File list (Check if you may need any files):
chp6-IO Port Programming
........................\prog 1 toggle port pin.a51
........................\prog 2 copy from one port to other.a51
........................\prog 3 complement all port all pins.a51
........................\prog 4 complement port 2 pins.a51
........................\prog 5 complement port 2 pin 3.a51
........................\prog 6 square wave.a51
........................\prog 7 switch status.a51
........................\prog 8 switch status on LED.a51
........................\prog 9 microwave oven control.a51