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- Information for Alliance Promotion chipset users
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- Henrik Harmsen (Henrik.Harmsen@erv.ericsson.se)
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- 23 February 1998
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- 1. Support chipsets
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- The apm driver in the SVGA server is for Alliance Promotion (www.alsc.com)
- graphics chipsets. The following chipsets are supported:
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- o 6422
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- Old chipset without color expansion hardware (text accel).
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- o AT24
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- As found in Diamond Stealth Video 2500. Quite similar to AT3D.
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- o AT25, AT3D
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- AT3D is found in Hercules Stingray 128/3D. Most other Voodoo Rush based
- cards use the AT25 which is identical except it doesn't have the 3D stuff
- in it.
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- 2. Acceleration
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- The apm driver uses the XAA (XFree86 Acceleration Architecture) in the SVGA
- server. It has support for the following acceleration:
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- o Bitblts (rectangle copy operation)
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- o Lines (solid, single pixel)
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- o Filled rectangles
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- o CPU->Screen colour expansion (text accel). Not for 6422.
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- o Hardware cursor
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- All in 8, 16 and 32 bpp modes. No 24bpp mode is supported. Also VESA DPMS
- power save mode is fully supported with "standby", "suspend" and "off" modes
- (set with with the "xset dpms" command).
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- 3. Configuration
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- First: Please run the XF86Setup program to create a correct configuration.
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- Information for Alliance Promotion chipset users 1
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- Information for Alliance Promotion chipset users 2
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- You can turn off hardware cursor by inserting the following line in the Device
- section of the XF86Config file:
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- Option "sw_cursor"
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- Or turn off hardware acceleration:
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- Option "noaccel"
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- Please don't specify the amount of video RAM you have or which chipset you have
- in the config file, let the driver probe for this. Also please don't put any
- "clocks" line in the device section since these chips have a fully programmable
- clock that can take (almost) any modeline you throw at it. It might fail at
- some specific clock values but you should just try a slightly different clock
- and it should work.
-
- Generated from XFree86: xc/programs/Xserver/hw/xfree86/doc/sgml/apm.sgml,v 1.1.2.2 1998/02/25 12:20:30 dawes Exp $
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- Information for Alliance Promotion chipset users 3
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- CONTENTS
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- 1. Support chipsets ......................................................... 1
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- 2. Acceleration ............................................................. 1
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- 3. Configuration ............................................................ 1
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