mirror of
https://github.com/bsnes-emu/bsnes.git
synced 2025-04-02 10:42:14 -04:00
81f43a4d01
This represents a major code restructuring. The dot-based and scanline-based renderers are now split into two separate core libraries, asnes and bsnes. For now at least, these are -internal- names. I'm not entirely decided on how I'm going to handle releasing these two separate builds. Regardless, the folders need names. asnes has had all of the processor subfolders collapsed back into their parent folders. In other words, ppu's functions were moved into ppu/sppu, and then ppu was deleted, and then ppu/sppu became the new ppu. Repeat this for the cpu, smp and dsp and there you go. asnes/dsp also removed the DSP_STATE_MACHINE option. This was done for the sake of consistency with the rest of the core. asnes' debugger mode is currently extremely broken, but I will be fixing it in time. And for now, bsnes has kept the processor abstraction layer. I may keep it around, not sure yet. It doesn't hurt speed or anything, so I'm not too worried about making a decision right away. I may throw snesfilter, snesreader and supergameboy into this folder, just to have everything in one place. The alternate GUI forks are definitely going in there as dotnet, cocoa and python. Compiled output goes to the out/ folder now, to prevent conflicts with a file and folder named bsnes, for instance.
136 lines
2.3 KiB
C++
136 lines
2.3 KiB
C++
class CPU : public Processor, public PPUCounter, public MMIO, public CPUcore {
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public:
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//synchronization
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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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static void Enter();
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void enter();
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debugvirtual void op_step();
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void op_irq();
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bool interrupt_pending() { return status.interrupt_pending; }
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uint8 cpu_version;
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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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uint16 interrupt_vector;
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unsigned clock_count;
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unsigned line_clocks;
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//======
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//timing
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//======
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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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//===
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//DMA
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//===
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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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//====
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//MMIO
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//====
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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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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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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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