Date   : Mon, 20 Aug 2007 21:16:55 +0100
From   : bbcmailinglist@... (Ian Wolstenholme)
Subject: Marconi Trackerball Pinouts

Does anyone have the user-port connector pinouts
for the Marconi Trackerball?  I've been contacted by
someone building a Domesday Machine using a Marconi
Trackerball which has an analogue port connector rather
than the user port connector and he wants to swap this
for a 20-way IDC for the user port.

Apparently it's the same trackerball as my own one, viz:

http://www.beebmaster.co.uk/Domesday/Pics/TBall7big.jpg

but I can't make it out from the picture and the actual
hardware is currently inaccessible!


Best wishes,



Ian