1s3virge(4) Kernel Interfaces Manual s3virge(4)
2
6 s3virge - S3 ViRGE video driver
7
9 Section "Device"
10 Identifier "devname"
11 Driver "s3virge"
12 ...
13 [ Option "optionname" ["optionvalue"]]
14 EndSection
15
17 s3virge is an Xorg driver for S3 based video cards. The driver is
18 fully accelerated, and provides support for the following framebuffer
19 depths: 8, 15, 16, and 24. All visual types are supported for depth 8,
20 and TrueColor visuals are supported for the other depths. XVideo hard‐
21 ware up scaling is supported in depth 16 and 24 on the DX, GX, GX2, MX,
22 MX+, and Trio3D/2X. Doublescan modes are supported and tested in depth
23 8 and 16 on DX, but disable XVideo. Doublescan modes on other chipsets
24 are untested.
25
27 The s3virge driver supports PCI and AGP video cards based on the fol‐
28 lowing S3 chips:
29 ViRGE 86C325
31 ViRGE VX 86C988
33 ViRGE DX 86C375
35 ViRGE GX 86C385
37 ViRGE GX2 86C357
39 ViRGE MX 86C260
41 ViRGE MX+ 86C280
43 Trio 3D 86C365
45 Trio 3D/2X 86C362, 86C368
47
49 Please refer to xorg.conf(5) for general configuration details. This
50 section only covers configuration details specific to this driver. All
51 options names are case and white space insensitive when parsed by the
52 server, for example, "virge vx" and "VIRGEvx" are equivalent.
53 The driver auto-detects the chipset type, but the following ChipSet
55 names may optionally be specified in the config file ""Device"" sec‐
56 tion, and will override the auto-detection:
57 "virge", "86c325", "virge vx", "86c988", "virge dx", "86c375",
59 "virge gx", "86c385", "virge gx2", "86c357", "virge mx", "86c260",
60 "virge mx+", "86c280", "trio 3d", "86c365", "trio 3d/2x", "86c362",
61 "86c368".
62 The following Cursor Options are supported:
65 Option "HWCursor" ["boolean"]
67 Enable or disable the HW cursor. Default: on.
68 Option "SWCursor" ["boolean"]
70 Inverse of "HWCursor". Default: off.
71 The following display Options are supported:
74 Option "ShadowFB" ["boolean"]
76 Use shadow framebuffer. Disables HW acceleration. Default:
77 off.
78 Option "Rotate" "cw | ccw"
80 Rotate the screen CW - clockwise or CCW - counter clockwise.
81 Disables HW Acceleration and HW Cursor, uses ShadowFB. Default:
82 no rotation.
83 Option "XVideo" ["boolean"]
85 Disable XVideo support by using the off option. This changes
86 FIFO settings which prevent screen noise for high-res modes.
87 Default: on
88 The following video memory Options are supported:
91 Option "slow_edodram"
93 Switch the standard ViRGE to 2-cycle edo mode. Try this if you
94 encounter pixel corruption on the ViRGE. Using this option will
95 cause a large decrease in performance. Default: off.
96 Option "fpm_vram"
98 Switch the ViRGE/VX to fast page mode vram mode. Default: off.
99 Option "slow_dram | fast_dram"
101 Change Trio 3D and 3D/2X memory options. Default: Use BIOS
102 defaults.
103 Option "early_ras_precharge | late_ras_precharge"
105 adjust memory parameters. One of these will us the same set‐
106 tings as your video card defaults, and using neither in the con‐
107 fig file does the same. Default: none.
108 Option "set_mclk" "integer"
110 sets the memory clock, where integer is in kHz, and integer <=
111 100000. Default: probe the memory clock value, and use it at
112 server start.
113 Option "set_refclk" "integer"
115 sets the ref clock for ViRGE MX, where integer is in kHz.
116 Default: probe the memory clock value, and use it at server
117 start.
118 The following acceleration and graphics engine Options are supported:
122 Option "NoAccel"
124 Disable acceleration. Very useful for determining if the driver
125 has problems with drawing and acceleration routines. This is
126 the first option to try if your server runs but you see graphic
127 corruption on the screen. Using it decreases performance, as it
128 uses software emulation for drawing operations the video driver
129 can accelerate with hardware. Default: acceleration is enabled.
130 Option "UseFB"
132 There are two framebuffer rendering methods. fb and cfb. Both
133 are available in the driver. fb is the newer and default
134 method. To switch back to cfb use this option with no, off or
135 other negative parameter. Default: on.
136 Option "fifo_aggressive | fifo_moderate | fifo_conservative"
138 alter the settings for the threshold at which the pixel FIFO
139 takes over the internal memory bus to refill itself. The smaller
140 this threshold, the better the acceleration performance of the
141 card. You may try the fastest setting (fifo_aggressive) and move
142 down if you encounter pixel corruption. The optimal setting
143 will probably depend on dot-clock and on color depth. Note that
144 specifying any of these options will also alter other memory
145 settings which may increase performance, so trying fifo_conser‐
146 vative will in most cases be a slight benefit (this uses the
147 chip defaults). If pixel corruption or transient streaking is
148 observed during drawing operations then removing any fifo
149 options is recommended. Default: none.
150 The following PCI bus Options are supported:
153 Option "pci_burst" ["boolean"]
155 will enable PCI burst mode. This should work on all but a few
156 broken PCI chipsets, and will increase performance. Default:
157 off.
158 Option "pci_retry" ["boolean"]
160 will allow the driver to rely on PCI Retry to program the ViRGE
161 registers. pci_burst must be enabled for this to work. This
162 will increase performance, especially for small fills/blits,
163 because the driver does not have to poll the ViRGE before send‐
164 ing it commands to make sure it is ready. It should work on most
165 recent PCI chipsets. Default: off.
166 The following ViRGE MX LCD Options are supported:
168 Option "lcd_center"
170 Option "set_lcdclk" "integer"
172 allows setting the clock for a ViRGE MX LCD display. integer is
173 in Hz. Default: use probed value.
174 The following additional Options are supported:
177 Option "ShowCache" ["boolean"]
179 Enable or disable viewing offscreen cache memory. A development
180 debug option. Default: off.
181 Option "mx_cr3a_fix" ["boolean"]
183 Enable or disable a cr3a fix added for ViRGE MX. Default: on.
184
187 Xorg(1), xorg.conf(5), Xserver(1), X(7)
188
191 The VideoRam generic driver parameter is presently ignored by the
192 s3virge driver. On PPC this is reported to cause problems for 2M
193 cards, because they may autodetect as 4M.
194
197 For assistance with this driver, or XFree86 in general, check the
198 XFree86 web site at http://www.xfree86.org. A FAQ is available on the
199 web site at http://www.xfree86.org/FAQ/. If you find a problem with
200 XFree86 or have a question not answered in the FAQ please use our bug
201 report form available on the web site or send mail to
202 XFree86@XFree86.org. When reporting problems with the driver send as
203 much detail as possible, including chipset type, a server output log,
204 and operating system specifics.
205
208 Kevin Brosius, Matt Grossman, Harald Koenig, Sebastien Marineau, Mark
209 Vojkovich.
210X Version 11 xf86-video-s3virge 1.10.4 s3virge(4)