Unknown Z80 CPU board and backplane ID anyone?

Mike Niswonger mike.niswonger at cox.net
Mon Jul 30 14:37:42 CDT 2018

Don't know the system, but the logo is "Varian Associates"...

     -- Mike Niswonger

On 07/30/2018 12:27 PM, Adrian Graham via cctalk wrote:
> Hi folks,
> A friend of mine in the UK is looking for any info on the following boards. The CPU board is marked ‘VA 03-907023-00’ and features a Z80 with 16K RAM and an 18.432MHz crystal. The backplane is also VA and has 11 132-pin slots that aren’t all identical implying usage for different cards in those locations. Voltages are +5/-5/+12V.
> Pics:
> http://www.binarydinosaurs.co.uk/tynemouthsw_2018-Jul-30.jpg <http://www.binarydinosaurs.co.uk/tynemouthsw_2018-Jul-30.jpg>
> http://www.binarydinosaurs.co.uk/tynemouthsw_2018-Jul-30-1.jpg <http://www.binarydinosaurs.co.uk/tynemouthsw_2018-Jul-30-1.jpg>
> http://www.binarydinosaurs.co.uk/tynemouthsw_2018-Jul-30-2.jpg <http://www.binarydinosaurs.co.uk/tynemouthsw_2018-Jul-30-2.jpg>
> http://www.binarydinosaurs.co.uk/tynemouthsw_2018-Jul-30-3.jpg <http://www.binarydinosaurs.co.uk/tynemouthsw_2018-Jul-30-3.jpg>
> My duckduckgo-fu has let me down.
> Cheers!

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