1. grafs.zip Driver
2. README.TXT File Contents

README.TXT Driver File Contents (grafs.zip)

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ALLIANCE SEMICONDUCTOR
RELEASE NOTES
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GAMMA.EXE
DESC : A Windows 3.1 utility used to demonstrate the Gamma Correction
       feature of the ProMotion 6422.  This is a technology demonstration
       only, not an end-user utility!
Ver  : 1.03.02 Beta
Date : 18 Aug 95 

To install :
        1) Copy bc402rtl.dll to the windows\system directory.
        2) Copy "gamma.exe" to hard drive.
        3) Create a Windows "item" for "gamma.exe" :
	   From Program Manager : File -> New -> Item 

To use:
	1) The application can control the desktop and the HARDWARE
	   video window colors independently of each other.  Note
	   that the HARDWARE video window is active only when the
	   video window is scaled 1X or larger, and not occluded by
	   any other window.  Also it is not active at screen 
	   resolutions larger than 1024x768 or with virtual desktop
	   enabled.

	2) There are two color correction palettes, primary and 
	   secondary.  The primary palette has 256 entries per color
	   so will give the smoothest gradations of color.  The
	   secondary palette has 32 entries per color so if it used
	   for video it may cause some 'banding' or 'posterization'
	   artifacts.

	3) In non-direct color modes (<=256 colors) the primary palette is
           always being used by the desktop.  Thus, desktop correction is
           available through the primary palette only, and video color 
           correction is available through the secondary palette only.

	4) The HARDWARE video window color can be controlled regardless
	   of desktop color mode.  When video clips are open but the
	   HARDWARE window is not active, the video colors will be
	   controlled by the desktop color correction, if enabled.

	5) The following configurations are recommended:

	   Color mode         Desktop      Video      
	   -----------------------------------------
	   256 colors         Primary      Secondary
	   32K/64K colors     Secondary    Primary  
	   16.7M colors       Primary      Secondary      for PhotoShop
	   16.7M colors       Secondary    Primary        for video

	6) Four different correction methods are provided for comparison.
	   Each correction method is an equation with one parameter
	   which maps each color's slider value to an output value.
	   For most applications any of the methods will work fine.

	7) For debugging and references purposes, the primary and secondary
           palettes may be dumped to a specified file.

Examples:

	1) To change the brightness level of video without affecting
	   desktop color:
 
	   a) Enable video color correction.  Use secondary palette
	      if you are in 256-color mode, otherwise primary palette.
	   b) Select any correction method.
	   c) Lock sliders to move all color components together.
           
	2) To match PhotoShop colors in truecolor mode to color printer
	   output, to PanTone book, etc.

	   a) Set desktop to 16.7M colors.  Enable desktop correction
	      using primary palette.
	   b) Load the test pattern image which you wish to match to
	      your ink samples, printout, etc.
	   c) Select any correction method (Standard recommended).
	   d) Adjust the three color components individually to achieve
	      best match.  (Suggested procedure: set gray level first
	      with sliders locked, then fine-tune 3 components.)

	3) To remove undesired green tint from motion video image while
	   increasing green component of desktop windows.

	   a) Make sure desktop is in 32K, 64K or 16.7M color mode.
	   b) Enable video and desktop correction according to one
	      of the recommended configurations in the table above.
	   c) Decrease green slider bar for video, increase for desktop.
           d) Note that when video changes from HARDWARE window to 
	      software, the colors will change considerably.  To avoid
	      this behavior you can use the primary palette for both
	      desktop and video; though this will reduce the green
	      component of all desktop windows as well.