7 Dec
2002
7 Dec
'02
3:02 a.m.
John Dundas wrote:
Anyone have the jumper settings for a 4MB MSV11-QC
(M7551-CF) memory
board for a PDP-11? I just got one, but don't know how the DIP
switches and jumpers should be set. A PDF of the User Guide would be
even better, but help or pointers with the jumpers/switches would be
great.
Jerome Fine replies:
In general, there should never be a reason to alter the
jumpers. Since 4 MBytes is the maximum allowed for
the PDP-11, the hardware would almost always be set
to use all of the memory. There is probably a bank of
jumpers for the starting address and a second for the
ending address. The starting address will probably be
empty - for zero. The ending address could be full or
empty. I suggest that if you can't find a manual for the
settings to just use the board as is. 99.9% of the time,
I would expect the setting to reflect use of all of the
memory - if that is what you wish - and I can't really
understand any other option for 99.9% of the cases.
Sincerely yours,
Jerome Fine
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