This is what I use to store EEPROM data.
If writes are done more than approx. 10mS apart then
the 'wtloop' can be deleted.

       bsf status,rp0  ; ram page 1
        bcf eecon1,4    ; clear write completion bit
        bsf eecon1,2    ; set WREN bit = 1
        nop
        movlw 55h       ; eeprom write
        movwf eecon2
        movlw 0xaa
        movwf eecon2
        bsf eecon1,1    ; set WR bit to initiate write
        ;
wtloop  btfss eecon1,4  ; wait until write is finished (~10mS)
        goto wtloop
        ;
        bcf eecon1,2    ; clear WREN bit
        bcf status,rp0  ; ram page 0
        incf eeadr      ; set for next eeprom address


Regards
Tony


Just when I thought I knew it all,
I learned that I didn't.