I have been playing around with a collection of old Flip Chips that I have and put together a VC8/I compatible scope controller for my PDP8/e. You can find a page about it here http://www.chd.dyndns.org/pdp8/VC8/ The only reason this was possible was because I had two 10-bit D/A converters (A618), the rest of the modules are pretty common. Thanks to David Gesswein for some test programs. -chuck