DEC modules in a 4-slot backplane

Adrian Graham witchy at
Wed Jun 1 02:12:30 CDT 2016

On 01/06/2016 07:38, "Lionel Johnson" <lionelj at> wrote:

>> M7270 11/03 CPU
>> M7944 4K RAM (x2)
>> M8027 LP11
>> There's a fault label on the M8027 saying it occasionally drops characters.
>> Question is, anyone know what it was out of?
>> Cheers!
> When I worked on DEC gear we used a few 4-slot backplanes from VT130
> to use in suitcase portable test units, so could be this.

This was my first thought but the VT103 (I assume you meant this) has a
double-height card cage in it. The VT103 is another of my
should've-picked-up-when-given-the-chance-but-didn't things...

Binary Dinosaurs creator/curator - the UK's biggest private home computer

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