Re: Schematic for IIc mouse?

[Jerry <awanderin@yahoo.ca>]

zwsdotcom@gmail.com writes:

> On Apr 5, 10:37 am, Michael Black <et...@ncf.ca> wrote:
>
>> > here. I want to see if it's possible to modify the Macintosh M0100
>> > [DE-9] mouse to work with the IIc [also DE-9]. No ADB in sight
>>
>> YOu can't get much simpler than the original Macintosh mouse.  The
>> mechanical wheels, the optocouplers, the 339 comparators to sharpen
>> up the signals, and the pushbuttons.
>
> "pushbutton/S/"? :)
>
>> If I needed a IIC mouse, I'd just modify a mouse and see if there were
>
> Ow! Ow! My head, hitting the table over and over again!
>
> This is exactly what I want to do. I have lots of Mac 9-pin mice. I've
> looked inside and agree that it's amazingly simple. These mice do not
> work with the IIc. Since I don't have access to a IIc mouse, I don't
> know what the differences are. Whatever the critical parameter might
> be, the Mac is apparently much less finicky, because according to
> everything I've read, /all/ 9-pin mice will work with the Mac, but not
> all of them will work with the IIc.

I haven't read through it in detail, but perhaps US patent 4,816,810
will shed some light on the electronics.  It is for the Apple IIc
mouse.

-- 
--
Jerry    awanderin at yahoo dot ca