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From: rogden@uceng.UC.EDU (rob ogden)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: INT2 on XT-AT-386
Message-ID: <7504@uceng.UC.EDU>
Date: 19 Feb 91 16:40:08 GMT
Organization: Univ. of Cincinnati, College of Engg.
Lines: 18

My docs show that an XT has one INT controller chip and
that INT 2 is not used. Furthermore, the docs show that the
AT&386 machines use INT2 as an input from a second controller
chip. Two questions.

1) On an AT class machine, can an interface card share the INT2
   with the motherboard's #2 controller chip.

2) On any ISA bus machine, can any two interface cards share the
   same interupt number? For example, #5&7 seem to be used by cards
   that are not parallel I/O.

Thanks,

Rob Ogden
rogden@uceng.UC.EDU
Aerospace Engineering and Engineering Mechanics, ML70
University of Cincinnati, Cincinnati, OH 45221   513/556-3549