17 Jun
2011
17 Jun
'11
5:14 p.m.
Hi Bill,
The 11/40 has jumpers on a lot of the basic boards that have to looked
at in relation to the optional boards (KE11-E M7238, KE11-F M7239,
KT11-D M7236, line clock- M787, and stack limit option. Every option
change require changing jumpers. Every memory set has to have the
right starting address and parity jumpers.
Shorten the bus to cpu and mininal memory, and try a few toggle in
programs. If you have a scope, you can scope the unibus.
good luck, and feel free to send me ant questions.
Paul
On Fri, Jun 17, 2011 at 4:53 PM, B Degnan <billdeg at degnanco.com> wrote:
Running pdp 11/40 power ok. Power on...freezes with
proc and bus lights on and no front panel response. Working to resolve any off the cuff
ideas? Will post details if anyone interested to help.
Bill
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