uVAX II Memory Board

From: Jerome Fine <jhfine_at_idirect.com>
Date: Fri Feb 2 16:14:41 2001

I have an interesting question. Can this board be used as additional ram
in a PDP-11? If so, how might it be done?

I have a Qbus Memory board that must be from a uVAX II - M7609-AP
with 288 (I hope I counted correctly) memory chips
4256L-15 8726255
A 21-22422-42 R
with the standard male 50 pin header at the top to be connected to a uVAX
CPU.

If my arithmetic is normal, does this make it an 8 MByte memory?

Now, I am no hardware expect, in fact about all I can do with a soldering
iron is to plug it in and unplug it - before it gets too hot and I burn something.

But, is there any way that a regular PDP-11/73 could see this memory
and use it in some manner?

Otherwise...

I don't expect that anyone will want it, but if so, can I swap it for a regular
PDP-11 Qbus memory of 4 MBytes?

Sincerely yours,

Jerome Fine
Received on Fri Feb 02 2001 - 16:14:41 GMT