[Coco] Kip's Single Board Computer

RETRO Innovations go4retro at go4retro.com
Thu Sep 17 22:39:17 EDT 2015


On 9/15/2015 12:28 PM, John W. Linville wrote:
> Anyway, I would suggest something approaching 100mS.  Since Kip seems
> to have a 2.2Kohm pull-up on RESET^, maybe a 47uF capacitor from
> there to ground?  Of course, that ignores the R10 and LED path...you
> may have to try some different cap values if that doesn't work...
I pulled the 6309c and put it on a breadboard with 10K pullups on NMI, 
IRQ, MRDY, HALT, RESET, etc.  I put a 10uF on RESET as well and powered 
it up...

Nothing. :-(

I tried my 6809 as well, to the same effect.  I don't doubt your advice, 
but it looks like I have more I need to do to get this CPU to run.

Jim


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