DEC QBUS Backplanes
jsw at ieee.org
Fri Apr 17 21:08:48 CDT 2020
We had a few third party backplanes arranged like this. This allowed
them to put a small MFM hard drive or 8 inch floppy in empty area next
to the 4x2 (2x4?) slots of rack-mount 3U or 4U sized unit. I don't
recall any that were a mix of A-B, C-D. Ours were A-B, A-B.
On 4/17/20 8:48 PM, Nigel Johnson via cctalk wrote:
> The actual sockets were always labelled with Digital's trademarks, but
> they sold them to OEMs to do what they like with them. We OEM'd for
> the Components Group, at one time placed a million dollar order of
> stuff including boxes of those backplane sockets!
> On 17/04/2020 21:40, Paul Anderson via cctalk wrote:
>> I remember the VT72 had a non-standard backplane in it, but I don't
>> remember the details.
>> On Fri, Apr 17, 2020 at 8:10 PM Bill Gunshannon via cctalk <
>> cctalk at classiccmp.org> wrote:
>>> On 4/17/20 8:36 PM, Chris Zach via cctalk wrote:
>>>> Hm. Plessy backplane?
>>> No name on the phenolic board part but the QBUS sockets are labeled
>>> "Digital Equipment Corporation".
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