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Article #6254Re: Relationship between IRQ's & INT's ?
From: D'Arcy J.M. Cain
Date: Sat, 02 Jan 1993 00:30
Date: Sat, 02 Jan 1993 00:30
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bomr@erich.triumf.ca (Rod Nussbaumer) writes: >there is the possibility of intercepting the software interrupt service >routine invoked by a hardware interrupt, since the CPU INTerrupts are mapped >one-to-one to IRQ's. And the relationship is IRQ x is handled by INT (x + 8). For example, the first COM port triggers IRQ 4 and this can be handled by hooking into INT 12 (0x0c) -- D'Arcy J.M. Cain (darcy@druid.com) | D'Arcy Cain Consulting | There's no government Toronto, Ontario, Canada | like no government! +1 416 424 2871 DoD#0082 |
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Newsgroups: comp.os.msdos.programmer Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!usc!cs.utexas.edu!torn!utzoo!telly!druid!darcy From: darcy@druid.uucp (D'Arcy J.M. Cain) Subject: Re: Relationship between IRQ's & INT's ? Message-ID: <1993Jan2.003007.26096@druid.uucp> Date: Sat, 2 Jan 1993 00:30:07 GMT References: <C02IqK.11E@dutiws.twi.tudelft.nl> <30DEC199211564476@erich.triumf.ca> Organization: D'Arcy Cain Consulting Lines: 14