I found a data sheet for a 27C32B. It programs at 12.5 volts. The data sheet mentions that programming voltages above 14 volts will damage the chip. So - it looks like I blew up this EPROM by trying to program it as a 2732 and 2732A. -- Ludis Langens ludis (at) cruzers (dot) com Mac, Fiero, & engine controller goodies: http://www.cruzers.com/~ludis/