94 lines
1.7 KiB
C++
Executable File
94 lines
1.7 KiB
C++
Executable File
class sCPU : public CPU, public CPUcore {
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public:
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void enter();
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void op_irq();
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bool interrupt_pending() { return status.interrupt_pending; }
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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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enum DmaState { DmaInactive, DmaRun, DmaCpuSync };
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struct {
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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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bool alu_lock;
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unsigned dram_refresh_position;
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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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//DMA
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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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DmaState dma_state;
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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 mul_a, mul_b;
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//$4204-$4206
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uint16 div_a;
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uint8 div_b;
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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 r4214;
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uint16 r4216;
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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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void power();
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void reset();
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sCPU();
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~sCPU();
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};
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