P1c18f26k20-internal clock set up fail -64mhz

[richard]

when attaching portb to the 74hc595 - then 1 of the port pin lost power.

I'm not really sure what this means , its rather ambiguous
perhaps a schematic diagram (or a photo) of your setup would be in order

[MINHLE]

HI,,
thANKS A LOT RICHARD,

I MOVE TO USE 18F4620, THE PREVIOUS CONF. IS FINE (internal osc*4 = 32 mhz)
the program runs well @40mhz (external osc) then there are problems
i.e. data output randomly- (due to dirty breadboard)
line appears on the screen (same cause above).
i will going back to see the 18f26k20.next week.

thanks again
regards

[Demon]

As requested by others, post your complete code and a schematic of your circuit.

Have you disabled analog features on any pins you use as digital?

Robert

[MINHLE]

HI ALL
THANKS for all
the program actually runs well, but the pause time is not correct and the current supply is not adequate ( due to dirty breadboar...)

at high frequency, some of the port pins is measured = 0, (when the port drives other ic) look like there is no power at all.
the set up is right:

_FOSC_INTIO67_1H
OSCTUNE = $40
OSCCON = $70

the PBADEN = OFF, so the portb is digital I/O
thanks a gain for all

regards