🚀 go-pugleaf

In article <15775@star.cs.vu.nl>, estel@cs.vu.nl (Stel E) writes:
> 
> Hai programmers,
> 
> I've made a simple Screen Saver. I'd like the program to work
> with both DOS and Windows programs. So I hooked it to the
> timer interrupt (0x1c). Every time this interrupt is generated
> (18.2 times a sec.) it checks the SHIFT status (scancode).
> If both SHIFT keys are pressed, the screen blanks, if some
> other key (SHIFT/ALT/CTRL) is pressed the screen unblankes.
> 
> The program has to check some things every time it's called.
> Can this slow down my machine too much? Can my clock start
> to run too slow (clock = DOS clock)? It's not so easy to
> test (my machine is quite fast). I couldn't notice any
> difference, not even when blanking/unblanking very fast and
> frequent.
> 
> I don't think it's a problem, but I wanna be sure.
> 
> 
> Thanks in advance,		Erik Stel (estel@cs.vu.nl)

Rather than checking at every clock tick, why not check with
each key press (Int 9).  This is much more efficient (at least
in my experience), and seems to make more sense.


-- 
Mike "Okie" Gillmore
no .sig, no glory