README revision 90b17f1b 
1xf86-video-openchrome
2---------------------
3(http://www.openchrome.org)
4
5SUPPORTED CHIPSETS :
6--------------------
7- CLE266 (VT3122)
8- KM400/P4M800 (VT3205)
9- K8M800 (VT3204)
10- PM800/PM880/CN400 (VT3259)
11- VM800/CN700/P4M800Pro (VT3314)
12- CX700 (VT3324)
13- P4M890 (VT3327)
14- K8M890 (VT3336)
15- P4M900/VN896 (VT3364)
16- VX800 (VT3353)
17- VX855 (VT3409)
18- VX900 (VT3410)
19
20
21SUPPORTED FEATURES :
22--------------------
23- Free modesetting for Unichrome, Unichrome Pro and Chrome9 chipsets.
24- VBE modesetting for everything not natively supported.
25- TV-out support.
26- EXA acceleration.
27- Hardware MPEG2 acceleration.
28
29
30KNOWN BUGS/LIMITATIONS :
31------------------------
32* Laptop panel
33- Laptop displays for anything other than CLE266 and KM400/P4M800 are only
34  supported thru VBE calls.
35- Virtual terminal is broken on some laptop displays. Use a vesa framebuffer to
36  work around that (append vga=791 to your kernel command line, for example).
37
38* XvMC
39- The hardware MPEG4 acceleration that is present on some chipsets is not
40  implemented.
41- No XvMC support for CX700 and newer (new, unsupported engine).
42- No XvMC support for K8M890, P4M890 and P4M900/VN896 (need to get dri working
43  for them first).
44
45* TV output
46- TV modes are hardcoded and must be choosen inside a list depending on the TV
47  encoder.
48- Outputs are dependent on each other and will use the least common
49  denominator. If you're using both VGA/LCD output and TV output, the VGA/LCD
50  output will be limited by the TV encoder (720x576@50Hz for example).
51  In other words, there is no dual screen support.
52
53* Misc.
54- Add-on TMDS encoders are not supported, except thru VBE.
55- CX700, VX800 and VX855 integrated TMDS is supported.
56
57* Chrome9
58- Chrome9 chipsets' family (P4M900, K8M890, VX800, VX855, VX900) currently
59  doesn't support neither AGP DMA nor 3D acceleration. 
60
61
62Please note that 3D acceleration is provided by Mesa (http://mesa3d.org) and is
63not directly related to openchrome.
64
65