OK I am not clear on what you want to do. Are you still wanting to retrieve your lookup from external eeprom? Because that is way more code than pulling it out of your main chip. Look at my tachometer code. I stored those values in the on chip eeprom, but I could have just as easily used a lookup table in code space, the primary immediate advantage to storing it in eeprom, is if you change to a different display you can easily change the eeprom data, to match.