Help needed with PDP-11/35 and XXDP problem

From: Henk Gooijen <gooi_at_oce.nl>
Date: Thu Sep 10 00:21:37 1998

Hello readers.

I have two questions which are in a sense related.
I have a problem with my PDP-11/35 and withn XXDP+.

When I boot my 11/35 it reports RT11-SJ (S) V04.00E. This version
runs perfectly. When I try to boot RT11-FB V5.4 the VIRTUAL LED on
the console goes on and at that moment the system hangs.
I did check all the required jumper changes on the other CPU boards
but the memory management unit M7238 was already installed in the
system and the jumpers all seem to be correctly set.
Anyway, when I boot that RT11-FB version on my PDP-11/34 it runs
just fine. Needless to say that both are _real_ machines.
When that RT11 version is booted on the 11/35 the ADDRESS LEDs show
076602 and the DATA LEDs show 177620. The MMU occupies address range
777600-777676. Is this a coincidence ?

Last week I got the RL02 drives connected to the 11/35. I have a
pack with XXDP+ on it and I hoped to run the diagnostics for the
CPU and the MMU. When I have XXDP+ booted (that goes well) and enter
the command "R BKTGD1.BIC" the READY light and on the 11/35 the ADDR
and DATA LEDs blink a few seconds but then the system hangs.
ADDR LEDs show 001156, DATA shows 000767. On the console terminal is
the text "KT11-D EXERCISER DBKTG-D".

Does anybody have any clues on how to proceed?
How do I use XXDP, any manual anywhere ?

TIA,
Henk Gooijen
gooi_at_oce.nl
Received on Thu Sep 10 1998 - 00:21:37 BST