Documentation/fb/matroxfb.rst

46 bpp  640x400  640x480  768x576  800x600  960x720
51  16            0x111    0x182    0x114    0x18A
61 bpp  1024x768 1152x864 1280x1024 1408x1056 1600x1200
66  16    0x117    0x192    0x11A     0x19A     0x11E
94 architectures there are some glitches for 24bpp videomodes. 8, 16 and 32bpp
169 		 -  4 -> 2x512Kx16 chips, 8/16MB onboard, probably sdram only
174 		 -  0 -> 2x512Kx16 SDRAM, 16/32MB
175 		 -	 2x512Kx32 SGRAM, 16/32MB
176 		 -  1 -> 2x256Kx32 SGRAM, 8/16MB
177 		 -  2 -> 4x128Kx32 SGRAM, 8/16MB
179 		 -  4 -> 4x256Kx32 SGRAM, 16/32MB
197 inv24        change timings parameters for 24bpp modes on Millennium and
219 	     4bpp, 8bpp). In DIRECTCOLOR modes it is limited to characters
252 	     has 8bpp support. Otherwise first available of 640x350x4bpp,
285 depth:X      Bits per pixel: 0=text, 4,8,15,16,24 or 32. Default depends on
316  - 24bpp does not support correctly XF-FBDev on big-endian architectures.
336    (and it works with 8bpp on about 320 MHz dotclocks (and changed mclk)).
352  - 4bpp is available only on Millennium I and Millennium II. It is hardware
354  - selection between 1:5:5:5 and 5:6:5 16bpp videomode is done by -rgba
355    option of fbset: "fbset -depth 16 -rgba 5,5,5" selects 1:5:5:5, anything
358    instead of one of 16M colors). It is due to hardware limitation of
366 (for 32bpp it is about 3GB of data (exactly 3000 MB); for 8x16 font in
367 16 seconds, i.e. 187 MBps).
375   8bpp    16.42         9.54   12.33         9.13
376   16bpp   21.00        15.70   19.11        15.02
377   24bpp   36.66        36.66   35.00        35.00
378   32bpp   35.00        30.00   33.85        28.66
383   8bpp     7.79         7.24   13.55         7.78   30.00        21.01
384   16bpp    9.13         7.78   16.16         7.78   30.00        21.01
385   24bpp   14.17        10.72   18.69        10.24   34.99        21.01
386   32bpp   16.15	     16.16   18.73        13.09   34.99        21.01
391   8bpp     8.41         6.01    6.54         4.37   16.00        10.51
392   16bpp    9.54         9.12    8.76         6.17   17.52        14.01
393   24bpp   15.00        12.36   11.67        10.00   22.01        18.32
394   32bpp   16.18        18.29*  12.71        12.74   24.44        21.00
408    if you have 32MB of videoram, but if you have only 16MB, you may have
411  + due to hardware limitation, secondary head can use only 16 and 32bpp
429    if you have 32MB of videoram, but if you have only 16MB, you may have
431  + due to hardware limitation, secondary head can use only 16 and 32bpp