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VIDUTIL.DOC
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1990-06-07
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2KB
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46 lines
+-----------------------------------------------------------------------+
| Vision Technoolgies Viaion VGA Video Utility 06/07/90|
+-----------------------------------------------------------------------+
VIDUTIL is a small (1K) memory resident program which allows the user
to change the video characteristics "on-the-fly." This utility allows
the user to enable and disable flicker filter, underscan, and video
as well as change the horizontal and vertical centering while running
another program.
Normally a user can set these options using VTMODE. However, users
may wish to change the video characteristics while running another
application program. To install VIDUTIL, type:
VIDUTIL [ENTER]
To activate VIDUTIL, the user must simultaneously hold down the
[ALT][CTRL] and [N] keys. VIDUTIL will now be active, and the
application previously running will be inactive. Note that VIDUTIL
DOES NOT display any type of popup window. In the interest of
keeping things simple for users wishing to modify VIDUTIL.ASM,
VIDUTIL does not display a help window of any sort.
While VIDUTIL is active, the following keys can be used to change
the video characteristics:
[UpArrow] - Move screen up approximately 8 scan lines
[DnArrow] - Move screen down approximately 8 scan lines
[LeftArrow] - Move screen left approximately 8 pixels
[RightArrow] - Move screen right approximately 8 pixels
[U] - Underscan enable/disable toggle
[F] - Flicker filter enable/disable toggle
[V] - Video output enable/disable toggle
[0] - Return screen back to default screen centering
[ESC] - Exit VIDUTIL and return to current application
When the user is finished using VIDUTIL, they should press [ESC]
once to resume the application they were using before activating
VIDUTIL.
Users who are knowledgeable in Intel 8086 assembly language may wish
to examine the file VIDUTIL.ASM to see how VIDUTIL works.
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