Hi Thomas.

> How can you store values greater than 255 in a pic16c84. I need to measure a
> resistor by charging a capacitor through it. The value is between 500 and
> 3000. How can i store this value when the registers are only 8 bit.

Try to use two bytes. One for high byte of result and another for low.
;-)
If low byte is overflowed after operation carry must be added/subtracted
from
high byte and so on.

Other variant is: what precision do you really need ? Probably your
results can
be scaled from 500..3000 range to 0..255 ? Just subtract 500 from
initial range
and divide it by 10 for instance. You will get 10 to 1 compression.

WBR Dmitry.