mirror of https://github.com/bsnes-emu/bsnes.git
94 lines
1.7 KiB
C++
94 lines
1.7 KiB
C++
struct SMP : Processor::SPC700, Thread {
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uint8 iplrom[64];
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uint8 apuram[64 * 1024];
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enum : bool { Threaded = true };
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alwaysinline void step(unsigned clocks);
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alwaysinline void synchronize_cpu();
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alwaysinline void synchronize_dsp();
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uint8 port_read(uint2 port) const;
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void port_write(uint2 port, uint8 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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SMP();
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~SMP();
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privileged:
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struct {
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//timing
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unsigned clock_counter;
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unsigned dsp_counter;
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unsigned timer_step;
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//$00f0
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uint8 clock_speed;
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uint8 timer_speed;
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bool timers_enable;
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bool ram_disable;
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bool ram_writable;
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bool timers_disable;
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//$00f1
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bool iplrom_enable;
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//$00f2
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uint8 dsp_addr;
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//$00f8,$00f9
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uint8 ram00f8;
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uint8 ram00f9;
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} status;
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static void Enter();
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friend class SMPcore;
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struct Debugger {
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hook<void (uint16)> op_exec;
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hook<void (uint16, uint8)> op_read;
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hook<void (uint16, uint8)> op_write;
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} debugger;
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//memory.cpp
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uint8 ram_read(uint16 addr);
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void ram_write(uint16 addr, uint8 data);
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uint8 op_busread(uint16 addr);
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void op_buswrite(uint16 addr, uint8 data);
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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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uint8 disassembler_read(uint16 addr);
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//timing.cpp
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template<unsigned frequency>
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struct Timer {
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uint8 stage0_ticks;
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uint8 stage1_ticks;
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uint8 stage2_ticks;
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uint4 stage3_ticks;
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bool current_line;
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bool enable;
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uint8 target;
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void tick();
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void synchronize_stage1();
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};
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Timer<192> timer0;
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Timer<192> timer1;
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Timer< 24> timer2;
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alwaysinline void add_clocks(unsigned clocks);
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alwaysinline void cycle_edge();
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};
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extern SMP smp;
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