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   comp.lang.asm.x86      Ahh, the lost art of x86 assembly      4,675 messages   

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   Message 3,441 of 4,675   
   R.Wieser to jj4public@nospicedham.vfemail.net   
   Re: a cursor you move with arrow keys   
   17 Jun 18 18:18:09   
   
   From: address@nospicedham.not.available   
      
   JJ,   
      
   > Don't arrow keys have the same key scan codes?   
      
   Good question, and one I do not know the answer to anymore. :-(   
      
   > AFAIK, IBM PC compatible keyboard scan code differences   
   > are mostly the prefix code of extended keys, not the key code   
   > itself.   
      
   All I know is that I once wrote a DOS program which used INT 16h (way before   
   Win95), and stopped working when I replaced the keyboard.   Some checking   
   showed that the old and the new keyboard returned different values for some   
   of the special keys (as I said, I'm not sure which ones anymore).   
      
   > BTW, do you know the scan codes for Meta, Hyper, and Super keys?   
      
   Ehrm... no.  This is the first time I'm hearing about such a classification.   
   :-)   
      
   But you've made me curious, could you tell me/us what they are (like which   
   keys belong to each of those groups) ?   
      
   Regards,   
   Rudy Wieser   
      
      
      
      
   "JJ"  wrote in message   
   news:ob9m3ysqz8ye$.uypqkfa0nkdn.dlg@40tude.net...   
   > On Sun, 17 Jun 2018 13:07:21 +0200, R.Wieser wrote:   
   >>   
   >> Warning: "BIOS scan codes" are *not* neccessarily the same for all   
   >> keyboards, specifically not for "special keys".   
   >   
   > Don't arrow keys have the same key scan codes? AFAIK, IBM PC compatible   
   > keyboard scan code differences are mostly the prefix code of extended   
   > keys,   
   > not the key code itself.   
   >   
   >> Been there, done that, learned a lesson. :-)   
   >   
   > What keyboards have you used? I'm curious because I'm kind of obsessed   
   > with   
   > keyboards. Especially the ones with 24 function keys. :)   
   >   
   > OT...   
   > BTW, do you know the scan codes for Meta, Hyper, and Super keys? I've   
   > already searched the net for the technical specifications of keyboards   
   > which   
   > have those keys, but there doesn't seem to be any available.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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