Wanting to use the 16C84 EEPROM data memory, I inserted the following
code into an existing 16C84 program, which is intended to write 12H into
the first location, to try the technique out:

;PUT SOMETHING INTO EEPROM DATA MEMORY

        MOVLW   00H             ;EEPROM ADDRESS TO WRITE TO
        MOVWF   EEADR
        MOVLW   12H             ;EEPROM DATA TO PUT THERE
        MOVWF   EEDATA

;STUFF FROM PAGES 31-32 OF PIC16C84 DATA

        MOVLW   55H
        MOVWF   EECON2
        MOVLW   0AAH
        MOVWF   EECON2
        BSF     EECON1,WR       ;WR = 1
        BSF     EECON1,WREN     ;WREN = 2

After running the program, I put the chip into my programmer and read
the program and EEPROM data memory into the buffers, but the EEPROM data
has not changed. Can someone please tell me what I am doing wrong?

Leon
--
Leon Heller, G1HSM                | "Do not adjust your mind, there is
E-mail leon@lfheller.demon.co.uk  |  a fault in reality": on a wall
Phone: +44 (0)1734 471424         |  many years ago in Oxford.