mirror of https://github.com/bsnes-emu/bsnes.git
148 lines
2.7 KiB
C++
148 lines
2.7 KiB
C++
struct CPU : Processor::R65816, Thread, public PPUcounter {
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enum : bool { Threaded = true };
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CPU();
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alwaysinline auto step(uint clocks) -> void;
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alwaysinline auto synchronizeSMP() -> void;
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auto synchronizePPU() -> void;
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auto synchronizeCoprocessors() -> void;
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auto synchronizeDevices() -> void;
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auto portRead(uint2 port) const -> uint8;
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auto portWrite(uint2 port, uint8 data) -> void;
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auto pio() -> uint8;
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auto joylatch() -> bool;
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alwaysinline auto interrupt_pending() -> bool { return status.interrupt_pending; }
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auto enter() -> void;
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auto enable() -> void;
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auto power() -> void;
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auto reset() -> void;
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auto serialize(serializer&) -> void;
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uint8 wram[128 * 1024] = {0};
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vector<Thread*> coprocessors;
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privileged:
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uint cpu_version = 2; //allowed: 1, 2
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#include "dma/dma.hpp"
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#include "memory/memory.hpp"
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#include "mmio/mmio.hpp"
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#include "timing/timing.hpp"
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struct Status {
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bool interrupt_pending;
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uint clock_count;
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uint line_clocks;
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//timing
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bool irq_lock;
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uint dram_refresh_position;
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bool dram_refreshed;
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uint hdma_init_position;
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bool hdma_init_triggered;
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uint hdma_position;
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bool hdma_triggered;
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bool nmi_valid;
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bool nmi_line;
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bool nmi_transition;
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bool nmi_pending;
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bool nmi_hold;
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bool irq_valid;
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bool irq_line;
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bool irq_transition;
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bool irq_pending;
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bool irq_hold;
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bool reset_pending;
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//DMA
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bool dma_active;
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uint dma_counter;
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uint dma_clocks;
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bool dma_pending;
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bool hdma_pending;
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bool hdma_mode; //0 = init, 1 = run
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//auto joypad polling
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bool auto_joypad_active;
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bool auto_joypad_latch;
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uint auto_joypad_counter;
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uint auto_joypad_clock;
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//MMIO
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//$2140-217f
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uint8 port[4];
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//$2181-$2183
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uint17 wram_addr;
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//$4016-$4017
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bool joypad_strobe_latch;
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uint32 joypad1_bits;
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uint32 joypad2_bits;
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//$4200
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bool nmi_enabled;
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bool hirq_enabled, virq_enabled;
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bool auto_joypad_poll;
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//$4201
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uint8 pio;
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//$4202-$4203
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uint8 wrmpya;
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uint8 wrmpyb;
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//$4204-$4206
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uint16 wrdiva;
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uint8 wrdivb;
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//$4207-$420a
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uint9 hirq_pos;
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uint9 virq_pos;
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//$420d
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uint rom_speed;
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//$4214-$4217
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uint16 rddiv;
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uint16 rdmpy;
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//$4218-$421f
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uint16 joy1;
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uint16 joy2;
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uint16 joy3;
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uint16 joy4;
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} status;
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struct ALU {
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uint mpyctr;
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uint divctr;
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uint shift;
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} alu;
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static auto Enter() -> void;
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auto op_step() -> void;
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struct Debugger {
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hook<void (uint24)> op_exec;
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hook<void (uint24, uint8)> op_read;
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hook<void (uint24, uint8)> op_write;
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hook<void ()> op_nmi;
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hook<void ()> op_irq;
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} debugger;
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};
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extern CPU cpu;
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