Q49003: Operation of InPort Chip Versions 1.00 and 1.10 Versus 1.20

Article: Q49003
Product(s): See article
Version(s): 1.00 1.10 1.20
Operating System(s): MS-DOS
Keyword(s): ENDUSER | | mspl13_basic
Last Modified: 19-MAR-1990

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).

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