Last (I hope) question for this matter. In the 16F886-dataheet (DS41291-D), page 77, there's a note about using the internal oscillator saying "The oscillator requires a start-up and stabilization time before use. Thus, T1OSCEN should be set and a suitable delay observed prior to enabling Timer1". The term "suitable delay" does really not tell me anything. Are we talking about 2 msec or 2 secs here? I don't have an oscilloscope either so I cannot "observe" the waveform. Anyhow, if I parse the datasheet correct, I'm supposed to do something like this: banksel T1CON ; Setup Timer1 bsf T1CON, T1OSCEN ; Enable internal oscillator bsf T1CON, TMR1CS ; Use external clock (built-in 32kHz) call some_nice_delay_thingie bsf T1CON, TMR1ON ; Start timer1 -- - Rikard - http://bos.hack.org/cv/ -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist