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Discussion Topic:
Booting to Mirror - Motherboard Issues
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Webmaster |
05-28-2002 @ 3:28 PM
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Administrator
Posts: 44
Joined: May 1999
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Configuring PCI IRQ resources
Setting the IRQ for a particular PCI slot will be different depending on the motherboard
BIOS. This setting is usually made in the PCI Configuration and/or Plug and Play (PnP)
section of the motherboard BIOS setup. There are three common methods that
motherboard BIOS’s handle assignment of IRQs to PCI slots:
1. Specifically assigning an IRQ to a particular slot - You can tell the motherboard to
use IRQ 10 for PCI slot 1, IRQ 11 for PCI slot 2, etc.
2. Listing which IRQs are available to be assigned to the PCI slots - This BIOS has
an option where you specify “1st Available IRQ”, “2nd Available IRQ”, etc. The
BIOS then scans the PCI slots for PCI cards and assigns these IRQs in the order
that it finds the PCI cards.
3. Excluding an IRQ from being used by a PCI slot - If you have an ISA card that is
using an IRQ, change the setting for this particular IRQ from “Available” to “used
by ISA card” so that the motherboard will not assign this IRQ to a PCI slot.
Consult your motherboard manual for information that is specific to your motherboard.
This message was edited by Webmaster on 5-28-02 @ 3:35 PM
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Webmaster |
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05-28-2002 @ 3:32 PM
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Administrator
Posts: 44
Joined: May 1999
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Freeing additional IRQ resources -
Since our ATA133 RAID card supports PCI Interrupt sharing, it is possible to use IRQs already assigned to another PCI card. Interrupt Sharing is not supported with onboard IDE controllers. If the onboard IDE controller(s) are not used, you may disable the controllers to free IRQ 14 and/or 15
This message was edited by Webmaster on 5-28-02 @ 3:35 PM
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Webmaster |
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05-28-2002 @ 3:37 PM
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Administrator
Posts: 44
Joined: May 1999
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System locks up during bootup or when Windows starts
There may be a possible IRQ conflict with an ISA card. Identify what IRQs are used by ISA cards, enter the Mainboard PCI Setup, and reserve the IRQ for use with ISA.
PCI slots cannot share IRQs with ISA cards.
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Webmaster |
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05-28-2002 @ 3:39 PM
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Administrator
Posts: 44
Joined: May 1999
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Miscellaneous problems such as the ATA133 Raid card BIOS not appearing
during boot, the ATA133 Raid card driver not loading, or slow data transfer rates
Move the ATA133 Raid card to a different PCI slot.
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Webmaster |
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05-28-2002 @ 3:43 PM
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Administrator
Posts: 44
Joined: May 1999
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Intermittent data problems
Overclocking the PCI bus may cause data corruption or the system to hang. If you experience either of these problems, and are overclocking the PCI bus, set the PCI bus back to its normal setting to see if this stops the errors.
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