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I've got this MAXIT 256KB Memory Board but no manual. With four 8-bit DIP switches I'd rather not try shotgunning a configuration. If you have any info or insight on configuring this card I would appreciate it. Initially the plan was to use this card to backfill a 256KB PC, but having looked...

Checking this out has been on my list for a while. I've not been able to find much info on this particular device. Bitsavers provides info to identify the base unit as a Ungermann-Bass Network Storage Module (NSM) model 3121A NSM-1. Bottom of page 8...

I've had this Tandy 2810HD since the early 90s. The only 286 I've owned. Last year I pulled it out knowing the primary battery would need to be replaced and hoping the CMOS battery had kept its seal. The primary battery was in worse shape than I expected so I put it away until this weekend...

I've got a Peripheral Technology PT69-2 circa 1985 on the bench. Before I power it up with the original supply I'd like to check and see if anyone here has experience with this design. The supply appears to be based on a MB3759 Switching Controller with 4 outputs, +5@6A, +12@3A, -5@1A and...

Hello everyone. Finally finding some time to work on some old hardware. Don't have much in the way of PC/x86 systems. Mostly a hodgepodge of STD Bus, Multibus, S-100, SBC's and non-x86 computers. I'm currently working on a Peripheral Technology PT69-2 circa 1985, don't know if the power supply...