mirror of https://github.com/bsnes-emu/bsnes.git
49 lines
909 B
C++
49 lines
909 B
C++
#include <fc/fc.hpp>
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namespace Famicom {
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#include "memory.cpp"
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#include "timing.cpp"
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#include "serialization.cpp"
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CPU cpu;
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auto CPU::Enter() -> void {
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while(true) scheduler.synchronize(), cpu.main();
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}
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auto CPU::main() -> void {
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if(io.interruptPending) return interrupt();
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instruction();
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}
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auto CPU::step(uint clocks) -> void {
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Thread::step(clocks);
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synchronize(apu);
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synchronize(ppu);
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synchronize(cartridge);
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for(auto peripheral : peripherals) synchronize(*peripheral);
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}
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auto CPU::power() -> void {
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R6502::power();
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for(auto addr : range(0x0800)) ram[addr] = 0xff;
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ram[0x0008] = 0xf7;
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ram[0x0009] = 0xef;
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ram[0x000a] = 0xdf;
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ram[0x000f] = 0xbf;
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}
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auto CPU::reset() -> void {
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R6502::reset();
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create(CPU::Enter, system.colorburst() * 6.0);
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regs.pc = bus.read(0xfffc) << 0;
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regs.pc |= bus.read(0xfffd) << 8;
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memory::fill(&io, sizeof(IO));
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io.rdyLine = 1;
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}
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}
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