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<A HREF="ati.html"><EM>ATI Adapters README file</EM></A>
 <b>:</b> <EM>Current implementation for ATI adapters</EM><BR>
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<HR NOSHADE>
  <H2><A NAME="3"></A>3. Current implementation for ATI adapters</H2>
<p>The driver currently supports the SuperVGA capabilities of all ATI adapters
except some early Mach8 and Mach32 adapters that do not provide the required
functionality.
This support works for monochrome, 16-colour and 256-colour video modes, if one
of the following ATI graphics controller chips is present:
<pre>
VGAWonder series:  18800, 18800-1, 28800-2, 28800-4, 28800-5, 28800-6
   Mach32 series:  68800-3, 68800-6, 68800AX, 68800LX
   Mach64 series:  88800GX-C, 88800GX-D, 88800GX-E, 88800GX-F, 88800CX,
                   264CT, 264ET, 264VT, 264GT (3D Rage), 264VT-B, 264VT3,
                   264VT4, 264GT-B (3D Rage II), 3D Rage IIc, 3D Rage Pro,
                   3D Rage LT, 3D Rage LT Pro, 3D Rage XL, 3D Rage XC
</pre>

The driver also supports 32K, 64K and 16M-colour modes on the 264xT and 3D Rage
series of adapters using the accelerator CRTC (but not the VGA CRTC).
This support is as yet unaccelerated.</p>
<p>The newer Rage 128 chips are not yet supported.</p>
<p>Adapters based on the above chips have been marketed under a rather large
number of names over the years.
Among them are:
<pre>
VGAWonder series:  VGAWonder V3, VGAWonder V4, VGAWonder V5, VGAWonder+,
                   VGAWonder XL, VGAWonder XL24, VGAWonder VLB, VGA Basic,
                   VGA Basic 16, VGA Edge, VGA Edge 16, VGA Integra,
                   VGA Charger, VGAStereo F/X, VGA 640, VGA 800, VGA 1024,
                   VGA 1024D, VGA 1024 XL, VGA 1024 DXL, VGA 1024 VLB
    Mach8 series:  Graphics Ultra, Graphics Vantage, VGAWonder GT
                   (None of the 8514/Ultra and 8514 Vantage series is
                    supported at this time)
   Mach32 series:  Graphics Ultra+, Graphics Ultra Pro, Graphics Wonder,
                   Graphics Ultra XLR, Graphics Ultra AXO, VLB mach32-D,
                   PCI mach32-D, ISA mach32
   Mach64 series:  Graphics Xpression, Graphics Pro Turbo, WinBoost,
                   WinTurbo, Graphics Pro Turbo 1600, Video Xpression,
                   3D Xpression, Video Xpression+, 3D Xpression+,
                   3D Charger, Video Charger, WinCharger, All-In-Wonder,
                   All-In-Wonder PRO, 3D Pro Turbo, XPERT@Play,
                   XPERT@Play 98, XPERT@Work, XPERT 98, XPERT LCD,
                   XPERT XL
</pre>

VGAWonder, Mach8 and Mach32 ISA adapters are available with or without a
mouse.</p>
<p>These adapters are available with a variety of clock generators and RAMDACs.
The 264xT and 3D Rage series of chips are integrated controllers, meaning that
they include a programmable clock generator and a RAMDAC.
See the "XF86Config specifications" section below for details.</p>
<p>This driver still does not provide support for accelerated drawing to the
screen.
This means that all drawing is done by the CPU, rather than by any accelerator
present in the system.
This can make opaque moves, for example, quite "jerky".
Thus, given that IBM 8514/A and ATI Mach8 do not allow CPU access to their
frame buffer, the driver will currently ignore these accelerators.
Most Mach32 adapters provide both accelerated function and VGA functionality,
but the driver currently only uses the VGA.</p>
<p>The driver *does* however support the accelerator CRTC present in all ATI
Mach64 adapters.
For 256-colour, and higher depth modes, this support will be used by default,
although an XF86Config option can be specified to use the SuperVGA CRTC
instead.
A linear video memory aperture is also available in 256-colour and higher depth
modes and enabled by default if a 264xT or 3D Rage controller is detected or,
on 88800 controllers, if the accelerator CRTC is used.
XF86Config options are available to disable this aperture, or (on non-PCI
adapters) enable it or move it to some other address.</p>

 <HR NOSHADE>
<A HREF="ati.html"><EM>ATI Adapters README file</EM></A>
 <b>:</b> <EM>Current implementation for ATI adapters</EM><BR>
<b>Previous:</b> <A HREF="ati2.html"><EM>A note on acceleration</EM></A><BR>
<b>Next:</b> <A HREF="ati4.html"><EM>Current implementation of generic VGA support for non-ATI adapters</EM></A>



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