1 ==============
2 What is tgafb?
3 ==============
4
5 This is a driver for DECChip 21030 based graph
6 cards, which are usually found in older Digita
7 following models are supported:
8
9 - ZLxP-E1 (8bpp, 2 MB VRAM)
10 - ZLxP-E2 (32bpp, 8 MB VRAM)
11 - ZLxP-E3 (32bpp, 16 MB VRAM, Zbuffer)
12
13 This version is an almost complete rewrite of
14 Uytterhoeven, which was based on the original
15 Jay Estabrook.
16
17 Major new features since Linux 2.0.x:
18
19 * Support for multiple resolutions
20 * Support for fixed-frequency and other oddba
21 (by allowing the video mode to be set at bo
22
23 User-visible changes since Linux 2.2.x:
24
25 * Sync-on-green is now handled properly
26 * More useful information is printed on bootu
27 (this helps if people run into problems)
28
29 This driver does not (yet) support the TGA2 fa
30 PowerStorm 3D30/4D20 (also known as PBXGB) car
31 can however be used with the standard VGA Text
32
33
34 Configuration
35 =============
36
37 You can pass kernel command line options to tg
38 `video=tgafb:option1,option2:value2,option3` (
39 separated by comma, values are separated from
40
41 Accepted options:
42
43 ========== ==================================
44 font:X default font to use. All fonts are
45 SUN12x22 font which is very nice a
46
47 mode:X default video mode. The following
48 640x480-60, 800x600-56, 640x480-72
49 1024x768-60, 1152x864-60, 1024x768
50 1152x864-70, 1280x1024-61, 1024x76
51 1152x864-84, 1280x1024-76, 1280x10
52 ========== ==================================
53
54
55 Known Issues
56 ============
57
58 The XFree86 FBDev server has been reported not
59 mmap(). Running the standard XF86_TGA server f
60 me, however this server does not do accelerati
61 quite slow. Support for acceleration is being
62 XFree86 4.x.
63
64 When running tgafb in resolutions higher than
65 tgafb to XF86_TGA 3.3.x, the entire screen is
66 refreshed. This is an X server problem, not a
67 XFree86 4.0.
68
69 Enjoy!
70
71 Martin Lucina <mato@kotelna.sk>
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