Multibus ST-506/QIC-02 (was: Re: SGI IRIS 1400 ...)

From: Tothwolf <>
Date: Thu Jul 18 23:09:00 2002

On Thu, 18 Jul 2002, Tothwolf wrote:

> The SGI sticker under the front panel on this system shows it as serial
> number 95 (same as on a rear sticker), and all the boards installed in
> the card cage (with the exception of the ST-506 interface) appear to
> match the numbers on that sticker. I'm kinda wondering if someone might
> have used this 1400 as a source for a spare ST-506 interface, but I'll
> probably never know. The ST-506 interface thats currently installed in
> this system appears to be of 3rd party origin, though maybe all of the
> ST-506 interface boards for the 1x00 and 2x00 systems were.

I double checked all the board numbers, and everything but the ST-506
interface does indeed match the build/maintenance sticker. The tag from
that board states "Removed from IRIS Suspect U/S - no diagram". The 'U/S'
might actually be 'U/5', but it is somewhat hard to read. The board is a
standard Multibus board. It was made by Data Systems Design (Qualogy) and
has a part number of 805215-08. Does anyone have a databook or even prints
for this board? I'm going to assume for now that there is indeed something
wrong with it, since it appears someone "borrowed" the original ST-506
interface from this 1400 for another system. This particular board might
have come from a later IRIS system, but it appears the 2000s and later
used a 5217 instead of a 5215.

Received on Thu Jul 18 2002 - 23:09:00 BST

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