7 Jan
2006
7 Jan
'06
12:30 p.m.
Contacts or loosen screws can fly through the BA-box in
case of your 11/24
during transport and can provoke short circuits while powering up.
Always inspect your machine carefully, watch out for loosen parts and check
the configuration of your system BEFORE aplying power to it.
Don't worry, Pierre, I did all that as soon as I got it home, well
before plugging it in. But thanks for the reminder.
I have now inventoried the cards and have the following:
1 M7133 KDF11-UA 11/24 CPU with line clock and 2 SLU
1 M7134 KT-24 Unibus map, extension to 22 bits
1 M8743 (ECC RAM, either 512 Kb or 1 Mbyte)
2 M8722 (ECC Memory either 128 Kb or 256 Kb each)
1 M8188 FPF11 floating point processor
1 M7762 RL11 disk controller RL01/02
1 M7258 LP11 printer controller
1 DSD A2130-6 <---------- (what is this? Floppy controller?)
4 M7819 DZ11-A eight RS232 ports each
1 M920 Unibus connector
1 M7297 RH11 MASSBUS Parity Control
1 M7296 RH11 MASSBUS Control & Status Registers
1 M7295 RH11A MASSBUS Bus Controller
1 M7294 RH11 MASSBUS Data Buffer and Control
3 M5904 RH11 MASSBUS Control Transceivers
1 M9300 Unibus terminator
1 M9312 Bootstrap Terminator
According to the PDP11 Bus Handbook the Massbus is for
transferring blocks of data at high speed (between mass storage
devices like disks or tapes?)
When I flip the BOOT switch the front panel RUN light comes on
briefly and goes out again. Similar behavior to the 11/23+ when it
enters ODT mode. There is a green LED on each MOS memory board
which is lit, and a row of three (status?) LED's on the CPU, the
rearmost staying lit and the other two dark. Time to RTFM I guess
:) but I'll bet I can hook up a terminal to the SLU on the CPU
board and have it talk to me!
I wonder, since there is an RL controller card,
-Charles