400 DPI Serial Mouse and the Maxir 386
ID: Q63227
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The information in this article applies to:
-
Microsoft Mouse driver for MS-DOS, versions 7.x, 8.x
-
Microsoft Serial-PS/2 Mouse, version 1.x
SUMMARY
When you try to install a 400 PPI PS/2 serial mouse on the 9-pin serial
port of a Maxir 386 machine, the mouse does not install.
This information applies to the Microsoft Serial Mouse for MS-DOS
systems.
MORE INFORMATION
When the 400 PPI PS/2 serial mouse is installed on the 9-pin serial
port as a serial mouse, it uses pins 2, 3, 4, 5, and 7 to communicate
with the serial port.
The other pins in the 9-pin connector are used when the PS/2 adapter
is connected to the mouse. Pin 8 of the built-in serial port, when set
to a logic zero, is 1 to 2 volts higher than the voltage that would be
present on an IBM-compatible serial port. When a logic 1 is present on
pin 8 and the mouse is connected to a 9-pin serial port, the mouse
cannot reset. This prevents the mouse from installing.
To work around this problem, do the following:
Use a 9- to 25-pin serial adapter to eliminate the signal
from pin 8. To do this, you need to purchase the adapter
from a local electronics store. This adapter has a 9-pin
female connector on one end and a 25-pin male connector
on the other end.
Once you have the adapter, perform the following steps:
- Attach the adapter you purchased to the built-in serial port of
your computer.
- Attach the mouse to the 25- to 9-pin serial adapter that was
supplied with your mouse.
- Attach this adapter to the 9- to 25-pin adapter that you have
already attached to your computer.
The Maxir product included here is manufactured by a vendor independent
of Microsoft; we make no warranty, implied or otherwise, regarding this
product's performance or reliability.
Additional query words:
maxer
Keywords :
Version : MS-DOS:7.x,8.x; :1.x
Platform : MS-DOS
Issue type :