Path: utzoo!censor!geac!lethe!yunexus!ists!helios.physics.utoronto.ca!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!sdd.hp.com!hplabs!hpfcso!rjn
From: rjn@hpfcso.FC.HP.COM (Bob Niland)
Newsgroups: comp.sys.hp
Subject: Re: Attaching backplane expander to 9000-350
Message-ID: <7370319@hpfcso.FC.HP.COM>
Date: 26 Feb 91 04:48:09 GMT
Article-I.D.: hpfcso.7370319
References: <41130@ucbvax.BERKELEY.EDU>
Organization: Hewlett-Packard/FSY Ft.Collins,CO,USA
Lines: 26

re: > Well, given that my 9000-350 does not have any empty slots,...

> We happened to have an HP98568A 8-slot backplane expander here, When
> trying to install it, though I find that the manual (and expander) assume
> that the computer has "short" DIO1 slots, whereas my 350 has long DIO2
> slots.

If all 4 full-width DIO-II slots in your 350 are full, as is likely the
case, what you need is either:
  98568A Option 132   or
  98570A (with or without Option 004, depending on your needs)
Both of these interconnect with the base SPU via the DIO-II bus.

The standard (no Option) 98568A is intended for use with the Model 310, 320
or 330 DIO-I computers.  It will work with DIO-II models, like the 350, if
they have the top DIO-II slot converted to a DIO-I pair via a 98242B kit.
This is not officially supported.

In your case, your slots are probably all occupied by the larger DIO-II
cards:  CPU, RAM, Video, system interface.  There is no kit to convert a
standard 98568A to the Option 132 configuration.  Depending on the vintage
of the 98568A, the number of parts to be changed is significant.

Regards,                                              Hewlett-Packard
Bob Niland      Internet: rjn@FC.HP.COM               3404 East Harmony Road
                UUCP: [hplabs|hpfcse]!hpfcrjn!rjn     Ft Collins CO 80525-9599