Can anyone explain to me what causes gameport jitter and what I can do to
eliminate it? Are there any pages or articles on the web that will help me
out?
I have a PDPI card, but still have problems calibrating my wheel in games
such as Need For Speed and CART Racing. It seems as if the PDPI drivers
only work well with Direct Input games.
-Andrew
On Wed, 7 Jun 2000 20:08:35 -0400, "AndrewS" <[email hidden]>
wrote:
>Can anyone explain to me what causes gameport jitter and what I can do to
>eliminate it? Are there any pages or articles on the web that will help me
>out?
The jitter is due to dirty analog hardware. Pots inside the wheel for
example. Eliminate it by cleaning them, or even replace them.
Or get a wheel with optical pots (MSFF for example).
>I have a PDPI card, but still have problems calibrating my wheel in games
>such as Need For Speed and CART Racing. It seems as if the PDPI drivers
>only work well with Direct Input games.
Yes, PDPI doesn't use the regular hardware joystick interface, so it
in fact works only through Direct Input. The special driver talks to
the PDPI card in a different way than to a normal joystick. I.e. it
just reads out digital values that are snapshots of what the card
thinks the state is.
Older analog joystick methods are timing the time it takes to get a
potentiometer or something to fill up or zero down. Which takes time.
(I don't know the real technical details). The PDPI does that in the
background, leaving only ready-to-read values for the Direct Input
driver.
Ruud van Gaal
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AndrewS wrote:
