2 Feb
2001
2 Feb
'01
9:20 a.m.
On February 2, Jerome Fine wrote:
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?
It's an 8mb board, yes. And no, it won't work on a pdp11...the PMI
(Private Memory Interconnect) connector at the top of the board is how
it talks to the MicroVAX-II CPU, while [most] qbus pdp11 systems talk
to their memory via Qbus.
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?
I doubt you'll have much luck with this idea...MicroVAX-II memory
boards are all over the place, while 4mb Qbus pdp11 memory bards are
getting hard to find.
Sorry if I busted your bubble...
-Dave McGuire