// Reset CPU control section and instruction decoder internal state
private void ResetCPUControlState()
{
// Z80CPU.cs internal state
tStateCounter = 0;
machineCycleCounter = 0;
instructionCounter = 0;
instructionOrigin = null;
currentInstruction = null;
executeInstruction = null;
halfTStateIndex = 0;
machineCycleIndex = 0;
machineCycleCountAfterInstruction = 0;
currentMachineCycle = null;
executeMachineCycle = null;
// Z80CPU_Instruction_Decoder.cs internal state
opcodeTableIndex = 0;
// Z80CPU_ExternalControl.cs internal state
busRequestPending = false;
maskableInterruptPending = false;
nonMaskableInterruptPending = false;
}
private void StartMachineCycle(MachineCycle machineCycle)
{
machineCycleCounter++;
currentMachineCycle = machineCycle;
DecodeMachineCycleExecutionMethod();
}
private void EndMachineCycle()
{
currentMachineCycle = null;
executeMachineCycle = null;
}