pintos-os.org Git - pintos-anon/blob - specs/freevga/vga/seqplanr.txt

   1                           Planar Shift Mode Diagram
   2                           -------------------------
   3
   4        Pixel Value                           Display Memory
   5
   6    3     2     1     0         7     6     5     4     3     2     1     0
   7 +-----+-----+-----+-----+   +-----+-----+-----+-----+-----+-----+-----+-----+
   8 |.....|.....|.....|.....|___|.....|%%%%%|:::::|%%%%%|:::::|%%%%%|:::::|%%%%%|
   9 |.....|.....|.....|.....|   |.....|%%%%%|:::::|%%%%%|:::::|%%%%%|:::::|%%%%%|
  10 +-----+-----+-----+-----+   +-----+-----+-----+-----+-----+-----+-----+-----+
  11    |     |     |     Plane 0   |     |     |     |     |     |     |     |
  12    |     |     |            +-----+-----+-----+-----+-----+-----+-----+-----+
  13    |     |     |____________|.....|%%%%%|:::::|%%%%%|:::::|%%%%%|:::::|%%%%%|
  14    |     |           Plane 1|.....|%%%%%|:::::|%%%%%|:::::|%%%%%|:::::|%%%%%|
  15    |     |                  +-----+-----+-----+-----+-----+-----+-----+-----+
  16    |     |                     |     |     |     |     |     |     |     |
  17    |     |                  +-----+-----+-----+-----+-----+-----+-----+-----+
  18    |     |__________________|.....|%%%%%|:::::|%%%%%|:::::|%%%%%|:::::|%%%%%|
  19    |                 Plane 2|.....|%%%%%|:::::|%%%%%|:::::|%%%%%|:::::|%%%%%|
  20    |                        +-----+-----+-----+-----+-----+-----+-----+-----+
  21    |                           |     |     |     |     |     |     |     |
  22    |                        +-----+-----+-----+-----+-----+-----+-----+-----+
  23    |________________________|.....|%%%%%|:::::|%%%%%|:::::|%%%%%|:::::|%%%%%|
  24                      Plane 3|.....|%%%%%|:::::|%%%%%|:::::|%%%%%|:::::|%%%%%|
  25                             +-----+-----+-----+-----+-----+-----+-----+-----+
  26                                |     |     |     |     |     |     |     |
  27
  28                      Pixel:    0     1     2     3     4     5     6     7
  29
  30                                       <--------  Direction of Shift
  31