patch-2.4.6 linux/Documentation/fb/matroxfb.txt

• Lines: 72
• Date: Mon Jul 2 13:56:40 2001
• Orig file: v2.4.5/linux/Documentation/fb/matroxfb.txt
• Orig date: Sat Nov 11 18:47:40 2000

diff -u --recursive --new-file v2.4.5/linux/Documentation/fb/matroxfb.txt linux/Documentation/fb/matroxfb.txt
@@ -173,9 +173,9 @@
 mtrr     - enables write combining on frame buffer. It speeds up video accesses
            much. It is default. You must have MTRR support enabled in kernel
 	   and your CPU must have MTRR (f.e. Pentium II have them).
-sgram    - tells to driver that you have G200 with SGRAM memory. It has no
+sgram    - tells to driver that you have Gxx0 with SGRAM memory. It has no
            effect without `init'.
-sdram    - tells to driver that you have G200 with SDRAM memory.
+sdram    - tells to driver that you have Gxx0 with SDRAM memory.
            It is a default.
 inv24    - change timings parameters for 24bpp modes on Millenium and
            Millenium II. Specify this if you see strange color shadows around
@@ -279,7 +279,7 @@
  + 24bpp does not support correctly XF-FBDev on big-endian architectures.
  + interlaced text mode is not supported; it looks like hardware limitation,
    but I'm not sure.
- + G200 SGRAM/SDRAM is not autodetected.
+ + Gxx0 SGRAM/SDRAM is not autodetected.
  + maybe more...
 And following misfeatures:
  + SVGALib does not restore screen on exit.
@@ -336,7 +336,7 @@
 
 ACCEL, nofastfont
         8x16                 12x22                6x11
-	Millennium I  G200   Millennium I  G200    Millennium I G200
+	Millennium I  G200   Millennium I  G200   Millennium I  G200
 8bpp     7.79         7.24   13.55         7.78   30.00        21.01
 16bpp    9.13         7.78   16.16         7.78   30.00        21.01
 24bpp   14.17        10.72   18.69        10.24   34.99        21.01
@@ -344,7 +344,7 @@
 
 ACCEL, fastfont
         8x16                 12x22                6x11
-	Millennium I  G200    Millennium I G200   Millennium I  G200
+	Millennium I  G200   Millennium I  G200   Millennium I  G200
 8bpp     8.41         6.01    6.54         4.37   16.00        10.51
 16bpp    9.54         9.12    8.76         6.17   17.52        14.01
 24bpp   15.00        12.36   11.67        10.00   22.01        18.32
@@ -355,6 +355,8 @@
 	Millennium I  G200
 TEXT     3.29         1.50
 
+* Yes, it is slower than Millennium I.
+
 
 Dualhead G400
 =============
@@ -376,7 +378,22 @@
  + if you compiled it as module, you must insert i2c-matroxfb, matroxfb_maven
    and matroxfb_crtc2 into kernel.
 
+
+Dualhead G450
+=============
+Driver supports dualhead G450 with some limitations:
+ + secondary head shares videomemory with primary head. It is not problem
+   if you have 32MB of videoram, but if you have only 16MB, you may have
+   to think twice before choosing videomode.
+ + due to hardware limitation, secondary head can use only 16 and 32bpp
+   videomodes.
+ + secondary head is not accelerated.
+ + secondary head always powerups in 640x480@60-32 videomode. You have to use
+   fbset to change this mode.
+ + TV output is not supported
+ + kernel is not fully multihead ready, so some things are impossible to do.
+ + if you compiled it as module, you must insert matroxfb_g450 and matroxfb_crtc2
+   into kernel.
 	
-* Yes, it is slower than Millennium I.
 --
 Petr Vandrovec <vandrove@vc.cvut.cz>