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
______________________________________________________________________
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
xorg.conf file are:
Section "Device"
Identifier "Intel i740"
Driver "i740"
EndSection
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
<mailto:kevin@precisioninsight.com>
o Daryll Strauss <mailto: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
