<!DOCTYPE linuxdoc PUBLIC "-//XFree86//DTD linuxdoc//EN">

<article>
<title>Information for i740 Users
<author>Precision Insight, Inc.
<date>18 February 1999
<toc>

<sect>Supported Hardware
<p>
<itemize>
  <item>Intel 740 based cards
</itemize>


<sect>Features
<p>
<itemize>
  <item>Full support for 8, 15, 16, 24 and 32 bit per pixel depths.
  <item>Hardware cursor support to reduce sprite flicker.
  <item>Hardware accelerated 2D drawing engine support for 8, 15, 16 and
        24 bit per pixel depths.
  <item>Support for high resolution video modes up to 1600x1200.
  <item>Support for doublescan video modes (e.g., 320x200 and 320x240).
  <item>Support for gamma correction at all pixel depths.
  <item>Fully programmable clock supported.
  <item>Robust text mode restore for VT switching.
</itemize>


<sect>Technical Notes
<p>
<itemize>
  <item>Hardware acceleration is not possible in 32 bit per pixel depth.
  <item>Interlace modes cannot be supported.
</itemize>


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


<sect>Configuration
<p>
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:
<verb>
       Section "Device"
           Identifier "i740"
       EndSection
</verb>
or let xf86config or XF86Setup do this for you.

However, if you have problems with auto-detection, you can specify:
<itemize>
  <item>VideoRam - in kilobytes
  <item>DacSpeed - in MHz
  <item>MemBase  - physical address of the linear framebuffer
  <item>IOBase   - physical address of the memory mapped IO registers
</itemize>


<sect>Driver Options
<p>
<itemize>
  <item>"hw_cursor" - request hardware cursor (default)
  <item>"sw_cursor" - software cursor only
  <item>"no_accel"  - software rendering only
  <item>"sgram"     - force the use of SGRAM timing info
  <item>"sdram"     - force the use of SDRAM timing info
</itemize>

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.


<sect>Known Limitations
<p>
<itemize>
  <item>Certain drawing operations are very slow when using 24 bit per
        pixel depth mode.  We hope to fix this in a future release.
</itemize>


<sect>Author
<p>
<itemize>
   <item>Kevin E. Martin <it>&lt;kevin@precisioninsight.com&gt;</it>
</itemize>

This driver was donated to The XFree86 Project by:
<verb>
    Precision Insight, Inc.
    Cedar Park, TX
    USA
</verb>

<htmlurl name="http://www.precisioninsight.com"
          url="http://www.precisioninsight.com">

<verb>
$XFree86: xc/programs/Xserver/hw/xfree86/doc/sgml/i740.sgml,v 1.1.2.1 1999/04/15 12:04:31 hohndel Exp $
</verb>

</article>
