mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
75 lines
2.2 KiB
75 lines
2.2 KiB
================= |
|
What is aty128fb? |
|
================= |
|
|
|
.. [This file is cloned from VesaFB/matroxfb] |
|
|
|
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.rst 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/fb/vesafb.rst 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>. Deprecated. |
|
cmode:x chooses PowerMacintosh colour mode <x>. Deprecated. |
|
<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 <[email protected]>
|
|
|