starter (550B)
1 130 | R1 | R2 | R3 | R4 2 83 | 83 | 0 | | 0 3 | | 1 | 1 | 4 | | | | 1 5 | 41 | | | 6 | | 2 | 1 | 7 | | | | 2 8 | 20 | | | 9 | | 3 | 0 | 10 | 10 | | | 11 | | 4 | 0 | 12 | 5 | | | 13 | | 5 | 1 | 3 14 | 2 | | | 15 | | 6 | 0 | 16 | 1 | | | 17 | | 7 | 1 | 4 18 | 0 | | | 19 | 83 | | | 0 20 | 211| | | 21 211| | | | 22 23 It adds a parity bit to the number 24 25 faster, lower level access 26 27 not OO or functional