http://www.picbasic.co.uk/forum/show...ghlight=OSCCAL

This thread indicates to have MCLR=off if using the internal oscillator and it doesn't give an explaination of why, but that contradicts what has been said here that is doesn't matter.

So, while things work I have no understand of why they work so in the future I may have a problem and not know why I'm having it.

So, it still boils down to this. Why does the datasheet for the 12F629 say the oscillator is disabled when MCLR is asserted? If it is disabled then NOTHING should work if I apply 5v to that MCLR pin and yet it works.

What clock is ticking away if everything is disabled?

I feel like I am going in circles with this trying to see an invisible answer.

Bart