Message Signaled Interrupts.

NTDEV
1

Hi All,

I have been reading Microsoft talking about supporting Message Signaled
Interrupts. Wondering which Windows OS version have the support in it.
Is MSI supported all the way back to Windows 2000 professional?

Thanks,
Shakeel.

2

Hi Shakeel,
This is a document about MSI.The MSI support will be there from
Longhorn.

Here is the link:
http://www.microsoft.com/whdc/system/bus/PCI/MSI.mspx

Thanks,
Ajitabh

-----Original Message-----
From: shakeel [mailto:xxxxx@yahoo.com]
Sent: Wednesday, July 07, 2004 3:43 PM
To: Windows System Software Devs Interest List
Subject: [ntdev] Message Signaled Interrupts.

Hi All,

I have been reading Microsoft talking about supporting Message Signaled
Interrupts. Wondering which Windows OS version have the support in it.
Is MSI supported all the way back to Windows 2000 professional?

Thanks,
Shakeel.

Questions? First check the Kernel Driver FAQ at
http://www.osronline.com/article.cfm?id=256

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3

Saxena, Ajitabh Prakash wrote:

Here is the link:
http://www.microsoft.com/whdc/system/bus/PCI/MSI.mspx

And a darn well-written paper it is, too :wink:

MSI support starts in Longhorn.

However, the MSI-capable interfaces (such as IoConnectInterruptEx) will
be supported the way back to Windows 2000, thus allowing you to have a
single binary that works on all platforms.

Of course, because there’s no MSI support prior to Windows Longhorn,
you’re device will always seem to support only line-based interrupts
when your driver runs on pre-Longhorn systems.

The paper makes this all very clear. I hope.

Peter
OSR

4

Thanks Peter and Ajitabh for your answers.

Shakeel.

“PeterGV” wrote in message news:xxxxx@ntdev…
> Saxena, Ajitabh Prakash wrote:
> >
> > Here is the link:
> > http://www.microsoft.com/whdc/system/bus/PCI/MSI.mspx
> >
>
> And a darn well-written paper it is, too :wink:
>
> MSI support starts in Longhorn.
>
> However, the MSI-capable interfaces (such as IoConnectInterruptEx) will
> be supported the way back to Windows 2000, thus allowing you to have a
> single binary that works on all platforms.
>
> Of course, because there’s no MSI support prior to Windows Longhorn,
> you’re device will always seem to support only line-based interrupts
> when your driver runs on pre-Longhorn systems.
>
> The paper makes this all very clear. I hope.
>
> Peter
> OSR
>