On Tuesday, March 14, 2000 12:28 PM, "Roberto Safora"
<[log in to unmask]> wrote:


> Reading a manual from Shuttle Hot 591p, they talk about changing  IRQ
> ROUTING MINIPORT DRIVER to win 98.....
> What is that? ( IRQ routing.....)
>

 Windows 95 OEM Service Release 2 (OSR2) and Windows 98 provide support for
PCI (Peripheral Component Interconnect) bus IRQ steering. By using IRQ
steering, Windows can dynamically assign ("steer") PCI bus IRQs to PCI
devices. It is possible for multiple PCI devices to share a PCI IRQ, however
ISA (Industry Standard Architecture) devices cannot share an ISA IRQ, and an
IRQ cannot be programmed for both modes at once.

PCI bus IRQ steering is disabled by default in OSR2. If you are using OSR2,
and want to enable PCI bus IRQ steering, follow there steps:Select Control
Panel > System, select the Device Manager tab and double-click the System
Devices branch.  Then double-click PCI Bus, and then click the IRQ Steering
tab. Select Use IRQ Steering.      When you are prompted to restart your
computer, click Yes.

IRQ Steering may be displayed as disabled in Device Manager for any of the
following reasons:
(1) your computers BIOS may not support PCI bus IRQ steering. For more
information, contact the manufacturer of your BIOS,

(2) the Use IRQ Steering check box is not selected. The IRQ routing table
that must be provided by the BIOS to the operating system may be missing or
contain errors. The IRQ routing table provides information on how the
motherboard is configured for PCI IRQ's and

(3) The Get IRQ table from Protected Mode PCIBIOS 2.1 call check box is not
selected.  By default, the Get IRQ table from Protected Mode PCIBIOS 2.1
call check box is not selected. You should only click this check box to
place a check mark if a PCI device is not working properly.

Note: If you have a VIA/ETEQ chipset on your motherboard, then you need to
download the IRQ Steering update from the Via Web Site. HTH. :-)

Walter R. Worth
[log in to unmask]

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