                         Information for i740 Users

                           Precision Insight, Inc.

                              18 February 1999

1.  Supported Hardware

   o Intel 740 based cards.

2.  Features

   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.

3.  Technical Notes

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

   o Interlace modes cannot be supported.

4.  Reported Working Video Cards

   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

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 XF86Config
file are:

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

or let xf86config 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

6.  Driver Options

   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.

7.  Known Limitations

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

8.  Author

   o Original version by Kevin E Martin <kevin@precisioninsight.com>

   o Daryll Strauss <daryll@precisioninsight.com>

This driver was donated to The XFree86 Project by:

         Precision Insight, Inc.
         Cedar Park, TX
         USA

http://www.precisioninsight.com

     Generated from XFree86: xc/programs/Xserver/hw/xfree86/doc/sgml/i740.sgml,v 1.3 2000/03/04 00:26:30 dawes Exp $


$XFree86: xc/programs/Xserver/hw/xfree86/doc/README.i740,v 1.9 2001/06/01 18:28:42 dawes Exp $
