Article View: alt.msdos.programmer
Article #1108Re: IRQ2 or IRQ5
From: Pete Cascio
Date: Mon, 11 Jan 1993 09:24
Date: Mon, 11 Jan 1993 09:24
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1506 bytes
In article <zvtTrAsDBh107h@dadstoy.gbdata.com>, zatar@dadstoy.gbdata.com (Terry Stockdale) writes... > >That's "cascade" as in falls into a bunch of pieces. The IRQ2 was split >at the time of the AT (I think) to provide more interrupts for use. Eight >bit cards still can't use the bigger numbers, but I understand that the >16bit cards that need interrupts can do so. > >According to my new motherboard's manual, here they are: > >IRQ 2 |--IRQ 8 Realtime clock interrupt > |--IRQ 9 INT 0AH > |--IRQ 10 Reserved > |--IRQ 11 Reserved > |--IRQ 12 Reserved > |--IRQ 13 Coprocessor > |--IRQ 14 Hard Disk > |--IRQ 15 Reserved IRQ15 isn't exactly "reserved." At least not to Artisoft. My LANtastic Ethernet card had the option of using IRQ2 for 8-bit PC's or IRQ15 for AT buses.
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<1993Jan11.093205.2220@nntpd2.cxo.dec.com>Path:
arc1-ca.pugleaf.net!sparky!uunet!usc!zaphod.mps.ohio-state.edu!darwin.sura.net!haven.umd.edu!decuac!pa.dec.com!nntpd2.cxo.dec.com!comet.enet.dec.com!cascioReferences:
<1993Jan7.122713.17450@walter.cray.com> <zvtTrAsDBh107h@dadstoy.gbdata.com>Show Full Headers
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Newsgroups: alt.msdos.programmer,comp.msdos.programmer,comp.os.msdos.programmer,comp.sys.ibm.pc.programmer Path: arc1-ca.pugleaf.net!sparky!uunet!usc!zaphod.mps.ohio-state.edu!darwin.sura.net!haven.umd.edu!decuac!pa.dec.com!nntpd2.cxo.dec.com!comet.enet.dec.com!cascio From: cascio@comet.enet.dec.com (Pete Cascio) Subject: Re: IRQ2 or IRQ5 Message-ID: <1993Jan11.093205.2220@nntpd2.cxo.dec.com> Sender: usenet@nntpd2.cxo.dec.com (USENET News System) Organization: Digital Equipment Corp. Consulting Services, Colorado Springs References: <1993Jan7.122713.17450@walter.cray.com> <zvtTrAsDBh107h@dadstoy.gbdata.com> Date: Mon, 11 Jan 1993 09:24:13 GMT Lines: 21