Greetings,
        Just to let you know, there is a bug in the data provided in

http://www.iaehv.nl/users/pouweha/lcd.htm

in section 4.1.3.9.

This routine is suppose to get address counter content, but as shown, it
will always return zero.  To correct this, the last 5 instructions
could be changed to:

        BSF     STATUS, RP0     ; Select Register page 1
        CLRF    LCD_DATA_TRIS   ; Set PORTB for output
        BCF     STATUS, RP0     ; Select Register page 0
        RETURN

Dave Reinagel