[Coco] Kip's Single Board Computer

RETRO Innovations go4retro at go4retro.com
Tue Sep 15 12:15:15 EDT 2015


   The new board, as it were (it's getting less new by the month) is Kip's
   take on Searle's 6 IC 6809.  His is 8, and offers some interesting
   enhancement options.

   But, when I try to bring the board up, I'm struggling:

     * there is no signal on Q or E.
     * Nothing of interest on the crystal pins (though my Tek could be
       interfering with the feedback).
     * I took the CPU off the board, breadboarded with HALT and RESET
       high, crystal and caps installed, and still no Q or E.  I tried a
       known working 6809 from my SuperPET, and nothing.

   I'm new to 6809/6309, so I am not sure where to start.  I am sure once
   I get the CPU running, the rest will be quick work, but the fact that I
   can't seem to get a 6809 by itself to generate Q and E bothers me and
   lowers my confidence that the board is ready to be debugged.

   Kip, send the man a board.  I'll buy it for him.

   Jim


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