QBUS Memory card config info

Seth Morabito lists at loomcom.com
Sun May 3 18:52:16 CDT 2015

In my recent Qbus haul, I found two non-DEC memory cards:

1. NSC NS23D
2. Dataram 40903 Rev G

Both are fully populatd with 2MB (1MW) of 256Kb x 1 chips, and both
are configured for address 0.

I'd love to use both together in one of my systems, but I can't find
a scrap of documentation anywhere, so I have no idea how to configure
the base address of either card. Disappointing!

Does anyone have docs for either of these beasts?

Best Wishes,


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