Information for i740 Users Precision Insight, Inc. 18 February 1999 ____________________________________________________________ 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 o Daryll Strauss 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