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From: | "Martin Czamai" <Martin_Czamai AT peak-service DOT com> |
Newsgroups: | comp.os.msdos.djgpp |
Subject: | Programming Hardware Interrupts |
Date: | Thu, 21 Oct 1999 16:57:56 +0200 |
Organization: | callisto germany.net GmbH |
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To: | djgpp AT delorie DOT com |
DJ-Gateway: | from newsgroup comp.os.msdos.djgpp |
Reply-To: | djgpp AT delorie DOT com |
Hi all again! I'm trying to program a short test-programm for a PCI device. The PCI controller gives me the correct data from the sub-device, which is an other, external controller. The interrupt-flags are reseted correct on both devices, but my interrupt serivce routine (ISR) works only once per booting :-((( My ISR consists the following parts: * read interrupt control register of the PCI controller to determine the reason for the interrupt * read the data from the corresponding external controller (this is not a PCI controller!) * reset interrupt flags from external controller * reset interrupt flags from PCI controller * send EOI to system interrupt controller In the main-part of the program I display the data I received (once) during the ISR. A global dummy counter variable tells me how often the ISR was called. Who has any tip to get started?? Thank you for your help and best regards Martin Czamai (Martin_Czamai AT peak-service DOT com)
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