3 May
2004
3 May
'04
8:19 a.m.
At 11:52 AM 5/3/04 -0600, you wrote:
Christian Fandt wrote:
I don't know anything about the 250 but the HP 9000/520 was the
designated replacement for the 9845. Apparently the 520 had problems was
very late being released and was not a success. Now they're pretty rare. I
have one but never did anything with it and don't know much about it. IIRC
Frank McConnall also has one and knows a lot more about it. I'm not sure
what kind of processor was in the 520 but I don't think it was a standard
CPU like the 680x0 that was used in the 9000/200 and 300s.
so I would suspect the same processor set -- but so many
Could you, Bill McD., or any other folks
who've joined the list in the
past several years, shed more light on the HP 9825 CPU and others
around that time? Al Kossow's statement wondering whether info is
extant on HP's microprocessors is right on the money for me. Bill's
message, copied below, is a good bit of information that I had not
known to now. Thanks! (A BPC manual was available??!!! Scan that
sucker if found!!)
...snip...snip...snip
Regards, Chris F.
Two quick hits looking on google for "HP BPC Processor" -- clears up at
least a couple of the
questions relation to where this processor was originally used...
http://www.cpu-museum.com/5061_e.htm
-- this link specifically mentions this as the processor for
the 9825/9835/9845 processors -- see also Joe R's
reply to your message...
http://www.hpmuseum.org/tech9825.htm
A different HP 250 hit:
http://www.ylem.co.uk/hp250.asp
The eloquence page mentions specifically the HP250 as a follow-on to
the HP 9845, things were re-invented over and over again at HP
it's always hard to
say for
sure...
Regarding the 64000:
As I probe my memory, it seems to me that I remember that the BPC
chips we used in the 64000 were specially constructed for us and left
the BCD arithmetic chip off the hybrid, so there were only the BPC
chip and the IOP present in the hybrid package...
That rings a bell with me too. I think I remember reading that in one of
the HP Journals that had an article about the 64000.
Joe
Just a vague memory...
Bill