Arbitration and Translation, Part 3

This post is the third in a series.  You can see the others here, Part 1 and Part 2. What is an Arbiter? In the NT PnP subsystem, an arbiter is an interface that a bus driver can expose which is able to intelligently assign PnP resources of a single specific type (memory, I/O ports,…

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Translation and Windows

  Arbitration and Translation, Part 2   Building on yesterday’s post, I’m going to try to explain how Windows copes with machines with strange resource translations.  I’ll use two examples in this post, one related to I/O port resources and one related to interrupts.   Just for convenience, I’ll duplicate the diagram from my last…

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Arbitration and Translation, Part 1

A while back Jake Oshins answered a question on NTDEV about bus arbitration and afterwards I asked him if he could write a couple of posts about it for the blog. Here is part 1.   History Lesson   In the history of computing, most machines weren’t PCs.  PCs, and the related “industry standard” server…

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WDK v7.1 is now available

A refresh of the WDK is now available on connect. You can download the v7.1 WDK following the directions on WHDC.  The change list for the WDK can be found here, I copying it here as well: WDK Version 7.1.0 Changes and Issues This section contains information about the changes to the WDK for the…

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What is IRQL?

Jake Oshins wanted to write about IRQLs and I am gladly letting him use my blog as a platform.  Here it is… I’ve found myself explaining IRQL a lot lately, sometimes to people who want to know because they’re trying to write Windows drivers and sometimes to people who are accustomed to Linux or some…

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