At 11:52 AM 5/3/04 -0600, you wrote:
>Christian Fandt wrote:
>
>> 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,
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
>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
>
Received on Mon May 03 2004 - 15:19:23 BST