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If you had read my other question , you'll know I've spent this weekend putting together a 6502 CPU emulator as a programming exercise. The CPU emulator is mostly complete, and seems to be fairly accurate from my limited testing, however it is running incredibly fast, and I want to throttle it down to the actual clock speed of the machine. My current test loop is this: // Just loop infinitely. while (1 == 1) { CPU.ClockCyclesBeforeNext--; if (CPU.ClockCyclesBeforeNext <= 0) { // Find out how many clock cycles this instruction will take CPU.ClockCyclesBeforeNext = CPU.OpcodeMapper.Map[CPU.Memory[CPU.PC]].CpuCycles; // Run the instruction CPU.ExecuteInstruction(CPU.Memory[CPU.PC]); // Debugging Info CPU.DumpDebug(); Console.WriteLine(CPU.OpcodeMapper.Map[CPU.Memory[CPU.PC]].ArgumentLength); // Move to next instruction CPU.PC += 1 + CPU.OpcodeMapper.Map[CPU.Memory[CPU.PC]].ArgumentLength; } } As you can tell, each opcode takes a specific amount of time to complete, so I do not run the next instruction until I count down the CPU Cycle clock. This provides proper timing between opcodes, its just that the entire thing runs way to fast. The targeted CPU speed is 1.79mhz, however I'd like whatever solution to the clock issue to keep the speed at 1.79mhz even as I add complexity, so I don't have to adjust it up. Any ideas?

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