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BMP file format
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          Offset    Sz      Mean
              0h     2      Value = "BM"
              2h     4      File size; bytes
              6h     4      Value = 0
              Ah     4      Offset to picture

              Eh     4      Value = 28h (Size of image info)
             12h     4      Image width; pixels
             16h     4      Image height; pixels
             1Ah     2      Value = 1 (No. of plane)
             1Ch     2      Bit per pixel
             1Eh     4      Compression type. Normally = 0
             22h     4      Size of compressed image; bytes
             26h     4      H resolution; pixels/meter
             2Ah     4      V resolution; pixels/meter
             2Eh     4      Number of color used. (0 for full color set)
             32h     4      Number of important color.
             36h            Color palette

For Win95 rotated palette BMP
-----------------------------
     Must be 320*400 pixels 256 colors.
              2h     4      Value = 1F836h  , 54+(4*256)+(320*400)
              Ah     4      Value = 436h    , 54+(4*256)
             12h     4      Value = 140h    , 320
             16h     4      Value = 190h    , 400
             1Ch     2      Value = 8
             1Eh     4      Value = 0
             22h     4      Value = 1F400h  , 320*400
             26h     4      Value = CEh
             2Ah     4      Value = C4h
             2Eh     4      Value = 0
             32h     4      ***First color***
     Palette will rotate color from "First color" to color index 255th.