On Mon, Jul 12, 2010 at 3:39 PM, Bernd Kopriva <bernd at kopriva.de> wrote:
  Hi,
 this is the "The Definicon 68020 Coprocessor", described in Byte 8+9, 1985
 ...
 ... but it wasn't part of Circuit Cellar 
Hmm... I think I have those issues in a closet.  I'll have to go dig
them out.  The M68K family is one of my favorites (in no small part
due to making a living with it between 1984 and 1994).
-ethan