mirror of https://github.com/bsnes-emu/bsnes.git
118 lines
2.1 KiB
C++
118 lines
2.1 KiB
C++
struct CPU : Processor::LR35902, Thread, MMIO {
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enum class Interrupt : unsigned {
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Vblank,
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Stat,
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Timer,
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Serial,
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Joypad,
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};
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struct Status {
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unsigned clock;
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//$ff00 JOYP
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bool p15;
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bool p14;
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uint8 joyp;
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uint8 mlt_req;
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//$ff01 SB
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uint8 serial_data;
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unsigned serial_bits;
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//$ff02 SC
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bool serial_transfer;
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bool serial_clock;
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//$ff04 DIV
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uint8 div;
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//$ff05 TIMA
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uint8 tima;
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//$ff06 TMA
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uint8 tma;
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//$ff07 TAC
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bool timer_enable;
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unsigned timer_clock;
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//$ff0f IF
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bool interrupt_request_joypad;
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bool interrupt_request_serial;
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bool interrupt_request_timer;
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bool interrupt_request_stat;
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bool interrupt_request_vblank;
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//$ff4d KEY1
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bool speed_double;
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bool speed_switch;
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//$ff51,$ff52 HDMA1,HDMA2
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uint16 dma_source;
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//$ff53,$ff54 HDMA3,HDMA4
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uint16 dma_target;
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//$ff55 HDMA5
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bool dma_mode;
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uint16 dma_length;
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//$ff6c ???
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uint8 ff6c;
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//$ff70 SVBK
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uint3 wram_bank;
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//$ff72-$ff75 ???
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uint8 ff72;
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uint8 ff73;
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uint8 ff74;
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uint8 ff75;
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//$ffff IE
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bool interrupt_enable_joypad;
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bool interrupt_enable_serial;
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bool interrupt_enable_timer;
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bool interrupt_enable_stat;
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bool interrupt_enable_vblank;
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} status;
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uint8 wram[32768]; //GB=8192, GBC=32768
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uint8 hram[128];
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static void Main();
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void main();
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void interrupt_raise(Interrupt id);
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void interrupt_test();
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void interrupt_exec(uint16 pc);
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bool stop();
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void power();
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void serialize(serializer&);
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//mmio.cpp
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unsigned wram_addr(uint16 addr) const;
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void mmio_joyp_poll();
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uint8 mmio_read(uint16 addr);
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void mmio_write(uint16 addr, uint8 data);
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//memory.cpp
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void op_io();
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uint8 op_read(uint16 addr);
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void op_write(uint16 addr, uint8 data);
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void cycle_edge();
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uint8 debugger_read(uint16 addr);
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//timing.cpp
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void add_clocks(unsigned clocks);
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void timer_262144hz();
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void timer_65536hz();
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void timer_16384hz();
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void timer_8192hz();
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void timer_4096hz();
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void hblank();
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};
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extern CPU cpu;
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