public void OnUpdate(TimeUtil timeUtil)
{
_InputTimer += (float)timeUtil.ElapsedGameTimeMilli;
if (_InputReset)
{
_InputReset = false;
_NESCore.Reset();
}
// update the NES
if (_EmulationMode)
{
do
{
_NESCore.clock();
} while (!_NESCore.PPU().frameComplete);
_NESCore.PPU().frameComplete = false;
}
else
{
if (_runToNextLDA)
{
// Check the end condition (LDA (IMM)) reached
if (_NESCore.CPU().opcode == 0xA1 ||
_NESCore.CPU().opcode == 0xA5 ||
_NESCore.CPU().opcode == 0xA9 ||
_NESCore.CPU().opcode == 0xAD ||
_NESCore.CPU().opcode == 0xB1 ||
_NESCore.CPU().opcode == 0xB5 ||
_NESCore.CPU().opcode == 0xB6 ||
_NESCore.CPU().opcode == 0xBD)
{
_runToNextLDA = false;
}
// advance one complete frame
_NESCore.StepCPUInstruction();
_InputStepCycle = false;
}
if (_InputStepFrame)
{
_NESCore.StepPPUFrame();
_NESCore.PPU().frameComplete = false;
_InputStepFrame = false;
}
if (_InputStepCycle)
{
_NESCore.StepCPUInstruction();
_InputStepCycle = false;
}
}
}