C++ (Cpp) op_irq示例

示例#1

文件： cpu.cpp 项目： devinacker/bsnes-plus

void CPU::enter() {
  while(true) {
    if(scheduler.sync == Scheduler::SynchronizeMode::CPU) {
      scheduler.sync = Scheduler::SynchronizeMode::All;
      scheduler.exit(Scheduler::ExitReason::SynchronizeEvent);
    }

    if(status.interrupt_pending) {
      status.interrupt_pending = false;
      if(status.nmi_pending) {
        status.nmi_pending = false;
        status.interrupt_vector = (regs.e == false ? 0xffea : 0xfffa);
        op_irq();
      } else if(status.irq_pending) {
        status.irq_pending = false;
        status.interrupt_vector = (regs.e == false ? 0xffee : 0xfffe);
        op_irq();
      } else if(status.reset_pending) {
        status.reset_pending = false;
        add_clocks(186);
        regs.pc.l = bus.read(0xfffc);
        regs.pc.h = bus.read(0xfffd);
      }
    }

    op_step();
  }
}

示例#2

文件： cpu.cpp 项目： HDBSD/bizhawk

void CPU::enter() {
  while(true) {
    if(scheduler.sync == Scheduler::SynchronizeMode::CPU) {
      // we can only stop if there's enough time for at least one more event
      // on both the PPU and the SMP
      if (smp.clock < 0 && ppu.clock < 0) {
        scheduler.sync = Scheduler::SynchronizeMode::All;
        scheduler.exit(Scheduler::ExitReason::SynchronizeEvent);
      }
    }

    if(status.interrupt_pending) {
      status.interrupt_pending = false;
      if(status.nmi_pending) {
        status.nmi_pending = false;
        regs.vector = (regs.e == false ? 0xffea : 0xfffa);
        op_irq();
        debugger.op_nmi();
      } else if(status.irq_pending) {
        status.irq_pending = false;
        regs.vector = (regs.e == false ? 0xffee : 0xfffe);
        op_irq();
        debugger.op_irq();
      } else if(status.reset_pending) {
        status.reset_pending = false;
        add_clocks(186);
        regs.pc.l = bus.read(0xfffc);
        regs.pc.h = bus.read(0xfffd);
      }
    }

    op_step();
  }
}

示例#3

文件： cpu.cpp 项目： Hedrig/bsnes-classic

void CPU::enter() {
  while(true) {
    if(scheduler.sync == Scheduler::SynchronizeMode::CPU) {
      scheduler.sync = Scheduler::SynchronizeMode::All;
      scheduler.exit(Scheduler::ExitReason::SynchronizeEvent);
    }

    if(status.nmi_pending) {
      status.nmi_pending = false;
      op_irq(regs.e == false ? 0xffea : 0xfffa);
    }

    if(status.irq_pending) {
      status.irq_pending = false;
      op_irq(regs.e == false ? 0xffee : 0xfffe);
    }

    op_step();
  }
}