OpenGrok

Information for i740 Users
Precision Insight, Inc.
18 February 1999
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Table of Contents


1. Supported Hardware
2. Features
3. Technical Notes
4. Reported Working Video Cards
5. Configuration
6. Driver Options
7. Known Limitations
8. Author


______________________________________________________________________

[1m1.  Supported Hardware[0m


+o  Intel 740 based cards.


[1m2.  Features[0m


+o  Full support for 8, 15, 16, and 24 bit pixel depths.

+o  Hardware cursor support to reduce sprite flicker.

+o  Hardware accelerated 2D drawing engine support for 8, 15, 16 and 24
   bit pixel depths.

+o  Support for high resolution video modes up to 1600x1200.

+o  Support for doublescan video modes (e.g., 320x200 and 320x240).

+o  Support for gamma correction at all pixel depths.

+o  Fully programmable clock supported.

+o  Robust text mode restore for VT switching.


[1m3.  Technical Notes[0m


+o  Hardware acceleration is not possible when using the framebuffer in
   32 bit per pixel format.

+o  Interlace modes cannot be supported.


[1m4.  Reported Working Video Cards[0m


+o  Real3D Starfighter AGP

+o  Real3D Starfighter PCI

+o  Diamond Stealth II/G460 AGP

+o  3DVision-i740 AGP

+o  ABIT G740 8MB SDRAM

+o  Acorp AGP i740

+o  AGP 2D/3D V. 1N, AGP-740D

+o  AOpen AGP 2X 3D Navigator PA740

+o  ARISTO i740 AGP (ART-i740-G)

+o  ASUS AGP-V2740

+o  Atrend (Speedy) 3DIO740 AGP (ATC-2740)

+o  Chaintech AGP-740D

+o  EliteGroup(ECS) 3DVision-i740 AGP

+o  EONtronics Picasso 740

+o  EONtronics Van Gogh

+o  Everex MVGA i740/AG

+o  Flagpoint Shocker i740 8MB

+o  Gainward CardExpert 740 8MB

+o  Genoa Systems Phantom 740

+o  Gigabyte Predator i740 8MB AGP

+o  Hercules Terminator 128 2X/i AGP

+o  HOT-158 (Shuttle)

+o  Intel Express 3D AGP

+o  Jaton Video-740 AGP 3D

+o  Jetway J-740-3D 8MB AGP, i740 AGP 3D

+o  Joymedia Apollo 7400

+o  Leadtek Winfast S900

+o  Machspeed Raptor i740 AGP 4600

+o  Magic-Pro MP-740DVD

+o  MAXI Gamer AGP 8 MB

+o  Palit Daytona AGP740

+o  PowerColor C740 (SG/SD) AGP

+o  QDI Amazing I

+o  Soyo AGP (SY-740 AGP)

+o  Spacewalker Hot-158

+o  VideoExcel AGP 740

+o  ViewTop ZeusL 8MB

+o  Winfast S900 i740 AGP 8MB


[1m5.  Configuration[0m

The driver auto-detects all device information necessary to initialize
the card.  The only lines you need in the "Device" section of your
xorg.conf file are:

       Section "Device"
           Identifier "Intel i740"
           Driver     "i740"
       EndSection


or let xorgconfig do this for you.

However, if you have problems with auto-detection, you can specify:

+o  VideoRam - in kilobytes

+o  DacSpeed - in MHz

+o  MemBase  - physical address of the linear framebuffer

+o  IOBase   - physical address of the memory mapped IO registers


[1m6.  Driver Options[0m


+o  "NoAccel"  - Turn off hardware acceleration

+o  "SWCursor" - Request a software cursor (hardware is default)

+o  "SDRAM"    - Force the use of SDRAM timings

+o  "SGRAM"    - Force the use of SGRAM timings

+o  "SlowRam"  - Force the use of slower ram timings

+o  "Dac6Bit"  - Force the use of a 6 Bit Dac (8 Bit is the default)

+o  "UsePIO    - Force the use of programmed IO (Memory mapped is the
   default)

Note: the i740 X server should automatically detect whether your card
has SGRAM or SDRAM.  Use the "sgram" and "sdram" options if it is
incorrectly detected.


[1m7.  Known Limitations[0m


+o  Certain drawing operations are very slow when using 24 bit pixel
   depth mode.


[1m8.  Author[0m


+o  Original version by Kevin E Martin <kevin (a] precisioninsight.com>

+o  Daryll Strauss  <daryll (a] precisioninsight.com>

The X11R6.8 version of this driver originally came from XFree86 4.4
rc2.

The XFree86 version of this driver was donated to The XFree86 Project
by:

    Precision Insight, Inc.
    Cedar Park, TX
    USA


http://www.precisioninsight.com