From:	"0/0" <nsousbpoanmer AT naooslp DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: wait for vertical retrace
Date:	4 Jun 1999 21:49:00 GMT
Organization:	Value Net Internetwork Services Inc.
Lines:	25
Message-ID:	<01beaed3$de0737a0$fc4484ce@sub>
References:	<7j95e8$ajm$1 AT fe1 DOT cs DOT interbusiness DOT it> <37582c32 DOT 0 AT news DOT uni-bielefeld DOT de>
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
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Manni Heumann <manfred DOT heumann AT uni-bielefeld DOT de> wrote in article
<37582c32 DOT 0 AT news DOT uni-bielefeld DOT de>...
> "Bonifati" <abonifati AT telsa DOT it> wrote:
> >i copied this code to wait for the vertical retrace from a book:
> >
> >void Wait_Vertical_Retrace (void)
> >{
> >  while ( (inp (0x3da) && 0x8) != 0 ) {};
> >  while ( (inp (0x3da) && 0x8) == 0 ) {};
> >}
> >
> >my program works without waiting for vertical retrace; when i include
it, it
> >fails on run-time (i think it goes in infinite loop into
> >Wait_Vertical_Retrace function).
> >i can't figure out what's wrong with this function. please help me!
> >
> 
> Are you sure you meant "&&" and not "&" ?
> 

I agree if that is how it is, change it to just one &...

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