * * + * * + * A Address to jump to. * + * B Bit address within an 8-bit file register. * + * D Destination select (0 = store result in W (accumulator)) * + * (1 = store result in file register) * + * F Register file address (00-1F). * + * K Literal field, constant data. * + * * + \**************************************************************************/ + +#ifndef MAME_CPU_PIC16C5X_16C5XDSM_H +#define MAME_CPU_PIC16C5X_16C5XDSM_H + +#pragma once + +class pic16c5x_disassembler : public util::disasm_interface +{ +public: + pic16c5x_disassembler(); + virtual ~pic16c5x_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: + struct PIC16C5xOpcode { + u16 mask; /* instruction mask */ + u16 bits; /* constant bits */ + u16 extcode; /* value that gets extension code */ + const char *parse; /* how to parse bits */ + const char *fmt; /* instruction format */ + + PIC16C5xOpcode(u16 m, u16 b, u16 e, const char *p, const char *f) : mask(m), bits(b), extcode(e), parse(p), fmt(f) {} + }; + + static const char *const regfile[32]; + static const char *const dest[2]; + static const char *const PIC16C5xFormats[]; + + std::vector<PIC16C5xOpcode> Op; +}; + +#endif |