mirror of https://github.com/bsnes-emu/bsnes.git
114 lines
2.3 KiB
C++
114 lines
2.3 KiB
C++
struct CPU : Processor::LR35902, Thread, MMIO {
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enum class Interrupt : uint { Vblank, Stat, Timer, Serial, Joypad };
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static auto Enter() -> void;
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auto main() -> void;
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auto raise(Interrupt id) -> void;
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auto interruptTest() -> void;
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auto stop() -> bool;
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auto power() -> void;
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auto serialize(serializer&) -> void;
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//mmio.cpp
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auto wramAddress(uint16 addr) const -> uint;
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auto joypPoll() -> void;
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auto readIO(uint16 addr) -> uint8;
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auto writeIO(uint16 addr, uint8 data) -> void;
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//memory.cpp
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auto io() -> void override;
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auto read(uint16 addr) -> uint8 override;
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auto write(uint16 addr, uint8 data) -> void override;
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auto cycleEdge() -> void;
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auto readDMA(uint16 addr) -> uint8;
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auto writeDMA(uint16 addr, uint8 data) -> void;
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auto readDebugger(uint16 addr) -> uint8;
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//timing.cpp
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auto step(uint clocks) -> void;
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auto timer262144hz() -> void;
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auto timer65536hz() -> void;
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auto timer16384hz() -> void;
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auto timer8192hz() -> void;
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auto timer4096hz() -> void;
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auto hblank() -> void;
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struct Status {
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uint22 clock;
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//$ff00 JOYP
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bool p15;
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bool p14;
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uint8 joyp;
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uint8 mltReq;
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//$ff01 SB
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uint8 serialData;
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uint serialBits;
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//$ff02 SC
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bool serialTransfer;
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bool serialClock;
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//$ff04 DIV
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uint16 div;
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//$ff05 TIMA
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uint8 tima;
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//$ff06 TMA
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uint8 tma;
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//$ff07 TAC
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bool timerEnable;
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uint timerClock;
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//$ff0f IF
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bool interruptRequestJoypad;
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bool interruptRequestSerial;
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bool interruptRequestTimer;
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bool interruptRequestStat;
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bool interruptRequestVblank;
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//$ff4d KEY1
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bool speedDouble;
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bool speedSwitch;
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//$ff51,$ff52 HDMA1,HDMA2
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uint16 dmaSource;
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//$ff53,$ff54 HDMA3,HDMA4
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uint16 dmaTarget;
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//$ff55 HDMA5
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bool dmaMode;
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uint16 dmaLength;
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bool dmaCompleted;
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//$ff6c ???
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uint8 ff6c;
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//$ff70 SVBK
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uint3 wramBank;
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//$ff72-$ff75 ???
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uint8 ff72;
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uint8 ff73;
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uint8 ff74;
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uint8 ff75;
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//$ffff IE
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bool interruptEnableJoypad;
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bool interruptEnableSerial;
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bool interruptEnableTimer;
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bool interruptEnableStat;
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bool interruptEnableVblank;
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} status;
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uint8 wram[32768]; //GB=8192, GBC=32768
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uint8 hram[128];
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};
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extern CPU cpu;
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