Stuck on porting code to 18F4520

[Scampy]

Henrik, thanks for the suggestion.

I'm terrible at understanding datasheets, so can you confirm if I've understood this ?

The Timer0 module is controlled by the T0CON register,bit 0-2 sets the pre-scaler, so to get the pre-scaler value 256 required these bits are set to 1. Looking at the the other options would setting this register to 1110111 be correct to

[1]enable timer0, [1]set to 8bit timer, [1]use the external xtal, [0]assign to use prescaller and use the output, [111]set prescaler value to 256

Regards

Malcolm


EDIT - I've tried DEFINE OSC 20 and all I get on the LCD display are two lines of solid blocks (which normally happens when the pic doesn't run) - or is it because there is no time for the PIC to action the LCDout instruction because there is no time between the timer tripping over ?