Hi Folks, I recently came across a Honeywell DDP-516 computer. I'm currently resurrecting the system. That basically means assembling the pieces I got and fixing minor issues. The most work comes from missing mounting hardware :-( The system came with a paper tape reader interface. And a paper tape punch interface. I have schematics for the reader interface. --- But I'm desperately looking for the paper tape punch interface schematics! Does anyone have these? Al? Bill? CHM? Someone else? There's also another DDP-516 owner who would like to get hold of these schematics. I have no information about that interface. Only the programming interface is known. And it is not the same interface module as used in the H316. The H316 interface has PTP and PTR in one and uses completely different ?PACs. BTW: I could need some spare ?PACs to fix a memory (so far at least one CM006). Will write a separate post after having checked out the system, listing all I'm looking for. Best wishes, Philipp :-) -- http://www.hachti.de