Sharing Interrupts on a PS/2

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#3170

From: Gerry Lachac
Date: Fri, 31 May 1991 19:40

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I have a question concerning the sharing of interrupts by a device
driver on a PS/2.  If I have two drivers that request the same
interrupt using the SetIRQ DevHlp, which ISR (interrupt service
routine) is called first?  For example :

	Driver A calls  SetIRQ(3,ISRa) and later,
	Driver B calls  SetIRQ(3,ISRb)


When an interrupt 3 comes in, does OS/2 call Driver A's ISR first
(since it was the first set) or Driver B's?



-gerry




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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!wuarchive!uunet!dialogic!gerry
From: gerry@dialogic.com (Gerry Lachac)
Newsgroups: comp.os.os2.programmer
Subject: Sharing Interrupts on a PS/2
Keywords: driver sharing interrupts PS/2
Message-ID: <1991May31.194019.3122@dialogic.com>
Date: 31 May 91 19:40:19 GMT
Organization: Dialogic Corporation
Lines: 25