Couple updates...

I forgot to mention one other thing that I tried -- to increase the=20
value of the LED-drive resistors, so less current and hence less noise,=20
but that did not solve it.  This was before I figured out that accessing=20
TMR1H was causing the problem.

However, I found another fix (other than not reading or writing TMR1H=20
altogether)...  apparently syncing the primary and secondary clocks=20
work.  I can read TMR1H (to determine state of the flashing colon), and=20
clock works accurately.

Cheers,
-Neil


On 6/10/2012 10:30 PM, IVP wrote:
> Thanks for the update
>
> What you/we've tried are good investigative measures, a pity
> that the real answer was so out of left field
>
> Joe

--=20
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