EEPROM Memory Map
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; Look-up tables......
;
; First we check out EEPROM.  If the checksum computes transfer it to RAM.
;  If checksum incorrect then get data from ROM.....
;
;  EEPROM   B600-B63E (checksum at B63F) - This is where Dataset 'A' lives
;           B640-B67E (checksum at B67F) -               Dataset 'B'
;           B680-B6BE (checksum at B6BF) -               Dataset 'C'
;
;  RAM      0080-00B5                    - modifiers are here
;  ROM      F740-F775                    - get from here if bad EEPROM
;
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