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February 8th, 2010, 03:38 AM
Fully Assembled Ferguson Big Board I from the collection of Mark Graybill (http://saundby.com). Note the inverted Z-80 CPU IC at U102 is not the correct IC for this location, it was inserted in place of a daughterboard while taking the picture. Do not try to operate a BBI with a Z-80 in this position.