Article ID: 141497 - View products that this article applies to.
This article was previously published under Q141497
This article describes how to use Device Manager to check the status of a resource (such as an IRQ line, DMA channel, memory address range, or I/O address range).
You may need to check the status of a resource when you are installing a new device in your computer, or when you suspect that a resource conflict is causing a device not to function.
To check the status of a resource, follow these steps:
DefinitionsAn IRQ (interrupt request) is a signal generated by a component in the computer or a device installed in the computer indicating that the component or device needs processor time. The number associated with an IRQ indicates the interrupt request line that the component or device uses to communicate with the processor.
DMA (direct memory access) is a technique that some components and devices use to transfer data directly to and from memory without passing through the processor. The number associated with DMA indicates the direct memory access channel that the component or device uses to transfer data to and from memory.
A memory address range is a range in memory that a component or device is using to store data. An I/O address range is a special range in memory that the computer uses to communicate with a component or device.
For additional information about troubleshooting device conflicts with Device Manager, please see the following article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/133240/EN-US/ )Troubleshooting Device Conflicts with Device Manager
Article ID: 141497 - Last Review: November 15, 2006 - Revision: 1.1