Dave Turner wrote :

> I have set the osc to INTRC-CLKOUT, which should be about 8MHz, but
> with the MPLAB SIM, I have to set the processor speed to about 20Khz
> to get near to the speed I'm using.  Am I setting up the clock
> incorrectly?  All I changed was the __CONFIG.  Is there another place
> to change the clock speed?

And you don't think that the fact that "about 20Khz" happens to be quite
close to 31.25 Khz would ring a bell ??

As I wrote in another post :

--  Have you setup OSCCON correctly ?
--  I think that 31.25 Khz is the POR (power on) default.

Try to set SIM to (something closer to) 31.25 and see if you
don't get the same time as you see in your hardware.

Then setup OSCCON correctly to get 8Mhz.

And yes, this actualy means that the PIC will be running
slowly *until* you set OSCCON in the code. By changing
OSCON you can "gear" the PIC up and down in 8 steps
between 8 Mhz and 31.25 Khz as you like.

Jan-Erik.



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