[Coco] Kip's Single Board Computer

[John W. Linville]

On Tue, Sep 15, 2015 at 12:15:15PM -0400, RETRO Innovations wrote:
>    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

I'm fairly certain that the clock problem is caused by the lack of
RC circuit on the RESET^ line, as I described in my earlier note...do
I get a board too? :-)

John
-- 
John W. Linville		Someday the world will need a hero, and you
linville at tuxdriver.com			might be all we have.  Be ready.