コード例 #1
0
        public void UpdateCore()
        {
            DIVTicks += CPUTicks;
            if (DIVTicks >= 0x40)
            {
                DIVTicks -= 0x40;
                memory.memory[0xFF04] = (memory.memory[0xFF04] + 1) & 0xFF; // inc DIV
            }

            long timedTicks = CPUTicks / multiplier;

            LCDTicks += timedTicks;
            lcd.ScanLine(lcd.currentScanLine);

            audioTicks += timedTicks;

            if (audioTicks >= Settings.audioGranularity)
            {
                emulatorTicks += audioTicks;
                if (emulatorTicks >= Settings.machineCyclesPerLoop)
                {
                    if ((stopEmulator & 1) == 0)
                    {
                        if (screen.drewBlank == 0)
                        {
                            screen.DrawToCanvas();
                        }
                    }
                    stopEmulator |= 1;
                    emulatorTicks = 0;
                }
                audioTicks = 0;
            }

            if (TIMAEnabled)
            {
                timerTicks += CPUTicks;
                while (timerTicks >= TACClocker)
                {
                    timerTicks -= TACClocker;
                    if (memory.memory[0xFF05] == 0xFF)
                    {
                        memory.memory[0xFF05]  = memory.memory[0xFF06];
                        memory.memory[0xFF0F] |= 0x4; // set IF bit 2
                    }
                    else
                    {
                        ++memory.memory[0xFF05];
                    }
                }
            }
        }