Recommendation of unshared IRQ with USB 2.0 PCI-card; but three IRQs !!!

[Bernd Bubis]

It is recommended, to give interrupt-intensive PCI-cards an unshared
IRQ. My USB2 PCI-card is such a card (Adaptec AUA-2000LP; 2 USB 2.0
outputs). However, this PCI-card does not only have one IRQ but three
!!!

They are the following ...

1. Adaptec AUA-2000LP PCI to USB Enhanced Host
Controller
2. NEC PCI-to-USB Open Host-Controller
3. NEC PCI-to-USB Open Host-Controller

So, do they all need to be unshared (pretty much impossible, actually)
or is it enough for certain ones to be on unshared IRQs?




XXCCII USB2 USB 2.0 Adaptec AUA-2000LP AUA2000LP

 

[JAD]

what OS are you using? With ASPI its pretty hard to get XP 2000 to 'take' an IRQ unshare

 

[Bernd Bubis]

Windows 2000 Pro

With Device Manager/Computer in ACPI mode it is indeed hard (or
impossible?) to grant an unshared IRQ. But I do have an installation
with Device Manager / Computer in StandardPC mode. In this mode it is
possible to assign unshared IRQs, I believe.

 

[Shep©]

On 25 Sep 2003 14:12:26 -0700, In this world we created

It is recommended, to give interrupt-intensive PCI-cards an unshared
IRQ. My USB2 PCI-card is such a card (Adaptec AUA-2000LP; 2 USB 2.0
outputs). However, this PCI-card does not only have one IRQ but three
!!!

They are the following ...

1. Adaptec AUA-2000LP PCI to USB Enhanced Host
Controller
2. NEC PCI-to-USB Open Host-Controller
3. NEC PCI-to-USB Open Host-Controller

So, do they all need to be unshared (pretty much impossible, actually)
or is it enough for certain ones to be on unshared IRQs?




XXCCII USB2 USB 2.0 Adaptec AUA-2000LP AUA2000LP

Bad hardware designers use this as a,"Cop-out".Have you tried the card
just,"As-is" e.g just install it?



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[Bernd Bubis]

Yes. And I am having massive problems with USB2.

On 25 Sep 2003 14:12:26 -0700, In this world we created


Bad hardware designers use this as a,"Cop-out".Have you tried the card
just,"As-is" e.g just install it?

 

[Shep©]

On 30 Sep 2003 16:21:05 -0700, In this world we created

Yes. And I am having massive problems with USB2.

Try here,
http://www.usbman.com/Troubleshooter General.htm
and,
http://www.usbman.com/USB 2 News.htm

HTH






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It's a G not a J in jmx to reply
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