From: "Jésus" <jacquespierre DOT pique AT hol DOT fr>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Keybord Read Problem
Date: 15 Apr 1998 20:15:36 GMT
Lines: 45
Message-ID: <01bd6878$1823b740$LocalHost@topper>
References: <35297B13 DOT 4E5CD995 AT earthlink DOT net>
NNTP-Posting-Host: rouen2-36.hol.fr
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Precedence: bulk



Steven S. Falls <broadview AT earthlink DOT net> a écrit dans l'article
<35297B13 DOT 4E5CD995 AT earthlink DOT net>...
>     Does anyone know how to make the keybord read without a wait or an
> error. For example, The commen code to deal with haveing only a keybord
> read would be...
>     unsigned userinput;
>         if(kbhit()) userinput=getkey() //or getch()
> 
>     but the problem is that it does not get the first key you press. You
> often get a delay or you have to press the key twice. Does anyone know
> how to deal with this problem?
>             Thnaks,
>                -Ardy
>         http://www.addr.com/~ardy/
> 
> 
I'm french, sorry for my bad english.
I made this function in ASM for DJGPP.
It seems to work, but it isn't sure.

char scan_kb()
  {
   char k;
   asm ("
             movb $1,%%ah
             int $0x16
             jz  pas
             movb $0,%%ah
             int $0x16
             movb %%ah,%0
             pas:   "

             :"=0"(k)
             :"a"(k)
       );
  return k;
}

It works like kbhit() and getch() combined.
If it doesn't work, send me a message.
jacquespierre DOT pique AT hol DOT fr