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int 16h without wait for keypress

Posted on 1998-05-26
Medium Priority
Last Modified: 2011-10-03
I don't know how to make program for keyboard that wont wait for key to be pressed.
prg. that I have : mov ah,0
                            int 16h
That prg. waits until one key is pressed, but I need to run something paralel with this.
Question by:ssdjgru1
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1 Comment

Accepted Solution

kellyjj earned 800 total points
ID: 1217040
if you only call that code when there is a key actually pressed you should not be waiting.  
If you need other things to be done while waiting for this this is one way of doing it:

while (not done)
   if (vec=2)
   if (vec=3)
   if (vec=4)
   if (vec=5)
   if (vec=6)

   if keypressed  getKey();  (* this is the assembler code *)

This is called Vectorizing.  This will allow you to do other things while you are waiting for a key to be pressed.  Keep in mind that you don't want to get stuck waiting for anything inside that loop.

Hope this helps.

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