At 12:23 PM 3/28/03 -0800, Ethan wrote:
--- Joe <rigdonj(a)cfl.rr.com> wrote:
First, what's the significance of the FC on
the model number?
No idea. If this were "Suspended", I'd guess "Filter Computer"
:-)
I wondered if it had anything to do with the front panel.
Second, I went through chassis and here's a
list of the cards in it.
Slot: Card:
4 M7231D H Data Path
7 CI M60 made by QED Q
9 90 CPU made by QED has DCJ11-AA IC Q
11 MS 95 made by QED H
Neat - plenty of horsepower there!
If you say so. Can you tell me more?
15-16 M920 U
19-20 M920 U
Jumper cards.
What do they do, jumper the CPU section to memory section?
Interesting comment about them here:
http://www.varx.com/va01005.html
I think they mean that in modern Unibus designs, the cable length
is suboptimal to prevent signal reflection. The newer jumper blocks
are taller with more mylar cable folded up inside. Consult DEC's
Unibus Handbook for details on Unibus configuration. I figure if
the machine has them now, they'll be OK, but if all you want to do
is hook some DD11CKs and DD11DKs together, go with the newer ones.
16 M7254 Q
17 M7255 Q
18 M7256 Q
19 M7257 Q
RK11D (including the backplane)
22 M7762 H
RL11 (RL01/RL02 controller - up to 4 drives)
27 M7228 Q
KW11-P real-time clock.
29 M7800 Q
31 M7800 Q
33 M7800 Q
DL-11E serial boards
> 36 M7911 Q TMB11 TAPE CONTROL 1
> 37 M7912 H TMB11 TAPE CONTROL 1 Hex
I looked these two up and it looks like they're both tape controllers. Is that
right? Why TWO controllers? There was both a PT reader/punch and mag tape drive on the
system is that why it has two controllers? (Does each controller only handle one device?)
38 M7821 fits
in single slot (#2) SINGLE HEIGHT INTERRUPT CONTROL BD
38 M105 fits in single slot (#3)
38 M796 fits in single slot (#4) SINGLE HEIGHT UNIBUS MASTER CONTROL BD
38 M930 U bus terminator? installed in bottom two slots
39 M795 installed u[pside down. Is this correct?
TS03 controller (the entire backplane - these aren't SPC (Small Peripheral
Controller) slots).
What's a TS-03 controller?
Not sure about the M795 being upside-down. I'd
check that before applying power. Sometimes non-DEC
goobs aren't paying
attention when they randomly pull boards.
That's what I thought but I thought I'd ask the experts.
Joe