4 Apr
2013
4 Apr
'13
1:19 p.m.
On Apr 4, 2013, at 7:01 AM, David Riley <fraveydank at gmail.com> wrote:
On Apr 3, 2013, at 19:21, Roe Peterson <roe at
liveblockauctions.com> wrote:
Thanks. It's a BA11-S, the H7861 power supply is a dead giveaway. I'll install
the 83 after work. AKAIK, the memory cards actually get installed _above_ the CPU, with
the unibus stuff below.
I'm looking at upgrading a pdp11/73 in a pdp11/23plus box to an 11/83. Is there a
simple multimeter test I can do on a qbus slot to determine if it is Q/Q -- which i
understand can be serpentine, or Q/CD, which are PMI capable for the 11/83 CPU.
Easier: find the model number of your backplane here:
http://www.dunnington.u-net.com/public/PDP-11/QBus_chassis
If you have a BA23 or BA11-S chassis, you ought to be set.
- Dave