I've been comparing my old DE-9 mice and have come up with a question. In particular I am comparing the following mice (all of which are made in the USA unless otherwise specified):
M0100/Macintosh (beige/taupe) – square taupe connector/590-0146
M0100/Apple IIc (all cream) – square cream connector/590-0206
M0100/Macintosh (beige/taupe) – rounded taupe connector/590-0320
A2M4035/Apple IIc (all cream) – rounded cream connector/590-0203
M0100/Macintosh – Platinum (Japan)/590-0355-A
M0100/Macintosh – Platinum (Malaysia)/590-0055-A
I know there are also the following mice I don't have:
A2M2050?/AppleMouse II, for IIe, IIPlus & II (beige/taupe Mac style) – square cream connector/?
Model?/AppleMouse II, for IIe, IIPlus & II (all cream Apple IIc style) – rounded cream connector/?
A2M2070/Apple IIe (beige/taupe Mac style) – rounded taupe connector/590-0320
A2M2070/Apple IIe – Platinum/590-0369
A2M4035/Apple IIc (Mac/IIe style) – Platinum/590-0369
And for completeness:
A9M0050/Lisa – squeeze taupe connector/?
PN?/Lisa – thumbscrews ?/?
(This website gives some excellent details
http://www.decodesystems.com/apple-mice.html)
Does anyone have anything else, any other countries, or can fill in the missing details? Particularly the internals of the Apple II/e mouse variants.
Now for my question: In looking at the internal mechanisms, I discovered that all of the Mice are essentially identical with respect to parts and circuit board components: in particular they all contain an IC chip, except the very first Apple IIc & Macintosh square connector mice, which are conspicuous by the absence of the chip.
That leads me to ask several things:
1) What is that IC chip there to do? (The Mac Family Hardware Guide doesn't elaborate)
2) The Apple IIc can't use the Macintosh mouse because it uses pin 1 to identify the device connected to its combo game/mouse port and the Mac's pin 1 is wired to ground. How then does the IIc mouse identify itself?
3) If all the other mice have IC chips, why do the mice without a chip also work work just fine on a Macintosh?
That's it for now ...
M0100/Macintosh (beige/taupe) – square taupe connector/590-0146
M0100/Apple IIc (all cream) – square cream connector/590-0206
M0100/Macintosh (beige/taupe) – rounded taupe connector/590-0320
A2M4035/Apple IIc (all cream) – rounded cream connector/590-0203
M0100/Macintosh – Platinum (Japan)/590-0355-A
M0100/Macintosh – Platinum (Malaysia)/590-0055-A
I know there are also the following mice I don't have:
A2M2050?/AppleMouse II, for IIe, IIPlus & II (beige/taupe Mac style) – square cream connector/?
Model?/AppleMouse II, for IIe, IIPlus & II (all cream Apple IIc style) – rounded cream connector/?
A2M2070/Apple IIe (beige/taupe Mac style) – rounded taupe connector/590-0320
A2M2070/Apple IIe – Platinum/590-0369
A2M4035/Apple IIc (Mac/IIe style) – Platinum/590-0369
And for completeness:
A9M0050/Lisa – squeeze taupe connector/?
PN?/Lisa – thumbscrews ?/?
(This website gives some excellent details
http://www.decodesystems.com/apple-mice.html)
Does anyone have anything else, any other countries, or can fill in the missing details? Particularly the internals of the Apple II/e mouse variants.
Now for my question: In looking at the internal mechanisms, I discovered that all of the Mice are essentially identical with respect to parts and circuit board components: in particular they all contain an IC chip, except the very first Apple IIc & Macintosh square connector mice, which are conspicuous by the absence of the chip.
That leads me to ask several things:
1) What is that IC chip there to do? (The Mac Family Hardware Guide doesn't elaborate)
2) The Apple IIc can't use the Macintosh mouse because it uses pin 1 to identify the device connected to its combo game/mouse port and the Mac's pin 1 is wired to ground. How then does the IIc mouse identify itself?
3) If all the other mice have IC chips, why do the mice without a chip also work work just fine on a Macintosh?
That's it for now ...