Subject: M27. What are the NeXT mouse connections and alternatives?
[From: eric@***.ca]
Thanks to *** Austin (austin@***.Ca) I have the information I
need on the NeXT mouse connections.
Pin Function
1 +5v
2 X Encoder Phase A
3 X Encoder Phase B
4 Y Encoder Phase A
5 Y Encoder Phase B
6 Right Button
7 Left Button
8 Ground
[From: Tom.***@***.edu]
The MS mouse comes with a "Mini HDIN" 9-pin plug. I found no
way to use this, and had to cut the cable and wire to a mini
DIN 8-pin plug. If you haven't built a cable with an 8-pin
mini DIN before, take the advice that has been offered here
before and don't try to solder to the plug -- get a cable with
bare wires or a cable with the plug on one end (lots of Macs
use these) and cut it.
On to the details. Notice that if the pins weren't numbered
differently, the layout would be approximately the same. The
MS mouse doesn't use switch numbered 2. And there is no
reason I know of that another MS mouse need have the same
color coding, so check it against the pins after cutting the
cable.
NeXT mouse wiring:
1 +5V
2 XA
3 XB
4 YA
5 YB
6 right button
7 left button
8 ground
shell chassis ground
pinout:
6 7 8
3 4 5
1 2
Microsoft Bus Mouse wiring:
1 switch (2)
2 left switch (3) Blue
3 ground Black
4 XB White
5 YA Orange
6 YB Yellow
7 right switch (1) Green
8 +5V Red
9 XA Brown
pinout:
1 2 3
4 5 6 7
8 9