>"I am doing a project which is relevant to gameport interface. I face
>the problem on reading analog input. One end of the potentiometer is
>connected to +5V pin and the center pin is connected to analog pin of
>the gameport. I do not use any joystick to test my gameport. I connect
>the potentiometer to the gameport directly. However I don't know how to
>read the value of analog input by using program written in Visual Basic.
>Besides that, I have download a joystick test program called Jcenter.exe
>from CH product. I am not really understand how it works. Does anyone
>know about it or any source code that I can refer to? "

>regards,
>Donny Tan

>http://www.piclist.com#nomail Going offline? Don't AutoReply us!
>email listserv@mitvma.mit.edu with SET PICList DIGEST in the body

To James Newton, PICList.com webmaster:
Isn't it a time to put a text "Look over MSDN first" as a bottom banner
in place of "Going offline? - SET PICList DIGEST " - the option seems
to be switched off.

To Donny Tan:
Ask James Newton; Battling for years with MS software, he had become
a MS software guru.

On the subject:

--- First approach:

Get documentation on
"Platform SDK:Microsoft DirectX 8.0 (Visual Basic)"
In a section "Direct Input Visual Basic" you can find all you want.

--- Second approach:

Get documentation on
"Platform SDK:Windows Multimedia":

The joyGetPosEx function queries a joystick for its
position and button status

The joyGetDevCaps function queries a joystick to
determine its capabilities.

How to handle them from VB look:
"Joystick.exe Calls the Joystick API Functions"

I was involved with the both approaches.
Them worked fine.
-----------------------------------------------------------

I'd rather change [OT] to [EE] for this mesage,
because PIC are the right tool to be used in emulating
a variable resistor in a joystick and in emulating a keyboard
to construct a really cool game input device.

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