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From: jcs@crash.cts.com (John Schultz)
Newsgroups: comp.sys.amiga.programmer,comp.sys.amiga.hardware
Subject: Re: I *STILL* need help with the POTGO resource!
Message-ID: <1991Jun13.080855.18406@crash.cts.com>
Date: 13 Jun 91 08:08:55 GMT
References: <-J#-M6C@engin.umich.edu>
Organization: Crash TimeSharing, El Cajon, CA
Lines: 22

In <-J#-M6C@engin.umich.edu> chymes@uri.csmil.umich.edu (Charles Hymes) writes:

>I tried other code as well, but the values at pot1dat never change no
>matter what I do at the gameport. If I connect pins 5 or 9 to (the X
>and Y pot pins) to pins 7 or 8 (+5 volts and Ground respectively)
>Nothing changes at pot1dat.
>Potinp changes the way you would expect it to, but I don't want on/off
>values, I want the 8-bit values one expects from the Pots.

  Allocate the bits (resource) first, then hit the hardware bits directly.
Get the latest RKM and hardware manuals. The old white manuals are extremely
outdated.  Complete examples of using the potgo resource exist in the public
domain.
  Another bit of info you'll need is this: 1Meg ohm pots are needed
to get 0-255 readings from the hardware. You can get close by adding
.22 microfarad capacitors across the pot lines of off-the-shelf IBM PC
joysticks. I recommend the CH Products Flight Stick. Smooth as silk. About
$50. One of these days I'll sell an adaptor/splitter to allow X-Specs and
an IBM analog joystick in the same port... Anyone interested?


  John