Glen, I have the manauals and listings but not online. Diagrams ar available at http://members.lycos.co.uk/leeedavison/z80/mpf1/ . If the machine you have is the 1B then it should have the BASIC EPROM in the second socket (U7). Cheers, Lee. ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________