aty128fb.txt
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上传日期:2013-02-24
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- [This file is cloned from VesaFB/matroxfb]
- What is aty128fb?
- =================
- This is a driver for a graphic framebuffer for ATI Rage128 based devices
- on Intel and PPC boxes.
- Advantages:
- * It provides a nice large console (128 cols + 48 lines with 1024x768)
- without using tiny, unreadable fonts.
- * You can run XF68_FBDev on top of /dev/fb0
- * Most important: boot logo :-)
- Disadvantages:
- * graphic mode is slower than text mode... but you should not notice
- if you use same resolution as you used in textmode.
- * still experimental.
- How to use it?
- ==============
- Switching modes is done using the video=aty128fb:<resolution>... modedb
- boot parameter or using `fbset' program.
- See Documentation/fb/modedb.txt for more information on modedb
- resolutions.
- You should compile in both vgacon (to boot if you remove your Rage128 from
- box) and aty128fb (for graphics mode). You should not compile-in vesafb
- unless you have primary display on non-Rage128 VBE2.0 device (see
- Documentation/vesafb.txt for details).
- X11
- ===
- XF68_FBDev should generally work fine, but it is non-accelerated. As of
- this document, 8 and 32bpp works fine. There have been palette issues
- when switching from X to console and back to X. You will have to restart
- X to fix this.
- Configuration
- =============
- You can pass kernel command line options to vesafb with
- `video=aty128fb:option1,option2:value2,option3' (multiple options should
- be separated by comma, values are separated from options by `:').
- Accepted options:
- noaccel - do not use acceleration engine. It is default.
- accel - use acceleration engine. Not finished.
- vmode:x - chooses PowerMacintosh video mode <x>. Depreciated.
- cmode:x - chooses PowerMacintosh colour mode <x>. Depreciated.
- <XxX@X> - selects startup videomode. See modedb.txt for detailed
- explanation. Default is 640x480x8bpp.
- Limitations
- ===========
- There are known and unknown bugs, features and misfeatures.
- Currently there are following known bugs:
- + This driver is still experimental and is not finished. Too many
- bugs/errata to list here.
- --
- Brad Douglas <brad@neruo.com>