Information for i740 Users

Precision Insight, Inc.

1. Supported Hardware

• Intel 740 based cards.

2. Features

• Full support for 8, 15, 16, and 24 bit pixel depths.
• Hardware cursor support to reduce sprite flicker.
• Hardware accelerated 2D drawing engine support for 8, 15, 16 and 24 bit pixel depths.
• Support for high resolution video modes up to 1600x1200.
• Support for doublescan video modes (e.g., 320x200 and 320x240).
• Support for gamma correction at all pixel depths.
• Fully programmable clock supported.
• Robust text mode restore for VT switching.

3. Technical Notes

• Hardware acceleration is not possible when using the framebuffer in 32 bit per pixel format.
• Interlace modes cannot be supported.

4. Reported Working Video Cards

• Real3D Starfighter AGP
• Real3D Starfighter PCI
• Diamond Stealth II/G460 AGP
• 3DVision-i740 AGP
• ABIT G740 8MB SDRAM
• Acorp AGP i740
• AGP 2D/3D V. 1N, AGP-740D
• AOpen AGP 2X 3D Navigator PA740
• ARISTO i740 AGP (ART-i740-G)
• ASUS AGP-V2740
• Atrend (Speedy) 3DIO740 AGP (ATC-2740)
• Chaintech AGP-740D
• EliteGroup(ECS) 3DVision-i740 AGP
• EONtronics Picasso 740
• EONtronics Van Gogh
• Everex MVGA i740/AG
• Flagpoint Shocker i740 8MB
• Gainward CardExpert 740 8MB
• Genoa Systems Phantom 740
• Gigabyte Predator i740 8MB AGP
• Hercules Terminator 128 2X/i AGP
• HOT-158 (Shuttle)
• Intel Express 3D AGP
• Jaton Video-740 AGP 3D
• Jetway J-740-3D 8MB AGP, i740 AGP 3D
• Joymedia Apollo 7400
• Leadtek Winfast S900
• Machspeed Raptor i740 AGP 4600
• Magic-Pro MP-740DVD
• MAXI Gamer AGP 8 MB
• Palit Daytona AGP740
• PowerColor C740 (SG/SD) AGP
• QDI Amazing I
• Soyo AGP (SY-740 AGP)
• Spacewalker Hot-158
• VideoExcel AGP 740
• ViewTop ZeusL 8MB
• Winfast S900 i740 AGP 8MB

5. Configuration

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

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

• VideoRam - in kilobytes
• DacSpeed - in MHz
• MemBase - physical address of the linear framebuffer
• IOBase - physical address of the memory mapped IO registers

6. Driver Options

• "NoAccel" - Turn off hardware acceleration
• "SWCursor" - Request a software cursor (hardware is default)
• "SDRAM" - Force the use of SDRAM timings
• "SGRAM" - Force the use of SGRAM timings
• "SlowRam" - Force the use of slower ram timings
• "Dac6Bit" - Force the use of a 6 Bit Dac (8 Bit is the default)
• "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.

7. Known Limitations

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

8. Author

• Original version by Kevin E Martin kevin@precisioninsight.com
• Daryll Strauss daryll@precisioninsight.com

The Xorg 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