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| | IRQ - Wikipedia, the free encyclopedia |
 | | An IRQ or interrupt request is the means by which hardware components request computing time from the CPU. | | | In Pentium-class (and some 80486-class) computers the IRQs can be handled by the I/O APIC. | | | The modern IBM PC compatible computer has 16 IRQ assignments (0-15), each one representing a different physical (or virtual) piece of hardware. |
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http://en.wikipedia.org/wiki/IRQ
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| | Computer System Resource Information |
| | Every IBM compatible computer has a maximum of 15 IRQs and are prioritized in the computer according to the importance of the device. | | | The first and easiest way would be to attempt to remove devices from the computer to allow IRQs to become free and or substitute for external devices. | | | However generally it is a good idea to assign devices that you wish to move and do not plan to use to IRQ 9 to allow extra IRQs for a device you may plan to use. |
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http://www.computerhope.com/irqs.htm
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| | A Guide to Adapters and I/O units. |
| | IRQs are only one of the problems with ISA boards. | | | When the IRQ is activated, the drive programs for the two adapters are checked, to identify which is on the bus. | | | The solution is to change the IRQ of the adapter. |
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http://www.karbosguide.com/hardware/module5a3.htm
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| | PC Hell: Explanation of IRQ's, DMA's, and Conflicts |
| | This is why IRQ conflicts are probably the #1 problem faced by computer users when they add hardware to their computer. | | | IRQ's are hotlines to the main computer (CPU) that allow devices connected to the computer to signal the CPU that they need immediate attention. | | | Not all devices require IRQ lines, which is good news because in modern (post IBM XT) computers, we only have 16 of them. |
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http://www.pchell.com/hardware/irqs.shtml
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| | interrupt request - a Whatis.com definition - see also: IRQ |
| | An IRQ (interrupt request) value is an assigned location where the computer can expect a particular device to interrupt it when the device sends the computer signals about its operation. | | | Since multiple signals to the computer on the same interrupt line might not be understood by the computer, a unique value must be specified for each device and its path to the computer. | | | Prior to Plug-and Play (PnP) devices, users often had to set IRQ values manually (or be aware of them) when adding a new device to a computer. |
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http://whatis.techtarget.com/definition/0,,sid9_gci214042,00.html
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| | IRQ - Interrupt ReQuest |
| | Since multiple signals to the computer on the same interrupt line might not be understood by the computer, a unique value must be specified for each device and it's path to the computer. | | | IRQ problems occur because two pieces of hardware try to use the same IRQ. | | | Some interruptions are caused as a result that different devices are trying to use the same irq (see 'my computer' devices). |
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http://www.auditmypc.com/acronym/IRQ.asp
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| | PC911 - Friendly Computer Help In Plain English |
| | The simplest way to understand IRQ's is to consider the IRQ as a doorbell
when a device requires CPU attention, it places a signal on its assigned IRQ line. | | | There is a certain amount of prioritization that occurs due to IRQ lines, but the effect of this prioritization is not really noticeable on today's high-speed computers. | | | The Intel 8259A IRQ controller chip accepts this interrupt request and passes it on to the processor's interrupt line. |
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http://www.pcnineoneone.com/howto/irq1.html
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| | PCRecording.com - - your best source for information on the Digital Audio Workstation. |
| | For instance, if you have a scanner card that is hardwired to IRQ 5 and an old Soundblaster that is hardwired for IRQ 5, there is nothing you can do. | | | For instance, you may have an old scanner card inserted in an ISA slot that is jumper-configured to IRQ 5. | | | Most hardware components are now PnP compliant and do not result in IRQ problems. |
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http://www.pcrecording.com/irq.htm
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| | Windows 95/98 Support-irq steering |
| | This can occur if the IRQ settings are being read by your computer's BIOS. | | | Also bear in mind that after mapping to the ISA IRQ architecture occurs, the older ISA rules of one device per IRQ applies. | | | The assignment is done during the initial POST and can be achieved during normal operation of the computer. |
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http://cwdixon.com/support/win98_support/irq_steering.htm
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| | IRQ Conflict |
| | That is no problem when the IRQ is available, but it is a problem if there is another device assigned to that IRQ. | | | If possible, change the IRQ level of the device which is conflicting with the AccelPRO card. | | | That can be done in one of two ways depending on the options available on your system and on the other device using the shared IRQ. |
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http://www.es.com/resources/realimage/error_messages/irq_conflict.htm
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| | General Description of IRQ Sharing in Windows 2000 |
| | Per the Plug and Play capability that is defined by the PCI specification, adapters are configured by the computer's BIOS, and are then examined by the operating system and changed if necessary. | | | It is normal behavior for PCI devices to have IRQs shared among them, especially for Advanced Configuration and Power Interface (APCI) computers with Windows ACPI support enabled. | | | You cannot change the IRQ setting because the setting is unavailable. |
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http://support.microsoft.com/?kbid=252420
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| | Real World Technologies - IRQs Explained |
| | The other option is 'Legacy ISA', which means that the system is to reserve this IRQ for use by non-PnP (or Legacy) devices. | | | For this reason, any device or software requiring an interrupt cannot be made active without rebooting the machine and initializing it's interrupt address. | | | The theory was that most people did not understand IRQs, and so the more intelligent engineers would handle this difficult situation 'under the covers'. |
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http://www.realworldtech.com/page.cfm?ArticleID=RWT052498000000
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| | Solving PCI IRQ Problems |
| | The IRQ mapping is usually configured at boot time by the PCI BIOS setup, with the the exact assignment algorithm being BIOS-specific. | | | An IRQ has been assigned, but it has a software conflict. | | | Instead they can only select one of four "interrupt pins", which are mapped by the motherboard chipset to IRQ lines. |
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http://www.scyld.com/pci_irq.html
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| | Info for all *read me* IRQ, PNP, Sharing [Archive] - PC-Media Tech Forums |
| | This IRQ DOES appear on the I/O bus and on many systems it may be allocated by the user for devices. | | | This IRQ is not available on the I/O bus *unless* any onboard floppy controller is disabled and a floppy controller is installed in an I/O slot. | | | This IRQ does NOT appear on the I/O bus and can NOT be allocated for user devices. |
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http://www.pcmech.com/forum/archive/index.php/t-244.html
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| | Configuring a PC NIC - IRQ and I/O Base Information |
| | Which IRQ you assign to the card will depend on which IRQs are currently available on the system and on which IRQs the card is designed to access -- some cards present more options than others. | | | An "Interrupt request" (IRQ) is the means by which a device and the processor get each other's attention. | | | This may be available, unless the computer has both a serial mouse and a modem installed. |
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http://www.linfield.edu/%7Edarnett/helpages/NICinstall/configcardPCref.html
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| | SatisFAXtion - I/O Address and IRQ Conflicts |
| | Never use IRQ 2 in 286/386/486-based computers because IRQ 2 is used to "cascade" the two interrupt controllers. | | | CAUTION: Never use IRQ 5 in 8088/8086-based computers because IRQ 5 is used by your hard drive. | | | The best way to avoid a conflict is to know the I/O address and/or IRQ used by every device in your computer before adding a new device. |
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http://support.intel.com/support/faxmodem/4025.htm
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| | Annoyances.org - re: IRQ Sharing (Windows 98 Discussion Forum) |
| | An IRQ Holder for PCI IRQ Steering indicates that an IRQ has been programmed to PCI mode and is unavailable for ISA devices-even if no PCI devices are currently using the IRQ." there is a separate screen in the BIOS for disabling/enabling Plug-and-Play by Windows. | | | STELE: http://www.computeruser.com/articles/2007,5,21,1,0701,01.html says: "PCI bus IRQ steering gives Windows 98/SE/Me the flexibility to reprogram PCI interrupts when reconfiguring Plug-and-Play PCI and ISA resources around non-Plug-and-Play ISA devices. | | | >says “no IRQs available” right away whether I have the new modem in the computer |
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http://www.annoyances.org/exec/forum/win98/1089467091
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| | Amazon.com: Books: IRQ, DMA & I/O |
| | IRQs (interrupt requests), DMA (direct memory access), and I/O (input/output) error messages can be frustrating, but with this book/disk package youll resolve the system conflicts that cause them. | | | This book's second edition includes valuable information on SCSI and PCI interfaces, Windows 95 and Windows NT 4.0 device management, and a preview of what Microsoft's PC97 spec for plug-and-play devices will bring to the world of upgrades in the very near future. | | | The book equips you with the resources necessary to understand and properly manage your PC before, during, and after installing operating environments and systems. |
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http://www.amazon.com/exec/obidos/tg/detail/-/1558285652?v=glance
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| | Re: 3 PCI NIC's on OpenBSD 2.6(x86) sharing IRQ's |
| | This is with an Intel 440BX SMP-capable MB with only one CPU installed, in which a quad Adaptec Tulip card can't share IRQs with external fxp and lmc devices. | | | One addition: I have a system in which sharing PCI IRQs causes slowdowns and lockups, on recent hardware. | | | Re: 3 PCI NIC's on OpenBSD 2.6(x86) sharing IRQ's |
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http://www.monkey.org/openbsd/archive/misc/0011/msg00936.html
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| | FAQ on IRQ's |
| | Just about everything else on your computer will own its assigned IRQ from the time you power on the computer to the time you shut off. | | | Hopefully, you will now have a better picture of what the IRQs are and how they work, and a few secrets for adding more hardware to a PC than you might think by creatively sharing IRQs. | | | While there are a LOT of serial devices that can use non-standard IRQs, we do NOT recommend them because they are really a turkey to set up in your communication software, and they also use up valuable IRQs that could better be used elsewhere. |
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http://win95-help.brimac.com/irqfaq1.html
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| | PCMCIA IRQ Routing on Windows XP |
| | Therefore, system vendors should ensure that ISA IRQs are available to CardBus controllers in the system until the logo requirements described in this article help phase out this problem. | | | The Interrupt Service Routine (ISR) in the driver for the card was not designed to return the proper indication that a given IRQ was generated by its respective device. | | | CardBus cards are essentially PCI devices, and their interrupts are routed to PCI IRQs as defined by the PCI specification. |
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http://www.microsoft.com/whdc/system/bus/cardbus/PCMCIA-IRQrouting.mspx
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| | IRQTUNE -- A Linux IRQ Priority Optimizer |
| | When irqtune was first released, some experimental changes were made to the kernel to solve the IRQ priority problem by use of a round-robin, balanced priority system that was incompatible with irqtune. | | | We must change the IRQ of a device by physical restrapping--we can't do it by reprogramming the priority alone. | | | Even though they have one of the slowest data rates (relative to a disk), they are the largest consumer of interrupts and are extremely sensitive to interrupt latency (the time from when a device yanks the IRQ line until its ISR is executed). |
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http://cae.best.vwh.net/irqtune
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| | Technical Reference Infobase: IRQ Settings |
| | Interrupts are sent over one of the 15 IRQ wires on the computer's bus. | | | When the CPU receives an interrupt, it halts what it is doing to handle the necessary task. | | | Peripheral devices communicate with the CPU by means of IRQ's, or Interrupt ReQuest. |
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http://www.modems.com/glossary/glos13.html
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| | slow performance nic interrupt IRQ |
| | If this isn't exactly what you wanted, please try our Search (there's a LOT of techy and non-techy stuff here about Linux, Unix, Mac OSX and just computers in general!): | | | I need to know how I can manually assign > these NIC's to IRQ's lower than 16. | | | Start by figuring out whether it's a CPU, memory or disk bottleneck. |
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http://www.aplawrence.com/Bela/2391.html
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| | Linux-Kernel Archive: [2.5] IRQ distribution in the 2.5.52 ker |
| | (HZ/50) at which IRQs are moved across CPUs, it is not possible to | | | IRQs gets moved to a single CPU while other CPUs stay very lightly | | | We also have been working on a new implementation. |
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http://www.uwsg.iu.edu/hypermail/linux/kernel/0301.0/1886.html
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| | Glossary of Terms |
| | With Plug-and Play (PnP), users do not need to set IRQ values manually (or be aware of them) when adding a new device to a computer. | | | A standard bus (computer interconnection) architecture that is associated with the IBM AT motherboard. | | | Internetwork Packet Exchange - Networking Protocol used by the Novell NetWare OS Interrupt request line- Each device connected to a computer (microprocessor) must have a specified interrupt line value. |
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http://www.ami.com/support/glossary.cfm
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| | IRQ : Java Glossary |
| | A computer has 7 to 15 "shoulders ", each attached to a wire running the length of the computer bus. | | | If you don't the computer will not know it was your serial port that needed attention. | | | A device can demand the computer's immediate attention by sending a pulse down one of these wires. |
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http://www.mindprod.com/jgloss/irq.html
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| | IRQ defaults |
| | Below is a list of the most common bus interupt (IRQ) assignments for PC/XT bus and PC/AT (ISA, MCA and EISA) bus based systems. | | | Bus Interupt (IRQ) Assignments For PC/AT (ISA, MCA and EISA) Buses: | | | 5 8-Bit Hard Disk Controller (early Tandy 1000s used IRQ 2) |
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http://www.nthelp.com/IRQ.htm
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| | Webopedia: IRQ Numbers |
| | This interrupt is reserved for the floppy disk controller. | | | You are in the: Small Business Computing Channel | | | Prior to plug-and-play devices, users had to set IRQ values of devices manually when adding the device, such as a modem or printer, to a system. |
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http://www.webopedia.com/quick_ref/IRQnumbers.asp
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| | [No title] |
| | JOIN THE IRQ MAILING LIST HERE query, back2asciipr0n, | | | LISTEN 2 THE IRQ STREAMS o/~ o/~ o/~ o/~ |
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http://www.asciipr0n.com/irq
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| | LWN: Patch: 4KB stack + irq stack for x86 |
| | In addition, moving thread_info to the top of the stack results in better cache line sharing: thread_info is in the same cacheline as the first data pushed onto the irq stack. | | | accept_status); } +static void __init setup_irq_stack(struct task_struct *p, int cpu) +{ + unsigned long stk; + + stk = __get_free_pages(GFP_KERNEL, THREAD_ORDER); + if (!stk) + panic("I can't seem to allocate my irq stack. | | | This would simplify the irq entry code a bit as the same pointer can be used for the thread_info code and top of stack. |
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http://lwn.net/Articles/1642
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| | Computing.Net - Free IRQ 6 |
| | Does anyone know if it is possible to use IRQ 6 with other device than floppy disk? | | | I have tried disabling floppy disk in BIOS but it didn't work. | | | PLEASE READ THE FULL DISCLAIMER AND LEGAL TERMS BY CLICKING HERE |
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http://www.computing.net/dos/wwwboard/forum/14020.html
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| | IRQ - Interrupt ReQuest |
| | This can be thought of as a 'channel' that devices in your PC use when they want the processors attention, ie when you move the mouse or press a key, it is important that the IRQ settings in your machine are set correctly otherwise it can cause devices to conflict with each other. | | | For more on IRQ channels and how you can correct conflicts see our guide to IRQ channels in our upgrading section. |
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http://www.helpwithpcs.com/jargon/irq.htm
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| | Linux-Kernel Archive: Re: Severe IRQ problems on Foster (P4 Xeo |
| | Reply: Pavel Machek: "Re: Severe IRQ problems on Foster (P4 Xeon) system" | | | > read cycle to the PIC returns an IRQ level (0x07 = no IRQ active; it | | | Re: Severe IRQ problems on Foster (P4 Xeon) system |
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http://www.ussg.iu.edu/hypermail/linux/kernel/0203.2/0698.html
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| | Forcing IRQ on K7S5A and WinME |
| | I always thought (and still do) that is a function of the driver. | | | The video card doesn't like shraing the IRQ lines with the other devices, IRQ 4 is free as I do not use comm2. | | | The bios assigns it an IRQ of 11, which is shared with the onboard lan, sound and USB devices. |
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http://www.duxcw.com/dcforum/DCForumID7/740.html
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| | Linii de cerere de întrerupere (IRQ) |
| | Un IRQ este o linie hardware utilizată într-un PC de (magistrala ISA) dispozitive precum tastatura, modemuri, plăci de sunet etc., pentru a transmite semnale de întrerupere microprocesorului. | | | Multe probleme hardware sînt rezultatul conflictelor de IRQ, cînd două dispozitive încearcă să utilizeze acelaşi IRQ sau software-ul este greşit configurat să utilizeze un IRQ diferit de cel pentru care este de fapt configurat dispozitivul. | | | Pe anumite sisteme informaţiile despre IRQ nu pot fi afişate încă. |
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http://www.ro.kde.org/docs/kde33/kinfocenter/interrupts/index.html
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| | IRQ - Internet Service 4 u - Webdesign, Beratung, Open Source |
| | IRQ erstellt im Einklang mit Ihren persönlichen Wünschen und Vorstellungen ein individuelles Design für Ihre Homepage und Ihren Webauftritt und erarbeitet mit Ihnen Lösungen für Ihre Internet Projekte. | | | IRQ - Internet Service 4 u - Webdesign, Beratung, Open Source | | | Lesen Sie nach, wie das Internet entstanden ist und wer dazu beigetragen hat, dass es heute über 600 Mio. |
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http://www.irq.at
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| | PCTEL irq selection:where are the developers? |
| | ENABLE_SERIAL_PNP */ ------------------------ ptserial.c If you ask me, it should be possible instead of the #define's to specifiy the irq and the io-base with parameters. | | | Next by thread: Re: PCTEL irq selection:where are the developers? | | | Tests will go until mid of this week, don't ask me for the driver, except you are willing to test. |
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http://linmodems.technion.ac.il/archive/msg00243.html
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| | Web Tech: IRQ Conflict Resolution, DOS Driver - Elo TouchSystems |
| | IRQ 2 is tied to IRQ 9 and may or may not work as a PC-Bus controller IRQ. | | | For E271-2201 AccuTouch PC-Bus controllers, jumpers need be set only for I/O port address changes; the IRQ is selectable completely through the software setting. | | | IRQs 5 and 7 are assigned to line printers, which seldom use interrupts. |
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http://www.elotouch.com/Support/webtech/dosprelimirq.asp
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| | Encyclopedia.it: Hardware |
| | operativo di assegnare automaticamente all’ hardware compatibile risorse hardware quali IRQ, porte di I... |
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http://www.encyclopedia.it/computer/hardware
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| | DVP IRQ Settings |
| | The default in both the DVP card and DVPTSR is IRQ 7 (JP5), so most users are not even aware of this possible variation. | | | However, the number must match the jumper setting on the DVP card itself. | | | The DVPTSR also has a parameter to specify IRQ and will accept any number. |
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http://www.k1ea.com/hints/dvp_irq.htm
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| | IRQ Sharing... |
| | I know is not a memory thing and not a heat problem becuase I tested...anyways I think I have figured out the problem its because my Geforce2 mx400 is using the same IRQ as my Soundblaster 5.1. | | | The best is to direct 9, 10, or 11 to the PCI soundcard. | | | See in Advanced settings or PCI settings if you can assighn IRQ's to a PCI slot. |
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http://www.duxcw.com/dcforum/DCForumID3/490.html
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| | indexof / |
| | IRQ ====> a monthly evening of art music & technology FUNHAUS TORONTO ONTARIO CANADA is looking for work 2b featured @IRQ5...... | | | no artist st8mnt req'd contact us @ irq@asciipr0n.com or "voice" 416.534.5417 fi done please see http://asciipr0n.com/irq/ IRQ mailing list loc8d @ http://misterbonnie.com/cgi-bin/mailman/listinfo/irq bcnu suzanne and/or misterbonnie bonnie@melchior:~/irq$ logout Connection to melchior closed. |
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http://www.asciipr0n.com/irq/c4s.html
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| | IRQ problem |
| | Im doing a freash install of windows xp pro im getting sonar4 real soon...so im doing alot of prep work. | | | ACPI will be able to handle mose IRQ issues in WinXP. | | | All Forums >> [Products] >> SONAR >> IRQ problem |
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http://forum.cakewalk.com/tm.asp?m=402630
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