16F88 and TMR0 Interrupt - where's the fish?

[Bruce]

Try XT_OSC. May be over-driving your 4MHz crystal and producing some odd harmonics?

[flotulopex]

First thing I tried when I noticed...

No change. Just strange.

I even removed the Xtal and set the internal oscillator to 4MHz... Still running appearently very fast.

Have to check.

[Bruce]

Why it appears to be running faster I can't say. What are you placing in OSCCON?

[flotulopex]

I set bits <2:0> to specify the oscillator's mode selection (set in the config Word).

Oooops! Just found I forgot to set the TMR0 prescaler rate in the OPTION_REG register...

Everything is fine now.

Thanks a lot.