mirror of https://github.com/bsnes-emu/bsnes.git
73 lines
1.4 KiB
C++
73 lines
1.4 KiB
C++
//Hudson Soft HuC6280
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struct CPU : Processor::HuC6280, Thread {
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static auto Enter() -> void;
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auto main() -> void;
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auto step(uint clocks) -> void override;
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auto power() -> void;
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auto lastCycle() -> void override;
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//memory.cpp
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auto load() -> void;
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auto save() -> void;
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//io.cpp
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auto read(uint8 bank, uint13 addr) -> uint8 override;
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auto read_(uint8 bank, uint13 addr) -> uint8;
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auto write(uint8 bank, uint13 addr, uint8 data) -> void override;
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auto store(uint2 addr, uint8 data) -> void override;
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//timer.cpp
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auto timerStep(uint clocks) -> void;
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//serialization.cpp
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auto serialize(serializer&) -> void;
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vector<Thread*> peripherals;
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private:
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uint8 ram[0x8000]; //PC Engine = 8KB, SuperGrafx = 32KB
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uint8 bram[0x800]; //PC Engine CD-ROM Backup RAM = 2KB
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struct IRQ {
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//irq.cpp
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auto pending() const -> bool;
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auto vector() const -> uint16;
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auto poll() -> void;
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private:
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bool disableExternal = 0;
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bool disableVDC = 0;
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bool disableTimer = 0;
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bool pendingIRQ = 0;
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uint16 pendingVector;
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friend class CPU;
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} irq;
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struct Timer {
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inline auto irqLine() const { return line; }
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//timer.cpp
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auto start() -> void;
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auto step(uint clocks) -> void;
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private:
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bool enable = 0;
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uint7 latch;
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uint7 value;
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uint clock = 0;
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bool line = 0;
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friend class CPU;
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} timer;
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struct IO {
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uint8 mdr;
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} io;
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};
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extern CPU cpu;
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