F5 Reset to power on condition and wait for enable command. F6 Reset to power on condition and begin scanning keyboard. FB Set an individual key to autorepeat. Next byte contains the scan code of the desired key. FC Set an individual key to generate up and down codes.
Next byte contains the scan code of the desired key.
FD Set an individual key to generate only down codes. Next byte contains the scan code of the desired key. FE Resend last result. Use this command if there is an error receiving data. FF Reset keyboard to power on state and start the self-test.