[vcf-midatlantic] Known-good IBM joystick?
Jonathan Gevaryahu
jgevaryahu at gmail.com
Wed Jul 11 02:44:34 EDT 2018
On 7/10/2018 11:53 AM, Evan Koblentz via vcf-midatlantic wrote:
> In a test program, I was only getting a range of about 5 to 195, vs. 0-255.
Unless you have a really, REALLY good joystick, you probably won't get
the full 0-255 range for either X or Y no matter what, and depending on
how the joystick's motion is restricted, you won't be able to even hit
the corners fully.
This is why many dos games had an option to calibrate the joystick, to
set its center postion and the lower left/upper right positions which
would roughly correspond to min x min y and max x max y, then take those
value and scale them to the desired range with some math.
It is also not a bad idea to compensate for the joystick having a 'dead
zone' near the center where putting no significant force on the joystick
makes it move within a small range, software should compensate and
consider the joystick centered unless it leaves that 'dead zone'
--
Jonathan Gevaryahu
jgevaryahu at gmail.com
jgevaryahu at hotmail.com
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