I picked up a BIT90 today. I have never seen one before other than on a couple of computer museums on the web. Unfortunately the unit came into the thrift shop as the bare system unit, no power supply, nothing else at all. I would appreciate any information on power requirements and power pin out (a compatible power supply from another micro?). I know it takes ColecoVision cartridges from www.zock.com/8-Bit/D_Bit90.HTML, which is the best site I have found (out of just a few in all). Thanks Phil (Brisbane, Australia)