TMR0 Pre Scale Question

[shawn]

Ok guys that helps allot. So every PBP instruction takes at least 4 clock cycles or the tmr0 is just set to increment every 4 clock cycles. Also maybe I missed it in the data sheets or I am just supposed to know this answer but what is the difference between low and high priority interrupts. So far I have just been disabling the priority level with RCON.7 = 0. The reason I ask is because I am going to be using the TMR0 Interrupt, the INT0, INT1,INT2 interrupt, and the usart continuous receiver interrupt. I've used all of them before by them selfs. I've used some of them together, but not all of them together in the same program. Oh ya I am using the on interrupt command in PBP. Once I have a good hand on that I may try to venture into (forgive me if I name the wrong creator of the program) Darrels instant interrupt program. I'm using the Pic 18F458 if that matters.

Thanks again
Shawn

[shawn]

Maybe I found an answer to the priority level question. Will a high priority interrupt wake the processor out of sleep mode and a low priority interrupt will not.
New Question for ya all.
Int2 on a Pic 18f458 says that the edge trigger is selectable in the INTCON2 registers. I'm not seeing it in there. INT0 and INT1 are in there apparently int2 is rising edge trigger only.

Shawn

[Kamikaze47]

A high priority interrupt can interrupt a low priority interrupt, but not vice versa.