Mystery board and drives

From: Stan Pietkiewicz <stanp_at_storm.ca>
Date: Sun May 9 15:40:06 1999

Pete Turnbull wrote:

> On May 8, 23:41, Stan Pietkiewicz wrote:
> > Subject: Mystery board and drives
> > In my scrounging trips, I've managed to pick up the following mysteries:
> >
> > 1) A quad-height Qbus?? (Unibus?) Emulex TU03. I first thought this
> > might be a SCSI controller, but a closer look indicates that it probably
> > isn't. This board is populated with mostly 14 and 16 pin DIPs, a couple
> > PALs, 40 pin DIPs, and 28 pin PROMs. My next guess would be a tape
> > drive interface.....
>
> Almost certainly Q-bus, since it's quad-height (all the Unibus Emulex
> controllers I've seen are hex), and T means Tape. I'd guess it's a TU10
> emulator or similar. What are the connectors like? If it has 2 x 50-way
> headers, it'll be a Pertec interface.

They are indeed 2 * 50 pin headers, with a 4 position switch between them...
Another reply suggests it would be Unibus...

I'm not planning on plugging it into my MicroVAX 3600 until I know for sure....

>
>
> BTW, was somebody looking for the Pertec interface pinouts a few days ago?
> I found the ASCII and PostScript files if anyone needs them...
>
> > 2) A couple of Seagate hard drives, complete with a power supply on a
> > mounting channel. These are labelled: Equipment No.: PA4B2A, and on the
> > drive itself: 975002-001. What are these?? I'm pretty sure there not
> > SCSI, but other than that, I'm puzzled....
>
> 975002 looks like an IPI or SMD drive number, but it doesn't quite match
> any in my lists. Are there any other numbers? What kind of connectors are
> on it?

The interface connectors are a 50 pin ribbon connector. Other numbers... none
that I found...
Another message suggests that they are IPI-2...

>
>
> --
>
> Pete Peter Turnbull
> Dept. of Computer Science
> University of York
Received on Sun May 09 1999 - 15:40:06 BST