1 256-Color Shift Mode Diagram (Left)
2 -----------------------------------
4 Plane 0 Plane 1 Plane 2 Plane 3
5 Carried 7654 3210 7654 3210 7654 3210 7654 3210
6 From Prev 0000 1111 0000 1111 0000 1111 0000 1111
9 XXXX 0000 | | | | | | |
10 0 0000 1111 | | | | | |
16 <----- Direction of Shift 6 0000 1111