Date   : Mon, 11 Aug 2014 14:52:18 +0200
From   : eelco@... (Eelco Huininga)
Subject: 68000 Second Processor

Hi Gregory,

Now this looks like an interesting piece of equipment, I've never seen 
this one before. Looks like it's all made on a breadboard, perhaps as a 
prototype.
On the top left you can see a 40-pin IDC connector labelled TUBE. Also 
on the top left are two 6522's, probably used for the TUBE interface, 
which would also mean that it's not using the Acorn propietary TUBE 
protocol.
The other interface bus might be a VMEbus connector.

Would be nice to get some feedback from the original designer of this 
board, or to get a dump of the contents of the EPROM's...

Cheers,
Eelco


Gregory Allen wrote on 11-8-2014 11:40:
> Hi all,
> I've been a member of this list for years now, but I've never posted 
> before. I was looking on bay today when I came across this strange 
> mc68k second processor: 
> http://www.ebay.co.uk/itm/Acorn-BBC-Micro-Computer-68000-Second-Processor-/201147898033?pt=UK_VintageComputing_RL&hash=item2ed55958b1
>
> Any thoughts as to what this might have been used for?
> Regards
>
> -- 
> *Greg Allen*
>
>     Apprentice IT Support
>
>     PC Upgrades, Customisation and Advice
>
>     Farm Worker
>
> /Available for hire/
>
>
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