🚀 go-pugleaf

On 10 Mar 90 23:26:57 GMT,
nraoaoc@nmtsun.nmt.edu (Daniel Briggs) said:

Daniel> In article <SORC.90Mar10131459@carina.unm.edu>
Daniel> sorc@carina.unm.edu (Paul Caskey) writes:
>
>I figured if I dug deep enough, there would have to be some way to ask
>the computer to go look at the space bar and tell me if it was up or
>down at any given instant.  But I really don't think you can.  If you
>do come up with a solution for this, I'd be really curious to see it.

Daniel> The usual way to do this is to catch the hardware keyboard
Daniel> interrupt yourself.  (This is interrupt nine, not sixteen.)
Daniel> The keyboard generates both a make and a break code for every
Daniel> keystroke.  (I am not certain about repeats in this context.)
Daniel> You maintain a flag like "space_is_down" in your program.  Set
Daniel> this true when you get a 'make code', and reset it to false
Daniel> when you get a 'break code'.  Note that the normal BIOS simply

Yeah!  Duh...how embarassing.  I can't believe I didn't see that.  For
some reason it didn't occur to me that it's good enough to know
whether a key has just been pressed or just been released, because
like you said, if it was pressed and not released yet, it's still
down. :-)   Sigh....I hate it when I look so hard for something that
I miss the obvious solution.  Ah well.

--
/*********/
     Paul Caskey
     pcaskey@ariel.unm.edu
     Only lawyers represent anyone's ideas but their own.
                                                  /*********/