Microspeed Trackball Incompatible with MS-DOS Shell (75227)
The information in this article applies to:
• Microsoft MS-DOS operating system 5.0
• Microsoft MS-DOS operating system 5.0a
This article was previously published under Q75227
The Microspeed Trackball driver version 2.1e or earlier may cause
problems when running with MS-DOS Shell. During the MS-DOS version 5.0
installation, you may get the following message:
The Microspeed Trackball PPR device driver does not work correctly
within MS-DOS Shell. To solve this problem, try one of the following:
• Install the device driver as a two-button mouse.
• Use MS-DOS Shell in 25-line graphics, low-resolution mode. To force
Shell into this mode, type the following when starting Shell:
NOTE: If you use Shell in text mode, the driver may cause Shell's
text to be the same color as the background screen color.
• If you are using a serial or PS/2 Trackball and still have
graphical or operational problems with the Microspeed PPR driver
with Shell, load the Microsoft Mouse driver MOUSE.COM instead of
the Microspeed PPR driver.
Windows users should refer to the document file named UNPACK.DOC on
Microspeed's PPR disk for additional information on using and
If you have the PDA Bus Card, refer to the Windows installation
sheet, section 2.0, that came with the Trackball. It has
information on how install the PDA Bus Card with the Microsoft
If you have the PDA bus version, be sure you have PPR software
version 2.1D or 2.1E to use the Microsoft Mouse driver.
If you have the Bus Interface Card (BIC) that came with PPR version
2.2A, you can use the Microsoft Mouse driver.
The products included here are manufactured by Microspeed, a vendor
independent of Microsoft; we make no warranty, implied or otherwise,
regarding these products' performance or reliability.
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