23 Jan
1998
23 Jan
'98
2:29 a.m.
At 09:12 PM 1/22/98 -0800, you wrote:
Joe <rigdonj(a)intellistar.net> wrote:
This was much bigger than a mulltiprogrammer. I've seen a bunch of those
and they're only about 6 or 8" tall. This appeared to be much taller. The
multiprommers are operated by an exteranl computer. Apparently these
contain a computer similar to a HP 1000.
Got this from a friend of mine:
I've never heard of an HP2250 either, but according to the 1983 HP
catalog, the HP2250A is a "Measurement and Control Processor." It's
designed to work with the HP1000 and HP9800 computers via an HP-IB
[snip]
1983 is probably about right -- it's not in the 1980 or 1981
Measurement/Computation catalogs. Instead there is something called
a 2240A that seems to be about the same idea.
Hmm. I guess I don't quite understand how this is substantially
different from a 6940B or 6942A Multiprogrammer, but then I haven't
worked with any of them. Well, the 694xs get a few more pages in the
catalogs, look like they might have a wider range of I/O cards, and I
gather the 6940B may be what you needed to resort to for
faster-than-HP-IB communications with the controlling host processor
(it can use a 16-bit parallel interface).
Joe, did you tell me (in private mail) that this thing was mounted in
a rack? There's a picture in the 1981 catalog of something called a
I couldn't see the front or back so I don't know if it's rack mounted or
not, it appears to be able the same width as a rack.
System 9030 that looks like a desk-height rack with
woodgrain top and
wheels, and the accompanying paragraph of text:
"The HP 2240 can be installed in a roll-around cabinet with plug
connectors for portable use. Adding a controller (HP 9825, 9835, or
9845) and available exercising software, the preconfigured combination
is called the HP System 9030. Contact your local HP office for
information about specific ordering constraints."
There was a bunch of interfaces and disk drives around for the 98xx
machines so that may be what this is. It looke like it may have a keyboard
sticking out and a CRT mounted above so it may have a 9845 installed. I'm
going to have to go back there when I'm not rushed and take a better look.
The picture has what I'd guess to be a 9835A sitting on the woodgrain
top, presumably looking like the expected controller.
If the 2250A is anything like the 2240A, it's a smallish 19"
rack-mountable box, maybe 12" tall. Meaning that about half the
System 9030 rack is taken up with something else, maybe the "plug
connectors" mentioned above?
A 9845 or 9835B with a CRT is pretty good size just by itself.
Joe
-Frank McConnell