mirror of https://github.com/bsnes-emu/bsnes.git
72 lines
1.4 KiB
C++
72 lines
1.4 KiB
C++
struct CPU : Processor::V30MZ, Thread, IO {
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enum class Interrupt : uint {
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SerialSend,
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Input,
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Cartridge,
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SerialReceive,
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LineCompare,
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VblankTimer,
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Vblank,
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HblankTimer,
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};
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static auto Enter() -> void;
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auto main() -> void;
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auto step(uint clocks) -> void;
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auto wait(uint clocks = 1) -> void override;
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auto read(uint20 addr) -> uint8 override;
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auto write(uint20 addr, uint8 data) -> void override;
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auto in(uint16 port) -> uint8 override;
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auto out(uint16 port, uint8 data) -> void override;
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auto power() -> void;
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//io.cpp
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auto keypadRead() -> uint4;
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auto portRead(uint16 addr) -> uint8 override;
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auto portWrite(uint16 addr, uint8 data) -> void override;
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//interrupt.cpp
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auto poll() -> void;
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auto raise(Interrupt) -> void;
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auto lower(Interrupt) -> void;
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//dma.cpp
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auto dmaTransfer() -> void;
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//serialization.cpp
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auto serialize(serializer&) -> void;
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struct Registers {
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//$0040-0042 DMA_SRC
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uint20 dmaSource;
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//$0044-0045 DMA_DST
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uint16 dmaTarget;
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//$0046-0047 DMA_LEN
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uint16 dmaLength;
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//$0048 DMA_CTRL
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uint1 dmaEnable;
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uint1 dmaMode; //0 = increment; 1 = decrement
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//$00b0 INT_BASE
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uint8 interruptBase;
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//$00b2 INT_ENABLE
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uint8 interruptEnable;
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//$00b4 INT_STATUS
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uint8 interruptStatus;
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//$00b5 KEYPAD
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uint1 ypadEnable;
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uint1 xpadEnable;
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uint1 buttonEnable;
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} r;
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};
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extern CPU cpu;
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