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- Xref: sparky alt.msdos.programmer:3134 comp.msdos.programmer:115 comp.os.msdos.programmer:11993 comp.sys.ibm.pc.programmer:770
- Newsgroups: alt.msdos.programmer,comp.msdos.programmer,comp.os.msdos.programmer,comp.sys.ibm.pc.programmer
- Path: sparky!uunet!rei2!fox
- From: fox@rei.com (Fuzzy Fox)
- Subject: Re: IRQ2 or IRQ5
- Message-ID: <1993Jan11.165837.6119@rei.com>
- Date: Mon, 11 Jan 1993 16:58:37 GMT
- References: <1993Jan7.122713.17450@walter.cray.com> <zvtTrAsDBh107h@dadstoy.gbdata.com>
- Organization: Recognition Equipment, Inc.
- Lines: 14
-
- >>Now I have a 386-SX system. IRQ 2 doesn't work anymore. All docu-
- >>mentation I have read has said that IRQ2 is a "cascade" interrupt.
- >>WHAT DOES THIS MEAN, AND HOW DO I MAKE IT WORK????
-
- The IRQ2 is used by the second interrupt controller. Interrupts coming
- in on IRQ2 are vectored to IRQ9 instead on a PC-AT. You can leave your
- hardware interrupt on IRQ2, but expect the interrupt vector to be IRQ9
- on the software side.
-
- --
- #ifdef TRUE | Fuzzy Fox (a.k.a. David DeSimone) fuzzy@netcom.com
- #define TRUE 0 |
- #define FALSE 1 | "911 Emergency Rescue Service - Can you hold, please?"
- #endif |
-