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Cream of the Crop 1
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VGANIM10.ARJ
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PALETTE.DOC
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1992-08-29
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ATTENTION - VGA ANIMATE DEMO VIEWERS
The palette functions used in VGA ANIMATE may cause screen flicker
on certain video boards, due to the operation of certain palette
manipulation functions built into the board BIOS. These video boards
require multiple "waits" for the vertical sync flag to appear while
updating the video palette.
Certain video board BIOS routines only require one "wait for vertical
sync" before updating the board's color palette. This configuration will
produce a fast color change without flicker. The routines used in the
VGA ANIMATE DEMO assume this type of board is used.
We have taken into account the problem of "multiple waits required"
and have included an additional routine to wait for the sync flag before
changing each portion of the color palette. The downside of using this
additional routine, however, is slower palette updating.
ref : set_palette(char far *palette, char speed);