ID'ing Q-Bus cards.

[Glen Slick]

On Fri, Jan 2, 2009 at 5:30 AM, Andrew Back <andrew at smokebelch.org> wrote:
> I have a PDP11/53, which on inspection contains 2x M7651:
>
> - One cabled to a same-sized card made by Logica and marked 3490/300
> - One cabled to a double-sized card marked 3350/304 (assuming Logica)
>
> Both these cards appear to be SCSI controllers, but does anyone know any
> more about them? And I'm wondering if there might be some hoops to jump
> through in their use, E.g. only support certain drives or require a patched
> O/S.
>

The first reference you should check is pdp11-field-guide.txt which
lists the M7651 as the  DRV11-WA General-Purpose DMA Interface.  You
can find the manual by searching for EK-DRVWA-UG

The other boards to which they are attached are most likely special
purpose application boards and not any sort of general purpose SCSI
controllers.