Operation of InPort Chip Versions 1.00 and 1.10 Versus 1.20 (49003)



The information in this article applies to:
    Microsoft Mouse driver for MS-DOS 6.x
    Microsoft Mouse driver for MS-DOS 7.x
    Microsoft Mouse driver for MS-DOS 8.x
    Microsoft InPort Mouse 1.x

This article was previously published under Q49003

SUMMARY

Versions 1.00 and 1.10 of the Microsoft Mouse InPort Chip operates in the timer interrupt mode (mouse service routine interrupt occurs at a fixed rate).

Version 1.20 of the InPort Chip operates in the data interrupt mode (mouse service routine interrupt occurs whenever mouse data is present).

This information applies to the Microsoft InPort Mouse, versions 1.00, 1.10, and 1.20.

Modification Type: Major Last Reviewed: 10/3/2003
Keywords: KB49003