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Article ID: 178660 - Last Review: March 21, 2005 - Revision: 3.3
SAMPLE: Dumppci.exe Shows How To Dynamically Load/Unload Driver
This article was previously published under Q178660
Dumppci.exe is a sample Win32 application and kernel-mode drive that
demonstrates how to dynamically load or unload a driver, scan all the PCI
devices in the system, and display the PCI configuration space for each
device.
The following file is available for download from the Microsoft Download Center:
Dumppci.exe
(http://download.microsoft.com/download/winddk/demo50/1/nt4/en-us/dumppci.exe)
For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591Â
(http://kbalertz.com/Feedback.aspx?kbNumber=119591/EN-US/
)
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Dumppci.exe and Pcidumpr.sys
This is a sample driver that demonstrates the following:
- How to dynamically load or unload a driver using the Service Control
Manager APIs. These APIs allow you to load a driver without having
to modify the registry and reboot the system.
- How to scan the PCI slots and locate PCI devices.
- How to send data from a kernel-mode driver to a Win32 console mode
application.
To run the sample:
- Build the driver and the Win32 application. See the DDK documentation
for details on creating drivers and Win32 applications from the DDK
Build Environment.
- Insure that the driver (Pcidumpr.sys) and the Win32 application
(Dumppci.exe) are in the same directory.
- From a command prompt, type "dumppci" to see the options supported.
Currently, you can display the PCI configuration data in either a
formatted ("-f" option) or raw ("-r" option) manner.
When the program runs, the driver is automatically loaded and started. The
Win32 application sends custom IOCTLs to the driver. The driver then scans
all the PCI slots in the system and locates PCI devices. For each PCI
device, the driver retrieves the PCI configuration space information and
places it in the Win32 application's buffer.
Note This sample does not work across a network. The driver and Win32
application must reside on the local computer.
APPLIES TO
- Microsoft Win32 Device Driver Kit for Windows NT 4.0
- Microsoft Win32 Device Driver Kit for Windows NT 3.51
| kbdownload kbfile kbsample KB178660 |
Retired KB Content DisclaimerThis article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.
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