mirror of https://github.com/bsnes-emu/bsnes.git
134 lines
2.5 KiB
C++
Executable File
134 lines
2.5 KiB
C++
Executable File
class CPU : public Processor, public CPUcore, public PPUcounter, public MMIO {
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public:
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enum : bool { Threaded = true };
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array<Processor*> coprocessors;
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alwaysinline void step(unsigned clocks);
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alwaysinline void synchronize_smp();
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void synchronize_ppu();
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void synchronize_coprocessor();
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uint8 pio();
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bool joylatch();
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alwaysinline bool interrupt_pending() { return status.interrupt_pending; }
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alwaysinline uint8 port_read(uint8 port) { return apu_port[port & 3]; }
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alwaysinline void port_write(uint8 port, uint8 data) { apu_port[port & 3] = data; }
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void enter();
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void power();
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void reset();
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void serialize(serializer&);
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CPU();
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~CPU();
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private:
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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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uint8 cpu_version;
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struct Status {
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bool interrupt_pending;
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uint16 interrupt_vector;
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unsigned clock_count;
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unsigned line_clocks;
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//timing
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bool irq_lock;
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unsigned dram_refresh_position;
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bool dram_refreshed;
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unsigned hdma_init_position;
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bool hdma_init_triggered;
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unsigned 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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unsigned dma_counter;
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unsigned 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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//MMIO
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//$2181-$2183
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uint32 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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uint16 hirq_pos, virq_pos;
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//$420d
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unsigned 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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uint8 joy1l, joy1h;
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uint8 joy2l, joy2h;
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uint8 joy3l, joy3h;
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uint8 joy4l, joy4h;
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} status;
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struct ALU {
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unsigned mpyctr;
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unsigned divctr;
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unsigned shift;
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} alu;
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static void Enter();
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void op_irq();
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debugvirtual void op_step();
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friend class CPUDebugger;
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};
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#if defined(DEBUGGER)
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#include "debugger/debugger.hpp"
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extern CPUDebugger cpu;
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#else
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extern CPU cpu;
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#endif
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