View Full Version : 512k Memory expansion card switches

July 28th, 2010, 11:38 AM
So I have this 512k memory expansion card that I would like to put in my 5170. It's an IBM 1501518 card.
The trouble is, it's not working at all and I'm having a hard time finding any documentation for the card. It has a total of 16 switches, 8 for each bank, and I have no idea how to set them. The current settings sure don't seem to work.

Does anyone have something like an installation manual for this thing?

Other than this card, I also have an EV138 (128k, which works) and a Quadram Quadboard 384, but I would prefer using this card. Info on the Quadram card is welcome too though!

July 28th, 2010, 12:29 PM
modem7 has kindly posted scans of the Options and Adapters IBM manuals. You'll probably find your card listed here (http://members.dodo.com.au/~slappanel555/oa/oa.htm).

July 28th, 2010, 01:03 PM
Cool, thanks for the link, that helped a lot because it's actually working now!