1 ===========================================
2 s3fb - fbdev driver for S3 Trio/Virge chips
3 ===========================================
4
5
6 Supported Hardware
7 ==================
8
9 S3 Trio32
10 S3 Trio64 (and variants V+, UV+, V2/DX
11 S3 Virge (and variants VX, DX, GX and
12 S3 Plato/PX (completely un
13 S3 Aurora64V+ (completely un
14
15 - only PCI bus supported
16 - only BIOS initialized VGA devices su
17 - probably not working on big endian
18
19 I tested s3fb on Trio64 (plain, V+ and V2/DX)
20 all on i386.
21
22
23 Supported Features
24 ==================
25
26 * 4 bpp pseudocolor modes (with 18bit
27 * 8 bpp pseudocolor mode (with 18bit
28 * 16 bpp truecolor modes (RGB 555 and
29 * 24 bpp truecolor mode (RGB 888) on (
30 * 32 bpp truecolor mode (RGB 888) on (
31 * text mode (activated by bpp = 0)
32 * interlaced mode variant (not availab
33 * doublescan mode variant (not availab
34 * panning in both directions
35 * suspend/resume support
36 * DPMS support
37
38 Text mode is supported even in higher resoluti
39 lower pixclocks (maximum usually between 50-60
40 hardware, i get best results from plain S3 Tri
41 limitation is not enforced by driver. Text mod
42 (hardware limitation) and 16bit tall fonts (dr
43 support is broken on S3 Trio64 V2/DX.
44
45 There are two 4 bpp modes. First mode (selecte
46 packed pixels, high nibble first. Second mode
47 with interleaved planes (1 byte interleave), M
48 8bit wide fonts only (driver limitation).
49
50 Suspend/resume works on systems that initializ
51 if device is active (for example used by fbcon
52
53
54 Missing Features
55 ================
56 (alias TODO list)
57
58 * secondary (not initialized by BIOS)
59 * big endian support
60 * Zorro bus support
61 * MMIO support
62 * 24 bpp mode support on more cards
63 * support for fontwidths != 8 in 4 bpp
64 * support for fontheight != 16 in text
65 * composite and external sync (is anyo
66 * hardware cursor
67 * video overlay support
68 * vsync synchronization
69 * feature connector support
70 * acceleration support (8514-like 2D,
71 * better values for some magic registe
72
73
74 Known bugs
75 ==========
76
77 * cursor disable in text mode doesn't
78 * text mode broken on S3 Trio64 V2/DX
79
80
81 --
82 Ondrej Zajicek <santiago@crfreenet.org>
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