Hi,
sorry, my fault: i have just looked up the first reference in Google,
instead of rechecking ...
... it should be described in Byte, 7+8, 1986
Ciao Bernd
Richard Cini wrote:
  I pulled them out and looked. 8/1985 (vol 10, iss. 8)
contains the
 following:
 * Build the BASIC-52
 * The DSI-32 coprocessor board (National 32032 processor)
 * An introductory article on the Amiga.
 The 9/1985 issue (vol 10, iss. 9) contains the following:
 * Build the HD64180 Z80 system
 * DSI-32 part 2
 * EGO home-built CPU
 Now, having said that, I have a small database of articles that I keep, so I
 looked for 68k SBC-like articles. There were two articles that discussed the
 chip itself, one that discussed the MECB Educational Board, one for the
 VU68k SBC (Jan 1984), and a 68k processor comparison discussion.
 So, I pulled the VU68k issue and indeed it is a 68k SBC built on a Vector
 S100 card and uses only 15 chips. It doesn't appear that it uses the S100
 buss for anything other than power. It also has a monitor program which
 looks pretty good from the command summary but alas, no code.
 I'm going to be traveling for a week or so but when I come back I can scan
 it if people are interested.
 Rich
 On 7/12/10 3:44 PM, "Ethan Dicks"<ethan.dicks at gmail.com>  wrote:
  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
       
 Rich
 --
 Rich Cini
 Collector of Classic Computers
 Build Master and lead engineer, Altair32 Emulator
 
http://www.altair32.com
 http://www.classiccmp.org/cini