Quote: Originally Posted by
danwheeler 
One thing I don't like about this setup is that when Windows is first booting, the amp flickers on and off as Windows initializes the serial port/pin 4.
Windows is scanning for plug and play devices on the serial port, so that's why your amps flickers on/off rapidly. I solved this by modifying my windows registry so windows would no longer search for any devices on the specified com port. Older window products it was easy to accomplish the same thing inside the boot.ini file, but windows XP no longer accepts the simple method. Time to google the answer.