mirror of https://github.com/bsnes-emu/bsnes.git
80 lines
1.5 KiB
C++
80 lines
1.5 KiB
C++
//Sony CXP1100Q-1
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struct SMP : Processor::SPC700, Thread {
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auto readPort(uint2 port) const -> uint8;
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auto writePort(uint2 port, uint8 data) -> void;
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auto main() -> void;
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auto load(Markup::Node) -> bool;
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auto power() -> void;
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auto serialize(serializer&) -> void;
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uint8 iplrom[64];
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uint8 apuram[64 * 1024];
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private:
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struct IO {
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//timing
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uint clockCounter;
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uint dspCounter;
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uint timerStep;
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//$00f0
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uint8 clockSpeed;
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uint8 timerSpeed;
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bool timersEnable;
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bool ramDisable;
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bool ramWritable;
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bool timersDisable;
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//$00f1
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bool iplromEnable;
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//$00f2
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uint8 dspAddr;
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//$00f8,$00f9
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uint8 ram00f8;
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uint8 ram00f9;
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} io;
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static auto Enter() -> void;
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//memory.cpp
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auto readRAM(uint16 addr) -> uint8;
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auto writeRAM(uint16 addr, uint8 data) -> void;
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auto readBus(uint16 addr) -> uint8;
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auto writeBus(uint16 addr, uint8 data) -> void;
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auto idle() -> 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 readDisassembler(uint16 addr) -> uint8 override;
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//timing.cpp
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template<uint Frequency> struct Timer {
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uint8 stage0;
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uint8 stage1;
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uint8 stage2;
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uint4 stage3;
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bool line;
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bool enable;
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uint8 target;
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auto tick() -> void;
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auto synchronizeStage1() -> void;
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};
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Timer<192> timer0;
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Timer<192> timer1;
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Timer< 24> timer2;
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alwaysinline auto step(uint clocks) -> void;
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alwaysinline auto cycleEdge() -> void;
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};
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extern SMP smp;
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