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+<!DOCTYPE linuxdoc PUBLIC "-//XFree86//DTD linuxdoc//EN">
+
+<article>
+<title> Information for Alliance Promotion chipset users
+<author> Henrik Harmsen (Henrik.Harmsen@erv.ericsson.se)
+<date> 23 February 1998
+<toc>
+
+<sect> Support chipsets
+<p>
+The apm driver in the SVGA server is for Alliance Promotion
+(www.alsc.com) graphics chipsets. The following chipsets are supported:
+
+<itemize>
+<item> 6422
+
+	Old chipset without color expansion hardware (text accel).
+
+<item> AT24
+
+	As found in Diamond Stealth Video 2500. Quite similar to AT3D.
+
+<item> AT25, AT3D
+
+  	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.
+</itemize>
+
+<sect> Acceleration
+<p>
+The apm driver uses the XAA (XFree86 Acceleration Architecture) in the 
+SVGA server. It has support for the following acceleration:
+
+<itemize>
+<item> Bitblts (rectangle copy operation)
+<item> Lines (solid, single pixel)
+<item> Filled rectangles
+<item> CPU->Screen colour expansion (text accel). Not for 6422.
+<item> Hardware cursor
+</itemize>
+
+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).
+
+<sect> Configuration
+<p>
+First: Please run the XF86Setup program to create a correct
+configuration.
+
+You can turn off hardware cursor by inserting the following line in the
+Device section of the XF86Config file:
+
+  Option "sw_cursor"
+
+Or turn off hardware acceleration:
+
+  Option "noaccel"
+
+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.
+
+
+
+<verb>
+$XFree86: xc/programs/Xserver/hw/xfree86/doc/sgml/apm.sgml,v 1.1.2.2 1998/02/25 12:20:30 dawes Exp $
+
+
+
+$Xorg: apm.sgml,v 1.3 2000/08/17 19:51:06 cpqbld Exp $
+</verb>
+</article>