Register The offset register is used to determine the external character generator RAM area. The T6963C has a 16−bit address bus as follows: MSB LSB ad15 ad14 ad13 ad12 ad11 ad10 ad9 ad8 ad7 ad6 ad5 ad4 ad3 ad2 ad1 ad0 Offset Register Data Character Code Line Scan 12 2002-01-07 T6963C T6963C assign External