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Re: GS Mouse Adjustment?

William Garber wrote:

"Simon D. Williams" <bb065@chebucto.ns.ca> wrote in message
Pine.GSO.3.95.iB1.0.1061111142947.11520A-100000@halifax.chebucto.ns.ca">news:Pine.GSO.3.95.iB1.0.1061111142947.11520A-100000@halifax.chebucto.ns.ca...
: On Sat, 11 Nov 2006, William Garber wrote:
:
: > motion of the ball. I highly recommend this trackball,
: > or a similar well-built one. for those who have very
: > limited desk space. Only wish I had one for the IIe.
:
: I also use an orbit trackball on my IIgs... I wonder
: how hard it would be for some *clever hardware person*
: to build an adaptor for ADB or PS2 mice to plug in to
: the IIe mouse card???
: -s

Well, let's look at each one.

ADB devices are slaves to the Host, the computer, so
there would need to be some hefty firmware involved.
A microcontroller could maybe act as the host and go-
between to the mouse card.

PS/2 devices are serial devices, so that would not be
so hard, and also could use a microcontroller as the
intermediary between them.

I believe, and I will probably be corrected here,
that the mouse card accepts TTL signals derived from
resistance settings similar to analog joysticks.


The mouse card interprets digital encoder signals from
the mouse, much like a PC "bus mouse".  It's nothing like
an analog joystick.

In fact, "dual purposing" the joystick port on the IIc for
a mouse resulted in some very strange processing for the
inputs.

-michael

NadaNet networking for Apple II computers!
Home page:  http://members.aol.com/MJMahon/

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