--- /dev/null
+ 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