changing osc on the fly

[rmteo]

On the 16F877/876 for example, Timer0 can increment on the rising or falling edge of pin RA4/TOCKI
That way you can use an RC osc to control TIMER0 so varying the OSC for the microcontroller will
change the speed of the pause delay, but not the speed of TIMER0.
Art.

That is a little different from this.

Make a delay loop in picbasic and count the number of ticks a hardware timer
makes during the delay loop.. and then the hardware timer value will be
different for different clock speeds.