114 lines
3.9 KiB
Plaintext
114 lines
3.9 KiB
Plaintext
$XFree86: xc/programs/Xserver/hw/xfree86/drivers/apm/README,v 1.5 2000/02/11 22:35:55 dawes Exp $
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Note 1: This driver is work in progress. It might not work at all.
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Want to help? Docs are at
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ftp://beta.xfree86.org/pub/xf86/devel/Documentation/apm
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This is the Alliance Promotion driver for XFree86 4.0+. It currently only
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supports the AT3D, AT25 chipsets (found on various Voodoo-Rush cards) and AT24.
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There is incomplete support for the 6422. The 6422 chips are supported in the
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XFree86 3.3.x series.
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What has worked on my computer :
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- XAA for 8/16/24/32 bpp
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- DGA and DGA2
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- DPMS
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- glide2x
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- using as a module
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- shadow framebuffer
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- AT3D
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- AT24
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- AP6422 (although with problems, including locks)
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- multi card setup (with and without Xinerama)
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- Xv images, even with (slightly modified) glide2x ; note that there is
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still a little problem with vertical offset.
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There is some support for PC-98 with the help of Isao Ohishi
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(ohishi@aero.rim.or.jp). It's still under development. I hope that 8bpp
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works correctly.
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What has not worked :
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- I2C (I'm not sure my card, Hercules 128/3D, has proper cabling)
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What is untested :
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What should be done :
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- overlays (with the video engine, everything should be overlayable
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with everything)
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- (why not) 3210 support
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Loïc Grenié
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Authors:
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-----------------------------------------------------------------------
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Kent Hamilton Initial creation.
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Henrik Harmsen Lots of additions and fixes. <hch@cd.chalmers.se>
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Loic Grenie Conversion to 4.0. <grenie@lami.univ-evry.fr>
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Additions and fixes.
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History:
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-----------------------------------------------------------------------
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Created by Kent Hamilton for Xfree86 from source from Alliance
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Modified 1997-06 by Henrik Harmsen
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- Added support for AT3D
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- Acceleration added for 8,16,32bpp: (for AT3D and AT24)
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- Filled rectangles
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- Screen-screen bitblts
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- Host-screen color expansion bitblts for text
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- DPMS support
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- Enabled hardware cursor code (also in 8bpp)
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- Set to programmable VCLK clock
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- Set MCLK to 57.3 MHz on AT3D.
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- Various bugfixes and cleanups
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Modified 1997-07-06 by Henrik Harmsen
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- Fixed bug that made the HW cursor screw up on VT switches
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- Probably fixed bug that screwed up the screen when using
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screen-screen bitblts. This forced me to put an ApmSync() at
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the end of ApmSubsequentScreenToScreenCopy() which makes
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me unhappy... But: Better it works than not...
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Modified 1997-10-19 by Henrik Harmsen
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- HW line drawing.
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- HW clipping.
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- Added support for ROP's.
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- Text acceleration now lots faster and support for accelerated
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proportional text. (Uses SCANLINE_PAD_DWORD + clipping).
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- Combined write for many register writes gives good
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general speedup. (write x+y as a single 32 bit entity, rather
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obvious, really...:-)
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- Now waits for correct number of free slots in FIFO before
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issuing writes to the card.
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This seems to have eliminated the last instances of dropped
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interrupts from serial IO and no more lost packets in PPP :-)
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- Converted cursor support to use XAA interface.
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- Fixed ApmSync(). Finally removed call to ApmSync at end of
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ApmSubsequentScreenToScreenCopy() :-)
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Modified 1998-03-29 by Henrik Harmsen
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- Added DGA support.
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- Added accel support for AP6422. Fixed AT24 accel support.
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- Fixed clock register calculation for AP6422 and AT24.
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- DPMS support for AT24 & AP6422.
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- 2% faster text accel for AT24/AT3D :-)
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Modified 1998-12-18 by Loic Grenie
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- Converted to Xfree86 4.0 driver interface. (Only support for
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AT25/AT3D chips).
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Modified 1999-03-14 by Henrik Harmsen
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- Various fixes to bring it up to 3.9Pd.
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- Added preliminary (completely untested) support for dynamic
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loading.
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Modified 1999-07-07 by Loïc Grenié
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- Converted to new RAC. Support for DGA and DGA2, I2C, Rush extension.
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Modified 2000-02-10 by Loïc Grenié
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- Bug fixes
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- AP6422 (bugged !)
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- Xv driver
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