Jim's Interrupt Entry below:


>
>
>        ORG     04                      ;This is the interrupt vector
>
>        movwf   temp_w                  ;store the contents of the w register
>        swapf   STATUS,w                ;and the status register, so that they
>        bcf     STATUS, RP0             ;(set RAM page 0)
>        movwf   temp_stat               ;can be restored before leaving the
interrupt
>
>        movf    FSR,w
>        movwf   temp_FSR
>
>        movf    pclath,w
>        movwf   temp_lath
>
>

Hi Jim, if you are using a PIC that has unique RAM Registers in Page 1 (and
not shadowed with the values in Page 0), you're going to have to have two
"temp_w"s in your code - each one at the same location in each of the two
pages.  That way the data won't be lost between pages.

PCLATH is NOT a readable Register (it's just writeable).  So instead of
reading it and saving it, you should save the value you are programming in,
into "temp_lath" when PCLATH is being changed.

Good Luck!

Myke
Myke

"We're Starfleet officers, weird is part of the job."

Capt. Catherine Janeway