Re: Joystick Devices

[nathan@cco.caltech.edu (Nathan Mates)]

In article <Pine.A32.3.93.960801074240.45609A-100000@freenet4.afn.org>,
Donald 'X-caiver' Pattee Jr  <afn45687@afn.org> wrote:
>Yes, I tested the buttons and such using my little BASIC program. That is
>where I dcided that I could not get any valid position data.
>I was using the print peek(29250) [and the other numbers in that area) to
>detect button presses and joystick position.

   Unless you've got some machine language things loaded, the joystick
info is definitely _not_ in that area. 29250 = $7242, which is
available main ram for programs.

   Further, you can _NOT_ reliably read the joystick from Basic with
PEEK()s. Because the joystick is essentially an analog device, you
must call a tightly calibrated machine language loop which performs
the necessary info to do the A-D conversion. Use PDL(0) and PDL(1)
to read it.

   P.S. Lose the large .sig

Nathan Mates
-- 
<*> Nathan Mates http://www.ugcs.caltech.edu/~nathan/      <*>
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