Based on kernel version 4.16.1. Page generated on 2018-04-09 11:53 EST.
1 [This file is cloned from VesaFB/matroxfb] 2 3 What is aty128fb? 4 ================= 5 6 This is a driver for a graphic framebuffer for ATI Rage128 based devices 7 on Intel and PPC boxes. 8 9 Advantages: 10 11 * It provides a nice large console (128 cols + 48 lines with 1024x768) 12 without using tiny, unreadable fonts. 13 * You can run XF68_FBDev on top of /dev/fb0 14 * Most important: boot logo :-) 15 16 Disadvantages: 17 18 * graphic mode is slower than text mode... but you should not notice 19 if you use same resolution as you used in textmode. 20 * still experimental. 21 22 23 How to use it? 24 ============== 25 26 Switching modes is done using the video=aty128fb:<resolution>... modedb 27 boot parameter or using `fbset' program. 28 29 See Documentation/fb/modedb.txt for more information on modedb 30 resolutions. 31 32 You should compile in both vgacon (to boot if you remove your Rage128 from 33 box) and aty128fb (for graphics mode). You should not compile-in vesafb 34 unless you have primary display on non-Rage128 VBE2.0 device (see 35 Documentation/fb/vesafb.txt for details). 36 37 38 X11 39 === 40 41 XF68_FBDev should generally work fine, but it is non-accelerated. As of 42 this document, 8 and 32bpp works fine. There have been palette issues 43 when switching from X to console and back to X. You will have to restart 44 X to fix this. 45 46 47 Configuration 48 ============= 49 50 You can pass kernel command line options to vesafb with 51 `video=aty128fb:option1,option2:value2,option3' (multiple options should 52 be separated by comma, values are separated from options by `:'). 53 Accepted options: 54 55 noaccel - do not use acceleration engine. It is default. 56 accel - use acceleration engine. Not finished. 57 vmode:x - chooses PowerMacintosh video mode <x>. Deprecated. 58 cmode:x - chooses PowerMacintosh colour mode <x>. Deprecated. 59 <XxX@X> - selects startup videomode. See modedb.txt for detailed 60 explanation. Default is 640x480x8bpp. 61 62 63 Limitations 64 =========== 65 66 There are known and unknown bugs, features and misfeatures. 67 Currently there are following known bugs: 68 + This driver is still experimental and is not finished. Too many 69 bugs/errata to list here. 70 71 -- 72 Brad Douglas <brad@neruo.com>