[Coco] OS9 Joystick/Mouse question

[Steve Bjork]

Bill,

No.

Have you every wonder why CoCo games ask if you using a Joystick or 
Keyboard to play?  That's why.  (If they did not then they must have the 
joystick plug in to play.)

The Joystick hardware in the CoCo can only gives a value from 0 to 63 
based on the Position/Voltage.  There is not data that can be returned, 
like an error state of no device plugged in.

Yes, there is a number returned when nothing is plugged in.  But, that 
number is same as the Joystick in that same position.

My easy trick was to look for the Button pressed of the joystick the 
player wanted to use and go from there.

Steve

On 9/7/2013 10:32 AM, Bill Pierce wrote:
> Hi,
> Is there a way (in software) in OS9 to check to see if a joystick or mouse are connected?
> I konoy how to turn the mouse on/off, check it's values, set the resolution and what side it's on, but I haven't found a way to check to see if one is connected.
> The idea is for a program to do a mouse check on startup, if present then default to it, if not, default to the keyboard.
>
> Thanks