Snagged a Datapoint 1800 this week, and in my brief examination the power supply's going to need some work -- the -5V and -12V rails are dead. Before I get too far into this, does anyone happen to have any schematics for this thing? There's some decent stuff on Bitsavers (as per usual) but nothing service-manual level. Looks like a neat machine, much like the earlier 2200; an 8-bit CPU built from discrete TTL. I'm missing the external 8" drive unit, unfortunately, (and it has a custom bus interface) so I may never get it to do anything too interesting but I'd love to get the main unit running. Meanwhile, time to clean this thing out from head to toe, it's quite filthy... - Josh