Right before I go to eBay with this - I know there are a couple or three Musicians here - I have a 1977 Yamaha CS-80 8-voice polyphonic synth for sale. I thought to take a chance on Classiccmp - one never knows... If you know what this is, and you're interested, please contact me off-list for more details. I have the Service Manual for it, which is now made purely of Unobtanium. Hey - it *does* have a special-pupose computer chip in it: the Keyboard Scanner / Note Multiplexer is a very early CMOS mask-programmed "PLA" sort of thingy... so I'm not too far off-base here. Cheers John