My driver crashes for following code: deviceExtension->StackDeviceObject = IoAttachDeviceToDeviceStack(DeviceObject, PhysicalDeviceObject); StackSize = deviceExtension->StackDeviceObject->StackSize...

If your virtual driver is exposed as a serial port, you will need manually install a modem (through telephon.cpl) on the virtual com port. Good luck! -Brad -- This posting is provided "AS IS" with...

I doubt TCP/IP won't work *locally* if no cable is plugged in to the network card(s), i.e. "localhost" (127.0.0.1) should always be available. Thus, the following command should always work: ping...

Hi, I have created a test print driver. I am printing Excel documents from a VB application and it works for a small number of worksheets. When I try to print a large number of worksheets, we find...

Raj wrote: Because they may change the way it works someday. Don't confuse KeInitializeTimer and KeSetTimer -- they do different things. Yes. DPC routines are always called at DISPATCH_LEVEL.

I wrote a USB driver under Windows 2000. I retrieve data from a interrupt pipe. The interval defined in my device is 1ms. The datarate from my device is 384kbps. However, I always loss data on PC. If...

Hi All, I.have a few questions about the Microsoft video mirror driver sample (running on a WIN2000 machine): 1) It seems that the mirror driver uses a lot of kernel processing time aspecially...

Hello, I am developing a NDIS MUx Intermediate Driver for Windows Xp/Windows Server 2003. I had use the sample code of NDIS Mux Intermediate Driver from Microsoft DDK 2003. The performance of my IM...

You better don't initialize a timer already set, do you? This means you better initialize your synchronization objects in advance, rather than before every SetTimer call. "Raj"...

This question is related to audio device mappings: I have a piece of hardware with a hub and four audio codecs, one on each port. WIndows detects them fine and four 'USB Audio Device' entries show...

My be this is out of topic. I couldnt install the security patches on my Windows XP/2000 checked OS's. The windows update fails. Downloading the patch and installing them directly dint work either,...

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I'm calling NdisScheduleWorkItem in a DPC routine to schedule some low priority work but sometimes it appears that my WorkItem is not schedule. Each WorkItem is associated with one PC card. Some...

I have a driver that I'm installing using a program that is called from InstallShield. Nothing too unusual there. It's got a coinstaller to copy language-specific help files and setup OEM-specific...

Hello, I create a symbolic like as: X:\ for my FILE_DEVICE_DISK device object. In Win2k, the new drive appears, but in XP that drive does not appear (although IoCreateSymlink succeeds), why ? Do...

Is there any difference between PKDPC and PRKDPC. In KeInitializeDpc we pass PRKDPC and in KeSetTimer we pass PKDPC. I am passing same object that was initialised in KeInitialize to the...

Hello I have little problem. I write virtual com port driver and I want read from register information about free com port number (COM3 or COM4 ...). When I use IoOpenDeviceRegistryKey in DriverEntry...

Hi, Does somebody know how I can add additional resolutions to the Oemuni Printerdriver (Win2000 DDK)? I need extra resolutions like 1200DPI x 1200DPI, 150DPI x 150DPI, etc How can I easily do...

Please excuse my former ignorance and shoot me if the following is not correct. My 32-bit CPU / O.S. (Xeon / Windows 2000) cannot perform 64-bit transfers accross the PCI bus by memory mapping...

How can I install a software only device driver?