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931202A.TXT
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1993-12-15
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Technical Support Note
(Amendment)
Reference TSN No. : 931202
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 reason being that
when executing the program (KAV.EXE) 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
There is no solution to this problem because TVCoder does not support Mode X
(non-standard VGA mode). Other VGA-To-Video/TV encoder cards will also
have the same problem in Mode X.
This TSN amends and supersedes TSN issue no. 931202.
15 December, 1993
Issue No: TSN931202A
Technical Department, Creative Technology Ltd