[Coco] CoCo Trackball

[Torsten Dittel]

I guess the CoCo version has a µController whiSch is interpreting the
optical (digital) signals e.g. like the 6803 implemented in the ATARI ST
did (at least it seems to have a power supply). It might then output a
corresponding voltage between 0 and 5V using a DAC. This voltage goes
directly to the CoCo's joystick port where it's AD-converted like the
normal analog joystick. I'll tell you as soon as the unit is here. Will
be interesting to know how many bits this DAC has: I guess the trackball
won't work well with the CoCoMax Pak. Should be even less suitable for
the HiRes joystick interface.

Torsten

Dan Olson schrieb:
> 
> It'd have to be electrically different because the Amiga is digital
> (though an analog trackball wouldn't work too well, so it probably doesn't
> use the X/Y inputs?)
> 
> On second though, I have a "color mouse" I think.  It's been a long
> time....
> 
>         Dan
> 
> On Wed, 24 Jan 2007, Mark McDougall wrote:
> 
> > Dan Olson wrote:
> >
> >> I've got one of these.... but does any software use it?
> >
> > Interesting, I have a Wico Trackball which looks identical except for
> > the power supply input and the DIN plug - mine has a D9 'atari' style
> > connector (no power) for use with an Amiga...
> >
> > Regards,
> > Mark