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931202FG.TXT
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1993-12-08
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Technical Support Note
Product(s) involve : Creative TVCoder
Third party product(s) : Dinosaur Adventure & Space Adventure
Subject
Scrolling display on TV and monitor when playing the Dinosaur/Space
Adventure using TVCoder on 50 Hz video standard.
Description
User will encounter the above mentioned problem when attempting to play the
above games using TVCoder on 50Hz video standard. The root of the problem
being that there is a programming bug in the file KAV.EXE of the Dinosaur
Adventure & Space Adventure. When executing the program on 50Hz video
standard, it reprograms the VGA card's register into a non-standard VGA mode
(or "mode X") thereby changing the frequency to 60Hz. While the TVCoder
when set to 50Hz is expecting a 50Hz signal from the VGA card, however
receive a 60Hz signal instead, thus causing the display to scroll vertically
because the V-Sync is out.
Solution/Action
As this problem is due to programming bug(s) in the application, user who
encountered such problem will have to approach the vendor (Knowledge
Adventure Inc) for an update.