The Museum of HP Calculators
HP Forum Archive 05
[ Return to Index | Top of Index ]
Message #1 Posted by Chris Leyson on 28 Dec 2000, 5:44 a.m.
Hi everyone and a Happy New Year. I have an HP3585A spectrum
analyser. A really nice piece of kit but no longer supported
by HP. The service manual claims that the microprocesor used
is the same as in the HP9825 calculator. It's an 82 pin hybrid mounted on a heatsink with 16-bit data and address bus. Part is marked 09825-67907. Anybody got any data on this part, timing diagrams or op-code map ?
|Re: HP Microprocessors|
Message #2 Posted by Eric Smith on 20 Jan 2001, 1:34 a.m.,
in response to message #1 by Chris Leyson
It's a three-chip processor. The "main" chip is the BPC,
or Binary Processor Chip. In some equipment, such as
the 9872 plotters, the BPC chip is used alone rather than
as part of a hybrid.
The only publicly available info on it is in the HP 9835
and HP 9845 assembler ROM manuals. The architecture is
sort of like the HP 2116 minicomputer, but differs in
all the details.
No electrical specs or timing info are available.
Return to Index | Top of Index ]
Go back to the main exhibit hall