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SubjectRE: DMA not supported with Intel ICH4 I/O controller?
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Roland,

Thanks for your response!

>It sounds like your board is acting as a PCI bus master. This is
>completely different from DMA for the IDE controller. External PCI

That's correct, we are a PCI bus master device.

>The BIOS on the P4PE may be setting
>your device up differently from the 815E motherboard. Your device
>might be confusing the BIOS on the P4PE so that the IRQ routing
>information (eg in ACPI tables) is screwed up. And so on.

With respect to the IRQ routing: If the routing was messed up, wouldn't
this mean that no IRQs would get through on that device? We are getting
some . . .

>However, I have not heard of any generic problems with external PCI
>bus masters and the ICH4.

. . . thanks for the feedback.

Regards,
Kathy

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