256-Color Shift Mode Diagram (Left) ----------------------------------- Plane 0 Plane 1 Plane 2 Plane 3 Carried 7654 3210 7654 3210 7654 3210 7654 3210 From Prev 0000 1111 0000 1111 0000 1111 0000 1111 | | | | | | | | | | | | | | | | | | XXXX 0000 | | | | | | | 0 0000 1111 | | | | | | 1 1111 0000 | | | | | 2 0000 1111 | | | | 3 1111 0000 | | | 4 0000 1111 | | 5 1111 0000 | <----- Direction of Shift 6 0000 1111 7 | v Carried To Next