--- /dev/null
+ Planar Shift Mode Diagram
+ -------------------------
+
+ Pixel Value Display Memory
+
+ 3 2 1 0 7 6 5 4 3 2 1 0
++-----+-----+-----+-----+ +-----+-----+-----+-----+-----+-----+-----+-----+
+|.....|.....|.....|.....|___|.....|%%%%%|:::::|%%%%%|:::::|%%%%%|:::::|%%%%%|
+|.....|.....|.....|.....| |.....|%%%%%|:::::|%%%%%|:::::|%%%%%|:::::|%%%%%|
++-----+-----+-----+-----+ +-----+-----+-----+-----+-----+-----+-----+-----+
+ | | | Plane 0 | | | | | | | |
+ | | | +-----+-----+-----+-----+-----+-----+-----+-----+
+ | | |____________|.....|%%%%%|:::::|%%%%%|:::::|%%%%%|:::::|%%%%%|
+ | | Plane 1|.....|%%%%%|:::::|%%%%%|:::::|%%%%%|:::::|%%%%%|
+ | | +-----+-----+-----+-----+-----+-----+-----+-----+
+ | | | | | | | | | |
+ | | +-----+-----+-----+-----+-----+-----+-----+-----+
+ | |__________________|.....|%%%%%|:::::|%%%%%|:::::|%%%%%|:::::|%%%%%|
+ | Plane 2|.....|%%%%%|:::::|%%%%%|:::::|%%%%%|:::::|%%%%%|
+ | +-----+-----+-----+-----+-----+-----+-----+-----+
+ | | | | | | | | |
+ | +-----+-----+-----+-----+-----+-----+-----+-----+
+ |________________________|.....|%%%%%|:::::|%%%%%|:::::|%%%%%|:::::|%%%%%|
+ Plane 3|.....|%%%%%|:::::|%%%%%|:::::|%%%%%|:::::|%%%%%|
+ +-----+-----+-----+-----+-----+-----+-----+-----+
+ | | | | | | | |
+
+ Pixel: 0 1 2 3 4 5 6 7
+
+ <-------- Direction of Shift
+