Device Drivers

General portio sample problem
Hi, I have a problem with the sample in the 7600.16385.0 WDK, I get Code39 error. What should i do? btw i would like to write a driver to our old ISA card. Thanks in advance. András ... 18 Feb 2010 16:15

Modifying ACL on already loaded device
I wondered if there was a way of changing/adding the ACL on already loaded device (eg COM1, LPT1, Bluetooth). I know that if i'm writing my own driver I can specify an ACL on my device via IoCreateDeviceIO, in my driver's .inf file or even via SetupDiSetDeviceRegistryProperty but, as I understand it, these only set... 11 Feb 2010 13:57

Do WIA scan without calling IWiaDevMgr->DeviceDlg()
I am trying to do a wia scan using the IWiaDevMgr, IWiaItem and IWiaDataTransfer Created the IWiaDevMgr as in the following code CComPtr<IWiaDevMgr> pWiaDevMgr hr = pWiaDevMgr.CoCreateInstance(CLSID_WiaDevMgr); then call the CreateDevice on that object with the correct device id hr=pWiaDevMgr->CreateDevice(s... 17 Feb 2010 06:40

memory mapping and WRITE_REGISTER_UCHAR
Thanks to help that I got from a previous post, I was able to get my driver rebuilt and going again. I am very much appreciative. Here is a tricky question that I may not fully grasp yet: My driver is for a PCI card. Hence the address space is 32 bits. The memory on my card is 16 bits. So there is some ma... 11 Feb 2010 18:30

obtain list of hardrive guid's
I just bought a new laptop with windows 7 home premium. first I loaded McAfee security. then I decreased the size of the hard drive by half in order to have 2. I made a clone of the original disk onto the 2nd partition for backup. with a plan to install all my stuff on the original with a backup of the virgin drive in... 10 Feb 2010 11:09

obtain list of hardrive guid's
I just bought a new laptop with windows 7 home premium. first I load McAfee security. then I decreased the size of the hard drive order may be switched. I made a close of the original disk for backup. with a plan to install all my stuff one the original with a backup of the virgin drive in case of emergency. all went... 10 Feb 2010 10:01

install more than one device with same driver
we use a simplified version of DevCon for installing a driver and it works fine, but now we have multiple instances of the device, all controlled b y the same driver (this is a serial port emulator). Say I need to install three instances. When I run install.exe once for each instance, every time it finds an alr... 16 Feb 2010 07:31

Allocate isoch resource failed for 1394b driver on windows 7 x64
I developed a firewire camera (amd64 bit) driver for my image device, the driver can run with SONY industrial camera (IIDC 1.30) on FireWire S800, but failed on my image device on windows 7 x64, the x86 version of this driver works well on x86 32bit platform like winxp or win7 with my device. The error code re... 1 Mar 2010 10:17

cfgmgr32.dll is using obsolete deprecated CM_Detect_Resource_Confl
Hi, In my application (VC++ 2008 SP1 & WDK 6001.18000) I am using "Get_Next_Res_Des" to get device information. But the UMDH (User-Mode heap dump) call stack shows: CFGMGR32!CM_Detect_Resource_Conflict+00000065 CFGMGR32!CM_Get_Next_Res_Des_Ex+00000278 CFGMGR32!CM_Get_Next_Res_Des+00000017 ................... 10 Feb 2010 01:15

BSOD memory.dmp deleted by Windows 7
Hello, I have my Windows 7 system configured to generate Kernel memory dump files. However, whenever a BSOD occurs, the file is missing upon the next reboot. In the event log, I see the following message: The dump file at location: C:\Windows\MEMORY.DMP was deleted because the disk volume had less than 25 GB... 9 Feb 2010 16:18