Hello, I am working on a kiosk applicationm (not a device driver) and I have noticed that sometimes the entire USB bus dies (as in all of the USB devices disappear). This has nothing to do with my...

As my good friend Vladimir warned me, I am posting again this question, which continues the discussion posted as "Ordering writes in Write-Combined Memory" of...

I understand, from the P4 software dev manuals from Intel, that when you specify your memory as being Write Combined, the processor will combine multiple writes in a store buffer and, when actually...

Dear ALL! Is it possible in driver to have a race conditions in IRP_MJ_CLOSE and IRP_MJ_DEVICE_CONTROL handlers? My system experiences very rare crashes during my device activity, but never...

Hi, I'm deveoping a driver using USBCAMD2 for an FX2 Cypress device. In USB 2.0 Isochronous High-Speed mode I transfer a stream about at 7.8 MB/s. This is correct if you set 1024 byte per Microframe...

The SD bus need transmit block one by one. I do not know what is the block size of each? and what different between SDTT_SINGLE_BLOCK and SDTT_MULTI_BLOCK? Thanks

The device path exerciser stops and show the application error when running.After the error msg , device path exerciser will be no any response and it can't restart the system for complented...

Dear Sirs. I have a USB mouse composite device, it contains two function interface. The mouse interface and transfer interface(appears as normal USB class). Would you please tell me that what kind...

Hi: I am developing the USB camera mini driver on OS XP sp2 , and using the USBCAMD DDK. I use the interrupt from interrupt pipe to inform our driver that hardware button has been touched. If one...

I am working for USB over IP project. Now I meet a serious problem: when my bus driver enumerate a USB printer, the PNP manager sends IRP to query device ID, resources, resources requirement, bus...

Just getting started with the DDK. Which compliers work? C++ Standard 6.0 C++ Pro 6.0 Visual Studio Pro 6.0 Visual studio.NET 2003 C++ Express 2005 BETA Visual Studio Pro 2005 BETA

originated in the java corner, i have some difficulties to adapt the programming style used in the platform sdk and the ddk. therefore i'd like to know what you think about the way i handled some...

Hi, Could anyone tell me how to determine if given IRP is completed? Here is my problem: I have a keyboard filter driver based on Ctrl2Cap from sysinternals. I need it to generate keystrokes. In...

I am running DRVfast (PREfast for drivers) on my IM driver, and see the following warnings: warning 8126: The AccessMode parameter to ObReferenceObject* should be IRP->RequestorMode. warning 309:...

When the WZC connects ad hoc I noticed it changed from add_wep in SP1 to add_key in SP2 There is one thing I don't understand. this is what I captured. (the bytes set with OID_802_11_ADD_KEY) 2D...

Dear ALL, Is there any way to update non-pnp driver within Windows XP system without rebooting computer? I am currently developing driver of "Imaging" class. I can see it in Device Manager under...

Hello Newsgroup! I am new to building drivers. My project is to develop an accounting print processor for PostScript print drivers. In my opinion it is the best way to account the job in the print...

Hi Here's the situation: There are several device interfaces registered on a PDO. The device stack is accessed by IoGetDeviceObjectPointer using links obtained from

I try to get signal strength and MAC's of all access points in user-mode. I try to make it without NDISUIO writing in pure C. I made a little app which uses WMI and Setup Api to find wireless...

Hi, I was trying to replace a system file( classpnp.sys) in windows/system32/drivers directory. But I am not able to , It gets replaced with the system file every time I replace it. I tried...