Clearpoint MV2RAM card - Q22 compatible?

[leegleason]

I recently found a Clearpoint memory card, quad sized. It is labeled "MV2RAM". Anyone familiar with this card? The label suggests it is MicroVAX II memory. I was wondering if I could use it in a BA23 with a PDP-11/73. Any ideas?

 

[Hunta]

If the board has an IDC50 connector, then yes - the board is for microVAXs and no - it will not work with the PDP-11.

I have several memory cards for microVAXs (and processor boards too) and tried memory cards with KDJ11-B - it does not see them

 

[bqt]

The MicroVAX II (well, actually all VAXen except the MicroVAX I) have the memory on PMI, and it's not a PMI that is compatible with the KDJ11-B.

It should be pretty obvious. The VAX can address much more than 4MB, which is the addressing limit of the Qbus. So it can't be Qbus memory.