mirror of https://github.com/bsnes-emu/bsnes.git
78 lines
1.7 KiB
C++
78 lines
1.7 KiB
C++
//NEC V30MZ
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#pragma once
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namespace Processor {
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struct V30MZ {
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virtual auto wait(uint clocks = 1) -> void = 0;
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virtual auto read(uint20 addr) -> uint8 = 0;
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virtual auto write(uint20 addr, uint8 data) -> void = 0;
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virtual auto in(uint16 port) -> uint16 = 0;
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virtual auto out(uint16 port, uint16 data) -> void = 0;
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auto exec() -> void;
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auto execOpcode() -> void;
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auto power() -> void;
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//memory.cpp
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auto readByte() -> uint8;
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auto readWord() -> uint16;
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//instructions.cpp
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auto opJumpFar();
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auto opInByte();
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auto opInWord();
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auto opOutByte();
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auto opOutWord();
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auto opInDXByte();
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auto opInDXWord();
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auto opOutDXByte();
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auto opOutDXWord();
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auto opMoveRegisterImmediateByte(uint8&);
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auto opMoveRegisterImmediateWord(uint16&);
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auto opNoOperation();
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auto opClearFlag(bool&);
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auto opSetFlag(bool&);
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//disassembler.cpp
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auto disassemble(uint16 cs, uint16 ip, bool registers = true) -> string;
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//state
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bool halt = false;
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uint executed = 0;
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struct Registers {
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uint16 ip;
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union { struct { uint16 ax; uint8 order_lsb2(al, ah); }; };
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union { struct { uint16 bx; uint8 order_lsb2(bl, bh); }; };
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union { struct { uint16 cx; uint8 order_lsb2(cl, ch); }; };
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union { struct { uint16 dx; uint8 order_lsb2(dl, dh); }; };
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uint16 si;
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uint16 di;
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uint16 bp;
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uint16 sp;
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uint16 cs;
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uint16 ds;
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uint16 es;
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uint16 ss;
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struct Flags {
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operator uint16() const;
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auto operator=(uint16 data);
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bool m; //mode
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bool v; //overflow
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bool d; //direction
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bool i; //interrupt
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bool b; //break
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bool s; //sign
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bool z; //zero
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bool h; //half-carry
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bool p; //parity
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bool c; //carry
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} f;
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} r;
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};
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}
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