Dependencies inf directive

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  - 1
    - maximum interrupts/second I could not find any up to date information using Google Groups on this question which is quite simply is there a guideline for the maximum number of interrupts a second that can be processed by a Windows 2000/XP system running on a CPU such as an AMD XP-1800+ (approx 1.5 GHz)? The problem arises because I need to deal with a CBR ATM stream running at about 7.5 Mbps and the hardware generates an interrupt for each ATM cell. The math works out to about 20,000 interrupts per second in each direction or 40,000 sustained interrupts/second if I attempt full duplex communications. Is 40,000 achievable? 20,000? Assume the machine will be doing very little else while running this application. Tag: Dependencies inf directive Tag: 35946
  - 2
    - TDI Transport Sample Does anybody know where to get W2K/XP TDI Transport sample? I have an old sample from the NT DDK (i.e. src\network\tdi), but it appears that the W2K and later DDKs don't have one. Thx ((&-< Tag: Dependencies inf directive Tag: 35945
  - 3
    - How to access Expansion ROM space I have a PCI card which has a commercially available Intel PCI chip on it. The HW designer added four extra functions which are only accessible through the Expansion ROM interface (to save $ and space without a bridge chip) and which generates interrupts. This is a single function card, no bridge chip, and the PCI chip currently has an unsigned driver developed by Intel, although I expect it will be signed someday. We need to support XP and 2000 only. And yes SW needs to fix this issue as the HW will not be re-designed. Any ideas on how to develop and release our drivers to get to Expansion ROM or comments on the following ideas? 1. I must allocate PCI memory and assign it to the expansion ROM to work in all systems. I can simply enable the expansion ROM on my test PC for initial tests. 2. I did a test driver on one functionality and simply installed my driver on the device (without the regular one) and then forced accesses to Expansion ROM space and it works but is not releasable. 3. I tried a "virtual" driver and could get PCI memory but could not attach to the interrupt. Not sure if it is illegal to have interrupts in virtual driver or I was supplying bad parameters. 4. I though about installing a multifunction inf to break out PCI function and 4 exp ROM functions and modifying the PCI chip inf to look at name not PCI ID. But what happens when becomes signed driver? Thanks, Stefan Tag: Dependencies inf directive Tag: 35944
  - 4
    - Windows 98 device setup application I have a 1394 WDM driver for Windows 98 SE and I need to write a device setup application to setup the driver. As somebody mentioned before in this list, the SetupCopyOEMInf function won't do the work in Windows 98. What's more, I can't just go into the registry to setup everything, because I don't know the device registry entry before the device is actually plugged into the system (PnP driver). Is there any way or any API in Windows 98 that works like SetupCopyOEMInf in 2000/XP? I also tried to manually copy everything myself. I copy the INF file to %windir%\inf\Other directory, and copy my 1394 driver to %windir%\system32\drivers directory. When I first plug in a device, the system install the driver for my device automatically!!! I also noticed that every file in windows\inf\Other directory has the same name pattern: Provider name followed by the original name of INF file. So I guess there must be some way to let Windows 98 copy the driver file and INF to the right directories. Any one has any idea of what this API is? Thanks and regards, Zhen Tag: Dependencies inf directive Tag: 35943
  - 5
    - PageAliases Some time ago I speculated about the purpose of a rather mysterious inf file entry called PageAliases and promised I would report when I verified my speculations. What I have shown is this. Given a rather straight-forward inf file section: [MyDevice.NT.Interfaces] AddInterface=%KSCATEGORY_CAPTURE%,GLOBAL,MyDevice.Interface [MyDevice.Interface] AddReg=MyDevice.Intf.AddReg [MyDevice.Intf.AddReg] HKR,,CLSID,,%ProxyVCap.CLSID% HKR,,FriendlyName,,%MyDevice.DeviceDesc% You can add a PageAliases entry like this: [MyDevice.Intf.AddReg] HKR,,CLSID,,%ProxyVCap.CLSID% HKR,,FriendlyName,,%USB\VID_05D0&PID_FFF4.DeviceDesc% HKR,PageAliases,"{71F96464-78F3-11d0-A18C-00A0C9118956}",1, \ 21,E8,C2,3D, 13,47, d2,11, 0xba, 0x41, \ 0x0, 0xa0, 0xc9, 0xd, 0x2b, 0x5 The first GUID is the GUID for the property page that you want to alias. In this case, 71F96464-78F3-11d0-A18C-00A0C9118956, we are replacing the standard Video Proc Amp page. The remainder of the entry is the REG_BINARY expression for the GUID of the replacement page. This is the same format as used by the IID key in the more commonly seen HKLM,System\CurrentControlSet\Control\MediaInterfaces section of the registry. Of course, the replacement GUID must be registered as a COM server: HKCR,CLSID\%MyProcAmpPPage.CLSID%,,,%MyProcAmpPPage.FriendlyName% HKCR,CLSID\%MyProcAmpPPage.CLSID%\InprocServer32,,,%MyPPLib% HKCR,CLSID\%MyProcAmpPPage.CLSID%\InprocServer32,ThreadingModel,,Both And just to be clear about the format of the second PageAliases GUID: [Strings] MyProcAmpPPage.CLSID= {3DC2E821-4713-11d2-BA41-00A0C90D2B05} These inf file settings will globally replace the original property page with the replacement page. Based on my original speculation, this replacement should be system wide. The behaviour has been confirmed with graphedit and amcap so I assume it is in fact system wide. Furthermore, it is confined to only your device. Other devices using the original property page are not overridden. Moreover, if you flub the construction of the replacement property page in your CreateInstance function (for example *phr=E_NOTIMPL; return NULL;), the page does not show up at all. This may be a bit hacky, perhaps depending on the implementation of the callers (although perhaps not), but I think it would allow you to do something like merge the controls of a standard page into a seperate page that you have constructed - for whatever reason you might want to do such a thing. Again, this works under both amcap and graphedit. While this facility is ripe for abuse, it does seem to be something that might be useful on certain occasions. Regards, Tom Tag: Dependencies inf directive Tag: 35942
  - 6
    - Accessing MP_Adapter object for IRP routine Hi, I am using the DDK sample (Netvmini) to write a virtual network driver. I have a question regarding to acess the MP_Adapter object for the IRP routines (eg. IRP_MJ_DEVICE_CONTROL). The routines are trying to insert and remove packets from the adapter's working queue. However, the adapter object is not an input object when the IRP routines are called. One apporach is to make the adapter object global; therefore, the IRP routines can access the adapter object and the queue. I am wondering if there is a better method...Is there any NDisXxx function existing to help this situation? Thanks, Billy Ng. Tag: Dependencies inf directive Tag: 35938
  - 7
    - USB host-to-host communications. Is it possible to have two PCs talking together over USB? How is the connector ( same class connector ) handled. Doesn't the class A, class B connector differentiate between host and device? Any input is welcome. Thanks in advance, Demir Ateser Tag: Dependencies inf directive Tag: 35934
  - 8
    - Index of NIC I'm using an IP filter extension which passes in the RecvInterfaceIndex (defined to be the Index of the Network Interface Card, NIC). I'm trying to find a way that I can know which card has which index. I thought the IP helper function GetAdaptersInfo would give me this but the indices are not the same. I'm seeing an index of 1 on the recvInterfaceIndex and 65540 on the getAdaptersInfo. Tag: Dependencies inf directive Tag: 35932
  - 9
    - How to stop Mirror Driver The sample provided with the SDK shows how to start up a mirror driver, but it does not cover how to stop it. How would one go about disabling the mirror driver _without_rebootting. -- Brian V. Minier Interactive Imaging Systems, Inc www.iisvr.com Tag: Dependencies inf directive Tag: 35931
  - 10
    - Regarding FastFat Hi all, I'm still trying to understand how the filesytem is working under XP. As a learning exercise I've written a small driver which locates, and hooks into the \FileSystem\FastFat driver - all I'm doing is replacing the function pointer in the FastFat dispatch-table with a pointer to a function in my driver, which looks like this: NTSTATUS NewDispatchRead(PDEVICE_OBJECT DeviceObj, PIRP Irp) { NTSTATUS status; PMDL Mdl = Irp->MdlAddress; PVOID Buffer; /* step1: lock down IRP here and access memory */ if(Mdl != 0) Buffer = MmGetMdlForNonPagedPool(Mdl, ...); status = OldDispatchRead(DeviceObj, Irp); /* step2: lock down IRP and access memory */ if(Mdl != 0) Buffer = MmGetMdlForNonPagedPool(Mdl, ...); return status; } OK, I don't want to get into a debate as to whether this is good practise or not (I know it isn't) - this is for experimental purposes only. So what I'm observing is the following: the "original" dispatch routine for FastFat IRP_MJ_READ generally returns STATUS_SUCCESS rather than STATUS_PENDING. This presumably means that the original handler has (during it's processing) set up it's own completion routine, called whatever the next driver might be with the IRP, and then waited for the completion routine to execute (using an event and KeWaitForxxx) before finally returning "yes, the read is complete" Does this diagnositic sound correct? So my conclusion from this is that the buffer described by Irp->MdlAddress should contain valid data when the OldDispatchRead function returns STATUS_SUCCESS, right? But....if you look at the code I posted, I have two steps (1+2). At step1, I can see the contents of the buffer no problems (using ProbeForRead etc). But this is not useful because the buffer hasn't been filled up by the read operation yet. What I really want to do is access the buffer contents at step2 (after the OldDispatchRead) but the memory range the Mdl references seems to be invalid at this point - so my second conclusion is that the normal FastFat IRP_MJ_READ function completes the read operation and then frees the memory referenced by the Mdl in the original IRP. Does this sound correct? So my next goal is to somehow access the buffer the Mdl references *after* the original dispatch routine has returned. My current "hack" is to do this at step 1: Mdl = IoAllocateMdl(IoCurrentStack->UserBuffer); MmBuildMdlForNonPagedPool(Mdl); MmMapLockedPages(Mdl, KernelMode); /* call the original dispatch routine */ and then this at step 2: PVOID Buffer = MmGetSystemAddressForMdlSafe(Mdl, LowPriority); MmUnmapLockedPages(Buffer, Mdl); IoFreeMdl(Mdl); I can now access the Buffer and see the results of the read operation!!! But I'm pretty wary of why this is even possible, or even legal, as I'm assuming that the original memory range has been freed, and the Mdl I build myself points to "dirty" pages that by chance contain valid data . So, could someone please explain what the effect is of locking down the buffer in this manner, why it is unsafe, any better methods to achieve what I want...? Note: FileSystem filter driver is too much for my needs, this is just a quick one-off experiment, but I'd like to know what's really happening here. Cheers, James Tag: Dependencies inf directive Tag: 35928
  - 11
    - Accessing flash pcmcia under W2K/XP Hi, I am trying to develop a driver that runs under W2K and XP, allowing the bitwise reading/writing of a Flash/ATA pcmcia card by absolute memory location. I have access to a previous driver that worked under NT by accessing the APSoft CardWare API, which uses the Card Services protocol, but W2K and XP don't support that protocol so I have to start from scratch. Can anybody point me towards any resources that will help me? My project can afford to buy driver software such as CardWare, but I'd need the SDK for code examples. Alternatively I could (I assume) use the OS's native support, but I don't know how to even start! Thanks Jim Tag: Dependencies inf directive Tag: 35924
  - 12
    - PDEV_BROADCAST_HDR is NULL I register for device notification by specifying DEVICE_NOTIFY_WINDOW_HANDLE and the ClassGuid. #1 is the ClassGuid from the inf file the correct guid to register for? #2 in my handler I have this code under WM_DEVICECHANGE PDEV_BROADCAST_HDR pHdr = reinterpret_cast<PDEV_BROADCAST_HDR>(lParam); if( pHdr && pHdr->dbch_devicetype == DBT_DEVTYP_DEVICEINTERFACE ) pHdr is always NULL So I am a litle confused as to what I can do. Without Phdr I really cannot even say it was the device I was looking for or if it was removed or arrived. Thanks for any suggestions. -- Mike Pulice http://www.puliceworx.com Tag: Dependencies inf directive Tag: 35917
  - 13
    - wpa-psk Hello, I have googled this but havn't found any answers just questions. I want to get wpa-psk with tkip up and running. at the moment I guess I am not authenticated because I don't get any ip address from the dhcp. I use hmac_sha1 algorithm to create the key material (is this the right one to use?)http://www.deadhat.com/wlancrypto/ http://www.deadhat.com/wlancrypto/password_hashing.c I don't get any error when I make the ndis requests. Since I havn't set any KeyIndex on the access point should that be left out in the NDIS_802_11_KEY? when I set NDIS_802_11_WEP_STATUS should I use Ndis802_11Encryption2Enabled or Ndis802_11Encryption2KeyAbsent? (if I try to use KeyAbsent I get NDIS_STATUS_NOT_ACCEPTED back from the request) Since I can't think of anything that can be wrong except the key material (and keyindex - wep_status), is there somehow I can verify that my key has the correct format? Since there isn't that many new oids from using wep I assume I shouldn't be that difficult to get it working. I have set OID_802_11_AUTHENTICATION_MODE to Ndis802_11AuthModeWPAPSK the OID_802_11_ENCRYPTION_STATUS as I wrote above not sure which one to use but it is fairly easy to test a few values to see if it works so it gets down to OID_802_11_ADD_KEY and with this one I can only think of the key material. any ideas? thanks /Niklas Tag: Dependencies inf directive Tag: 35904
  - 14
    - USB MOUSE- WDM hello everyone, i'm told o start with "Usb 2.0 drivers" under "wdm architecture"(win 2k). The preferred device was "Usb Mouse". Now, i'm in a dilemma where to start with. Do i have to know about Human input devices(hid) and exactly where my usb mouse driver will fit in the wdm-hid-usb drivers. how to proceed. can anyone give me some guidance. just reading ddk and wdm didnt help me, i'm not getting a starting point and where to start with. and also can anyone suggest me a good USB book which will explain the concepts, by any author Thanks in advance, hope i get the answers to my querries -- Prashanth R M -------------------------------------------------------- Global Edge Software Ltd. No. 218, JP Royale, Sampige road, Bangalore- 560003 Voice: 3467944 (ext) 475, Mobile : 98861-45641 Fax:3467948 Tag: Dependencies inf directive Tag: 35903
  - 15
    - usbser.sys changes between 2k and XP? Hi, We use usbser.sys to provide a basic virtual serial port for communication with a number of different devices over USB. This has always worked well, but recently we have had reports of intermittent BSOD stop errors under windows XP when transferring data from a device to the PC. This can be reproduced regularly. (see end of post) The BSOD has not been observed on any other platform, and if we replace usbser.sys on XP machines with the 2k version, then the BSOD is not seen. We have observed that our data rate under XP is higher than 2k, and there has obviously been a rearchitecture of the USB stack in XP. Does anybody know the nature of the changes made to usbser.sys between 2k and XP that might result in stop errors? Also, our software that communicates with serial ports is multithreaded - is usbser.sys thread-safe? Thanks for any ideas, Gavin. ///////////////////////////////// *************************************************************************= ****** * =20 *=20 * Bugcheck Analysis =20 *=20 * =20 *=20 *************************************************************************= ****** Use !analyze -v to get detailed debugging information.=20 BugCheck 1000008E, {c0000005, fa1f69fd, f923fad0, 0}=20 *** WARNING: Unable to verify timestamp for usbser.sys=20 *** WARNING: Unable to verify timestamp for Modem.SYS=20 Probably caused by : usbser.sys ( usbser!WaitOnMask+13d )=20 Followup: MachineOwner=20 ---------=20 kd> !analyze -v C:\XP_crashData\Mini110503-01.dmp=20 Unknown option '-0'=20 *************************************************************************= ****** * =20 *=20 * Bugcheck Analysis =20 *=20 * =20 *=20 *************************************************************************= ****** KERNEL_MODE_EXCEPTION_NOT_HANDLED_M (1000008e)=20 This is a very common bugcheck. Usually the exception address pinpoints=20 the driver/function that caused the problem. Always note this address=20 as well as the link date of the driver/image that contains this address.=20 Some common problems are exception code 0x80000003. This means a hard=20 coded breakpoint or assertion was hit, but this system was booted=20 /NODEBUG. This is not supposed to happen as developers should never have=20 hardcoded breakpoints in retail code, but ...=20 If this happens, make sure a debugger gets connected, and the=20 system is booted /DEBUG. This will let us see why this breakpoint is=20 happening.=20 An exception code of 0x80000002 (STATUS_DATATYPE_MISALIGNMENT) indicates=20 that an unaligned data reference was encountered. The trap frame will=20 supply additional information.=20 Arguments:=20 Arg1: c0000005, The exception code that was not handled=20 Arg2: fa1f69fd, The address that the exception occurred at=20 Arg3: f923fad0, Trap Frame=20 Arg4: 00000000=20 Debugging Details:=20 ------------------=20 EXCEPTION_CODE: (NTSTATUS) 0xc0000005 - The instruction at "0x%08lx" referenced memory at "0x%08lx". The memory could not be "%s".=20 FAULTING_IP:=20 usbser!WaitOnMask+13d=20 fa1f69fd ?? ???=20 TRAP_FRAME: f923fad0 -- (.trap fffffffff923fad0)=20 Unable to read trap frame at f923fad0=20 DEFAULT_BUCKET_ID: DRIVER_FAULT=20 BUGCHECK_STR: 0x8E=20 LAST_CONTROL_TRANSFER: from fa1f61da to fa1f69fd=20 STACK_TEXT: =20 f923fb5c fa1f61da 02295c08 811be1f0 81295d00 usbser!WaitOnMask+0x13d=20 f923fb88 804eca36 811be040 81295c08 8120a3c0 usbser!UsbSer_Dispatch+0x25a=20 f923fb98 fa17808c 8120a40c 81295d08 8120a3c0 nt!IopfCallDriver+0x31=20 f923fbc0 fa178cb0 8120a3c0 8120a308 001b0048 Modem!UniMaskStarter+0x23a=20 f923fbd8 fa1790e3 8120a3c0 8120a3c8 81295c08 Modem!UniStartOrQueue+0x5c=20 f923fc00 fa17773c 8120a308 81295c08 8116b958 Modem!UniSniffOwnerSettings+0xe7=20 f923fc34 804eca36 8120a308 81295c08 806c7fe0 Modem!UniIoControl+0x5f8=20 f923fc44 8058b076 81295d08 ffa8c028 81295c08 nt!IopfCallDriver+0x31=20 f923fc58 8058bc62 8120a308 81295c08 ffa8c028 nt!IopSynchronousServiceTail+0x5e=20 f923fd00 805987ec 000002ec 000002e4 00000000 nt!IopXxxControlFile+0x5ec=20 f923fd34 804da140 000002ec 000002e4 00000000 nt!NtDeviceIoControlFile+0x28=20 f923fd34 7ffe0304 000002ec 000002e4 00000000 nt!KiSystemService+0xc4=20 0249fa70 00000000 00000000 00000000 00000000 SharedUserData!SystemCallStub+0x4=20 FOLLOWUP_IP:=20 usbser!WaitOnMask+13d=20 fa1f69fd ?? ???=20 FOLLOWUP_NAME: MachineOwner=20 SYMBOL_NAME: usbser!WaitOnMask+13d=20 MODULE_NAME: usbser=20 IMAGE_NAME: usbser.sys=20 DEBUG_FLR_IMAGE_TIMESTAMP: 3b7d8690=20 STACK_COMMAND: .trap fffffffff923fad0 ; kb=20 BUCKET_ID: 0x8E_usbser!WaitOnMask+13d=20 Tag: Dependencies inf directive Tag: 35901
  - 16
    - Windows Update Driver Publishing - really no coinstaller allowed? Hi there, I work for a graphics card manufacturer and we'd really like to use Windows Update to distribute driver upgrades. However, our driver ships with a co-installer dll that does certain vital bits of PnP arcana that are necessary on Win2K. According to the document at http://www.microsoft.com/whdc/hwdev/driver/WinUp.mspx, "Drivers must install core functionality from the INF file. (snip). There can be no setup utilities for files that provide core device functionality." Does this mean we're not allowed to have a co-installer? Many thanks, Reuben Harris Tag: Dependencies inf directive Tag: 35898
  - 17
    - keyboard filter driver in Win Me, I need help! Hello! I made a keyboard upper filter driver (WDM) for Win XP several months ago. It works without any problems. And now I need to redevelop for Win Me. As I read in documentation, WDM drivers are supported also by 98/Me. But I didn't understand can I use in 98/Me such technology as in XP (compiling WDM driver for Win Me, adding upperfilters value in keyboard key). So I have 3 questions: Is it possible to attach WDM filter driver to VxD drivers in Win98/ME? And how? How can I make filtration of input data from keyboard/mouse? Thanks! Tag: Dependencies inf directive Tag: 35897
  - 18
    - Can someone help?! PCMCIA LogConfigOverride Hi, I have a PCMCIA which I need to have an I/O Window mapped to it and I require the PCMCIA bus controller to use the wait signal to access the i/o registers on my card. After searching high and low for the past few days, I realised that I can specify logConfigOverride section in the .inf file. The thing is there are so many things to it that I think I am getting everything wrong and my driver installation keeps crashing my PC. Here is what I have: [card.override0] ConfigPriority = NORMAL IOConfig = 128@fd00-fdff IRQConfig = 9 PCCardConfig = 1:0(W XI1) First of all I will like to know what is the address range specified in the IOConfig directive. I took the address range above from the resource properties of my PCMCIA card bus controller (in Device Manager). Then for the PCCardConfig, what is the configuration index? Is it the mask of the configuration option register of PCMCIA card? Finally, if I use the method above, does that mean that my driver installation will only work on my pc? Tag: Dependencies inf directive Tag: 35896
  - 19
    - questions about USB bandwidth consumption under Windows2000 professional Hi, I have some questions about USB device bandwidth consumption under platform of Windows2000 Professional. 1/ How does OS calculate each USB device bandwidth consumption? 2/ is there any relations between the bandwidth consumption and the driver of USB device ? or the bandwidth consumption is only determined by USB device? Any advices are appreciated! Tag: Dependencies inf directive Tag: 35891
  - 20
    - How to prevent USB surprise removal dialog box on Windows ME/2000? I would write a program to trigger the usb device to replug in. However, USB surprise removal dialog box always pops up. Is it possible to prevent this dialog box from the user mode program? Best Regards Jackal Huang Tag: Dependencies inf directive Tag: 35890
  - 21
    - why PassThru couldn't pass ChkINF test? When I tested PassThru, a sample IM driver in Windows 2003 DDK,with HCT 11.2 ChkINF, I found the following error "Line 33: ERROR: (DE22.19.4011) The AddService ServiceName parameter must match the NDI\Service entry in the Registry. " Can't the sample driver supplied by Microsoft pass the HCT test? Tag: Dependencies inf directive Tag: 35882
  - 22
    - Trouble loading WIA minidriver DLL under Windows 2000 I have a problem related to a WIA minidriver. I'm not sure which newsgroup is the correct one for this; let me know if there is a more appropriate group. I've created a WIA scanner minidriver that loads and works fine on Windows XP. I also intend for this minidriver DLL to provide STI functionality in Windows 2000 and Windows 98. My problem is that this WIA/STI DLL is not getting loaded under Windows 2000 for some reason. The STI_Trace.log file contains only the following error line: e STISVC [stisvc.exe::0x65c] Could not open device ({6BDD1FC6-810F-11D0-BEC7-08002BE2092F}\0001) . Received from STI: hResult=(80040154). Object not maintained Win2K does not like my DLL for some reason. My entry point function never gets called. However, under Windows XP and Windows 98ME my DLL does get loaded. These are the only three Windows versions I've tried so far. I do have two other working minidrivers I can use as references. One, of course, is the DDK WIA sample scanner minidriver. The other is an existing scanner product that currently works under Win2K, although its STI DLL was not built by me. I believe that my INF file is correct and the registry entries all look good to me. Anyway, to rule out those possibilities, I decided to install the other working scanner product and then rename and substitute my own WIA DLL in place of the other DLL. When I did this, my DLL was still not loaded. But when I substituted the WIA sample scanner DLL, that DLL is loaded ok---its entry point gets called. It's only my DLL that will not get loaded. So there is apparently no problem with the registry, and the DLL can be found. It just won't get loaded and get its entry point called for some reason. I then compared my DLL with the WIA sample minidriver to see what could be different. I built both using the build utility and the Windows XP SP1 DDK, build 2600.1106. I initially had a different entry point than the sample scanner. I was using _DllMainCRTStartup because my DLL uses the C runtime library---in fact, it uses STL as well. So normally I see my DllMain() function get called by _DllMainCRTStartup . But to make sure this wasn't the problem, I made my entry point to be "DllEntryPoint" to match the WIA sample code (remembering to specify DLLENTRY=DllEntryPoint in the sources file of course). But this did not help. I checked the exports (using DUMPBIN) to make sure both DLLs have the same exports. The only difference is the DliHook export in the sample minidriver, but that should not matter. I then compared the "sources" files. Mine is almost the same as the sample minidriver's. There are only two differences. Since I'm using STL, I need to set USE_STL=1 and USE_NATIVE_EH=1. Other than that they look the same. So why does my DLL not get loaded under Win2K?? It should not be a problem with a GUID---the DLL entry point does not even get called. So Windows doesn't even know anything about the GUID yet. The only thing I can imagine is that my entry point looks different in some way, maybe of because the way it was compiled. But I cannot see any significant difference between how my DLL and the sample minidriver are built. Tag: Dependencies inf directive Tag: 35880
  - 23
    - Capturing Unicode string in DrvTextOut Hi, I am writing a virtual printer driver for WinXP. In DrvTextOut(), I need to capture and record the Unicode text string to be printed. Sometimes, this string is contained in STROBJ->pwszOrg. However, when STROBJ->flAccel contains SO_GLYPHINDEX_TEXTOUT, "pwszOrg points to an array of glyph indexes, rather than a Unicode array." As hard as I tried, I could not figure out how to convert this array of glyph indexes back into Unicode characters. Am I missing something here? Please help! Regards. Tag: Dependencies inf directive Tag: 35878
  - 24
    - a keybaord/mousr filter driver Hi, After reviewing some website (http://www.sysinternal.com) I programmed a keyboard/mouse filter driver. But there is something strange. I have a global variable to control whether to ignore keyboard scan code: if (ignore) { for (i=0; i<numOfKey; i++) KeyData[i].makecode=0; } I initialized the variable "ignore=0" in DriverEntry but once I rebooted my PC, the driver starts working and my keyboard does not have any respond. It seems that the variable ignore is non-zero even I initialized it with zero!! Can anoyone help? Tag: Dependencies inf directive Tag: 35875
  - 25
    - Parallel and/or serial port What are the requirments for programming using these ports ie. picking data sending data etc. My programming language is C#.NET or VB.NET Tag: Dependencies inf directive Tag: 35874
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  - 1
    - compilation error: ConvertStringSecurityDescriptorToSecurityDescriptor I am comliling user-mode dll from DDK build window (DDK version 3790). After I added security attributes code, I get compilation errors. I tried to include "sddl.h" file. I even tried to give include path for sddl.h. But still "Cannot open file sddl.h". I dont see sddl.h anywhere in c:\winddk. I found few DACL related definitions in wdm.h which is included in my workspace. How can I compile code with function "ConvertsecurityDescriptorToSecurityDescriptor" from DDK window. TARGETTYPE=DYNLINK DLLENTRY=DLLMain TARGETLIBS=$(SDK_LIB_PATH)\kernel32.lib \ $(SDK_LIB_PATH)\user32.lib \ $(SDK_LIB_PATH)\setupapi.lib \ $(SDK_LIB_PATH)\winmm.lib \ $(SDK_LIB_PATH)\advapi32.lib USE_MAPSYM=1 USE_MSVCRT=1 DEBUG_CRTS=1 UMTYPE=windows USER_C_FLAGS=/FAcs SYNCHRONIZE_BLOCK=1 INCLUDES=..\..\inc; \ ..\..\driver\common; \ c:\winddk\inc\wnet; \ c:\Program Files\Microsoft Platform SDK\Include; \ C:\Program Files\Microsoft SDK\Include SOURCES= 1394apidll.c \ 1394dllmain.c Tag: Dependencies inf directive Tag: 35865
  - 2
    - Parallel port direct i/o? Hi, is it possible to program the parallel port with system-supplied drivers? The DDK help says something like "raw access to ports", but it seems it is only for controlling printers. I need to program the port directly, i.e. setting and releasing port lines. At the moment, I'm using this "user-mode- security-hack-driver" and inb/outb calls. Do I have to do these inb/outb calls in kernel mode to have a reliable communication without scheduler- interrupts? I'm doing time-critical communication over the port but the scheduler switches in stages where it mustn't. Are kernel drivers "safe" from unwanted scheduler switches or would it also don't work? Thanks for your help. Thomas Tag: Dependencies inf directive Tag: 35858
  - 3
    - Talk to RAIDs (Promise/Adaptec)? Eliyas: How do you talk to a RAID miniport? Specifically to get the status of the drives masked by the driver. Samples/specs/IOCTL's/structures unique to RAIDS greatly appreciated. Regards, Jorg Tag: Dependencies inf directive Tag: 35856
  - 4
    - How to develop netmeeting like app I need to develop an application that takes control over tcp/ip on a client computer by specifing the client ip and port. This app will need to show the client desktop as he see it and have access to its machine. Any ideas? Ron Tag: Dependencies inf directive Tag: 35853
  - 5
    - USB performance I have been measuring the performance of a USB 2.0 device we have developed and a driver based on the code provided in the Walter Oney book and discovered some strange things. 1. On dual processor machines, the throughput is 50% greater when one of the processors is removed. This is under Windows 2000 SP4. 2. On some machines, the throughput is more than twice as much under USB1 than under USB2. This is generally with USB1 ports integrated on the motherboard and with a PCI USB2 card. This has only been observed under Windows 2000, never under XP. I wonder if anyone else has observed similar behaviour, or has ideas as to how I could investigate further. Regards, John Hall Tag: Dependencies inf directive Tag: 35850
  - 6
    - digital still camera sony dsc p1 I want to enum the stillimage-devices but the enumerator has the count 0. But I have a digitalcamera plugged in into the USB-Port and XP is showing a trayicon that can remove the device. A USB-Digitalcamera has to be a WIA-Device so why isn t it showing in the enumerator? Thanks for replies. Tag: Dependencies inf directive Tag: 35843
  - 7
    - BugCheck 0x7e Hi, My driver bugchecks after the AddDevice routine. The meaning is SYSTEM_THREAD_EXCEPTION_NOT_HANDLED with code STATUS_ACCESS_VIOLATION. I need help debugging this issue. *** Fatal System Error: 0x0000007e (0xC0000005,0x8051FCDD,0xFD5BB930,0xFD5BB630) Break instruction exception - code 80000003 (first chance) A fatal system error has occurred. Debugger entered on first try; Bugcheck callbacks have not been invoked. A fatal system error has occurred. Connected to Windows XP 2600 x86 compatible target, ptr64 FALSE Loading Kernel Symbols ........................................................... .......................... Loading unloaded module list .... Loading User Symbols *********************************************************** ******************** * * * Bugcheck Analysis * * * *********************************************************** ******************** Use !analyze -v to get detailed debugging information. BugCheck 7E, {c0000005, 8051fcdd, fd5bb930, fd5bb630} Probably caused by : ntoskrnl.exe ( nt! IovUtilMarkDeviceObject+9 ) Followup: MachineOwner --------- nt!RtlpBreakWithStatusInstruction: 805103fa cc int 3 kd> !analyze -v *********************************************************** ******************** * * * Bugcheck Analysis * * * *********************************************************** ******************** SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (7e) This is a very common bugcheck. Usually the exception address pinpoints the driver/function that caused the problem. Always note this address as well as the link date of the driver/image that contains this address. Arguments: Arg1: c0000005, The exception code that was not handled Arg2: 8051fcdd, The address that the exception occurred at Arg3: fd5bb930, Exception Record Address Arg4: fd5bb630, Context Record Address Debugging Details: ------------------ EXCEPTION_CODE: (NTSTATUS) 0xc0000005 - The instruction at "0x%08lx" referenced memory at "0x%08lx". The memory could not be "% s". FAULTING_IP: nt!IovUtilMarkDeviceObject+9 8051fcdd 8b81b0000000 mov eax,[ecx+0xb0] EXCEPTION_PARAMETER1: fd5bb930 CONTEXT: fd5bb630 -- (.cxr fffffffffd5bb630) eax=00000000 ebx=00000000 ecx=00000000 edx=00000002 esi=ffbc5960 edi=00000000 eip=8051fcdd esp=fd5bb9f8 ebp=fd5bba04 iopl=0 nv up ei pl nz na pe nc cs=0008 ss=0010 ds=0023 es=0023 fs=0030 gs=0000 efl=00010202 nt!IovUtilMarkDeviceObject+9: 8051fcdd 8b81b0000000 mov eax,[ecx+0xb0] Resetting default context DEFAULT_BUCKET_ID: DRIVER_FAULT BUGCHECK_STR: 0x7E LAST_CONTROL_TRANSFER: from 804d6946 to 8051fcdd STACK_TEXT: fd5bb9f4 804d6946 8112a0e8 00000000 fd5bba60 nt!IovUtilMarkDeviceObject+0x9 fd5bba04 80554a53 81133190 00000000 00000001 nt! IovUtilMarkStack+0x54 fd5bbacc 8055a657 00000000 05000001 81133190 nt!PipCallDriverAddDevice+0x404 fd5bbd18 8055af62 81248590 00000001 00000000 nt!PipProcessDevNodeTree+0x147 fd5bbd4c 804d7125 00000003 80549fc0 8054eddc nt!PiProcessReenumeration+0x5e fd5bbd74 804ed629 00000000 00000000 81259020 nt!PipDeviceActionWorker+0x133 fd5bbdac 8057c73a 00000000 00000000 00000000 nt! ExpWorkerThread+0xfe fd5bbddc 805124c1 804ed556 00000001 00000000 nt!PspSystemThreadStartup+0x34 00000000 00000000 00000000 00000000 00000000 nt! KiThreadStartup+0x16 FOLLOWUP_IP: nt!IovUtilMarkDeviceObject+9 8051fcdd 8b81b0000000 mov eax,[ecx+0xb0] FOLLOWUP_NAME: MachineOwner SYMBOL_NAME: nt!IovUtilMarkDeviceObject+9 MODULE_NAME: nt IMAGE_NAME: ntoskrnl.exe DEBUG_FLR_IMAGE_TIMESTAMP: 3d6de35c STACK_COMMAND: .cxr fffffffffd5bb630 ; kb BUCKET_ID: 0x7E_nt!IovUtilMarkDeviceObject+9 Followup: MachineOwner --------- TIA Dayalan. Tag: Dependencies inf directive Tag: 35839
  - 8
    - USB MIDI device driver development I'd completed the design of the hardware side of a USB MIDI music keyboard. However, I have no idea what will be the Windows XP device driver development. I read some books on the Windows WDM already but still have no idea. I understand that Windows XP/2K had USB-MINI class driver but don't know what else is needed? Can someone give me some pointer on what is needed? I had experienced in the VxD but not WDM Thanks Kan. Tag: Dependencies inf directive Tag: 35836
  - 9
    - hibernate & WM_POWERBROADCAST Hi, is it possible to send "BROADCAST_QUERY_DENY", from my application to Operatibg system . i want to do that to avoid waiting for Operating system message. Tag: Dependencies inf directive Tag: 35834
  - 10
    - Help on NDIS WDM (USB) Miniport for Win9x Hello Everyone, I am writing NDIS-WDM Miniport Driver for my USB Network Device. I have the sample code from Eliyas. I am able to understand the Win2k/XP way of NDIS-WDM as NDIS5.x supports built-in NDIS-WDM functionality. I want to understand what additions or changes required for making the NDIS-WDM (USB) miniport driver work on Win98/Me. Thanks in advance for the great help. Best Regards, GNRaj Tag: Dependencies inf directive Tag: 35831
  - 11
    - Creation of a file on Win ME OS I used ZwCreateFile to create a file in Win ME OS. I got a blue screen saying Windows Protection Error. According to Walter Oney ZwXXX routines are not supported by Win 9x and if used an error similar to what I have got will be seen. Is there any other way to create a file in kernel mode on Win ME OS? Tag: Dependencies inf directive Tag: 35828
  - 12
    - PCMCIA Window Access Speed Wait Hello, I have a PCMCIA card that uses i/o window and I need to specify window access speed to use the wait signal. I wonder if anyone has any idea how I can specify this in my driver. Thanks. Regards, Wei Wei Tag: Dependencies inf directive Tag: 35827
  - 13
    - Do GCAPS_VECTORFONT and GCAPS_HIGHRESTEXT work, and if so how? Neither of these seem to function, at least on Win2K they don't. No matter if GCAPS_VECTORFONT is set the vector fonts always come through DrvStrokePath instead. And even if GCAPS_HIGHRESTEXT is set the coordinates for placement are just as LONGs, not at FIX resolution. Regards, Joe Hindmarsh Tag: Dependencies inf directive Tag: 35820
  - 14
    - Please help with this crashdump This crash dump is my only lead (for now) I don't understand it. Where is the instruction pointer, it seems to be 0. And virtually there is no stack trace because the first frame is not found If you can understand any of this please help out :) 1: kd> !analyze -v **************************************************************************** *** * * * Bugcheck Analysis * * * **************************************************************************** *** DRIVER_IRQL_NOT_LESS_OR_EQUAL (d1) An attempt was made to access a pageable (or completely invalid) address at an interrupt request level (IRQL) that is too high. This is usually caused by drivers using improper addresses. If kernel debugger is available get stack backtrace. Arguments: Arg1: 00000000, memory referenced Arg2: 00000002, IRQL Arg3: 00000000, value 0 = read operation, 1 = write operation Arg4: 00000000, address which referenced memory Debugging Details: ------------------ READ_ADDRESS: 00000000 CURRENT_IRQL: 2 FAULTING_IP: +0 00000000 ?? ??? DEFAULT_BUCKET_ID: DRIVER_FAULT BUGCHECK_STR: 0xD1 LAST_CONTROL_TRANSFER: from f6100b6c to 00000000 STACK_TEXT: f38a0b74 f6100b6c 86278008 8627df58 8627dfb8 0x0 WARNING: Stack unwind information not available. Following frames may be wrong. f38a0ba4 f60f7385 858dfc48 00000011 f38a0bd4 fwdrv+0xcb6c f38a0bb4 f60f5d25 858dfc48 864b0a08 864acca8 fwdrv+0x3385 f38a0bd4 f60f5d7e 864067e8 f38a0bec f60f639b fwdrv+0x1d25 f38a0be0 f60f639b 864067e8 f38a0bfc f60f5116 fwdrv+0x1d7e f38a0bec f60f5116 864067e8 00000139 f38a0c14 fwdrv+0x239b f38a0bfc f60f68de 864067e8 00000139 f38a0c94 fwdrv+0x1116 f38a0c14 f60f6c28 86585210 00000020 0000000e fwdrv+0x28de f38a0c30 f60f6d76 864b3af0 86585210 f38a0c64 fwdrv+0x2c28 f38a0c40 804eb3c1 864b3af0 86585210 806bb2cc fwdrv+0x2d76 f38a0c50 805644d2 86585280 8652e0e0 86585210 nt!IopfCallDriver+0x31 f38a0c64 805651f6 864b3af0 86585210 8652e0e0 nt!IopSynchronousServiceTail+0x5e f38a0d00 8055e288 000000a4 00000000 00000000 nt!IopXxxControlFile+0x5a6 f38a0d34 805306a4 000000a4 00000000 00000000 nt!NtDeviceIoControlFile+0x28 f38a0d34 7ffe0304 000000a4 00000000 00000000 nt!KiSystemService+0xc9 00f1ddbc 00000000 00000000 00000000 00000000 SharedUserData!SystemCallStub+0x4 FAILED_INSTRUCTION_ADDRESS: +0 00000000 ?? ??? FOLLOWUP_IP: fwdrv+cb6c f6100b6c 8945f8 mov [ebp-0x8],eax FOLLOWUP_NAME: MachineOwner SYMBOL_NAME: fwdrv+cb6c MODULE_NAME: fwdrv IMAGE_NAME: fwdrv.sys DEBUG_FLR_IMAGE_TIMESTAMP: 3cbaab4f STACK_COMMAND: kb BUCKET_ID: 0xD1_CODE_AV_BAD_IP_fwdrv+cb6c Followup: MachineOwner --------- Tag: Dependencies inf directive Tag: 35809
  - 15
    - hibernate & WM_POWERBROADCAST Hi, is anyone can suggest how can i open an entry for os that can enter and observe if i permit to activate a hibernate or i deny hibernate activation?? Thanks Tag: Dependencies inf directive Tag: 35806
  - 16
    - print spooler driver PLEASE HELP every time i try to install my printer i get a message saying PRINT (SPOOL DRIVER STOPPED) AND THEN IT SAYS DO YOU WANT TO START DRIVER Y/N when i press the yes nothing happens . so i went into the drivers and tryed to start it but cant ! because one of its dependeces is ether stopped or up for deletion, but all are running PLEASE HELP THANKS Tag: Dependencies inf directive Tag: 35805
  - 17
    - Question: about hard drive serial numbers? hello, Does anybody know if there API or COM objects available to access the serial number of hard drives? The volume management functions appear to be specific just for the label :-( thank you in advance. beth Tag: Dependencies inf directive Tag: 35803
  - 18
    - Device Driver Hard Drive emulation Hi I hope this is the right place to ask this. I have a client with a collection of operating systems, one of which is an AS400, and I would like to right a bit of software that would allow a windows machine (98/ME/2000/XP they have a whole collection) to think that it has a hard drive, but it is in fact a network type of share. Do I need the DDK to do this, and what would be the best approach, writing it so that it could use the "map drive" type interface, or do a hard drive emulator, must like Deamon does with CD-rom drives? Any help and pointers in the right directions would be greatly appreciated. Are there any Books on the subject etc. Thanks Vaughan Tag: Dependencies inf directive Tag: 35802
  - 19
    - ULTRA DMA 4 & 5 Crashes my XP system This is a multi-part message in MIME format. ------=_NextPart_000_0046_01C3ABA9.E17DDA10 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Nature Hi all genius people, I spent many night hours trying to figure out why my promise Ultra DMA = HD (SeaGate and Maxtor) always seemed to crash when doing intensive File = transfer over the network. Replacing the Ultra.sys XP or 2000 driver = won't help me at all. If I transferred files between HD in the same = system thing is ok. Already changed the network cards, all kinds of = cards to see if a particular network card might be using too much DMA = timing, that didn't seem to solve my problem. I am not developing a driver, I am trying to keep my system from locking = up. There is no dump file to look at when the problem occurred. Any one = knows what could be my problem?=20 I appreciate if you can share what you know to solve this problem. Thanks a million, Ramboi ------=_NextPart_000_0046_01C3ABA9.E17DDA10 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD><TITLE id=3DridTitle>Nature</TITLE> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Dwindows-1252"><BASE=20 href=3D"file://D:\Program Files\Common Files\Microsoft = Shared\Stationery\"><%@ Language=3DVBScript%> <SCRIPT language=3Djavascript id=3DDebugDirectives runat=3D"server"> // Set these to true to enable debugging or tracing @set @debug=3Dfalse @set @trace=3Dfalse </SCRIPT> <% ' VI 6.0 Scripting Object Model Enabled %><% if StartPageProcessing() Then = Response.End() %> <FORM name=3DthisForm method=3Dpost> <STYLE></STYLE> <BGSOUND title=3D"Save from Ramboi Page" balance=3D0=20 src=3D"http://kams16.home.comcast.net/Cams16/thankyou.mid" volume=3D-190 = loop=3D2> <META content=3D"MSHTML 6.00.2800.1106" name=3DGENERATOR></HEAD> <BODY id=3DridBody bgColor=3D#ffffff background=3D"Nature = Bkgrd.jpg"><IMG id=3DridImg=20 src=3D"anabnr2.gif" align=3Dbottom> <P></P> <DIV>Hi all genius people,</DIV> <P>I spent many night hours trying to figure out why my promise Ultra = DMA HD=20 (SeaGate and Maxtor) always seemed to crash when doing intensive File = transfer=20 over the network.   Replacing the Ultra.sys XP or = 2000 driver=20 won't help me at all.   If I transferred files between HD = in the=20 same system thing is ok.  Already changed the network cards, = all kinds=20 of cards to see if a particular network card might be using too much DMA = timing,=20 that didn't seem to solve my problem.</P> <P>I am not developing a driver, I am trying to keep my system from = locking=20 up.  There is no dump file to look at when the problem occurred. = Any one=20 knows what could be my problem? </P> <P>I appreciate if you can share what you know to solve this = problem.</P> <P>Thanks a million,</P> <P>Ramboi</P><% ' VI 6.0 Scripting Object Model Enabled %><% = EndPageProcessing() %></FORM></BODY></HTML> ------=_NextPart_000_0046_01C3ABA9.E17DDA10-- Tag: Dependencies inf directive Tag: 35796
  - 20
    - Reboot without bluescreen I am working with 1394 device driver over windows 1394 bus driver. I kept night long testing for Isoch send requests. There was debugger on a serial port. My target PC rebooted sometime in the night. There was no bluescreen. No error displayed on the debugger. If BSOD occurs, it should break into my debugger which caught only one print regarding reboot "Shutdown occured". There are few prints before which suggest very strange pattern of events occured. My "surprise remove" called. Later "Add Device". Again "Surprise remove". Then later shutdown and no blue screen. I am sure no one removed 1394 device cables. Is there any chance why "Surprise remove" occured on its own. If there is reboot without BSOD, how can I check. How can I make windows always give me BSOD for error. I even have "complete memory dump" set in recovery console. This is not dumped even. I also have driver verifier selected for my driver. Any clues ? Everything worked as though I removed cable, connected it, again removed and then restarted my PC..I dont think I came to lab in my dream :) Thanks. Tag: Dependencies inf directive Tag: 35791
  - 21
    - device driver installation application in XP and Win9x I need to write an application to install my WDM device driver. The user will insert installation media before he plugs in the device. So when he plugs in the device for the first time, the device installation will be completely "silent". 1. For Windows XP, I followed the instructions in DDK. I use "SetupCopyOEMInf" function to copy my INF file to %windir%\inf foler, and a PNF file is generated too. However, when I plug in the device, the "New Device Found Dialog" still pops up. According to DDK, this should not happen if the PNF file is alreday generated. Is this because my driver is not digitally signed? 2. For Windows 98 SE, the "SetupCopyOEMInf" dosen't work. Is there a way to write a device driver installation program for Win9x/Me to install the driver before the device is plugged in? Thanks, Zhen Tag: Dependencies inf directive Tag: 35789
  - 22
    - driver recognition/windows 98SE I am having problems with Windows 98 SE finding drivers required to install a Creative Soundblaster Live 5.1 soundcard.Windows does not recognize the soundcard as Creative Soundblaster, only as PCI sound/media. Any help fixing this will be appreciated. Tag: Dependencies inf directive Tag: 35786
  - 23
    - kernel mode to user mode i want to port my kernel mode printer driver to user mode. can u help in this regard. thanks -saurabh . Tag: Dependencies inf directive Tag: 35781
  - 24
    - kernel mode to user mode i want to port my kernel mode printer driver to user mode. can u help in this regard. thanks -saurabh Tag: Dependencies inf directive Tag: 35779
  - 25
    - getting started i have ordered the windows xp sp1 ddk, and i have a book about the windows wdm and another about windows 2000 driver programming. i'm supposed to make a plotter driver but i can't understand half of what is written in driver source codes, what else do i need? any suggestions would greatly help, oh and i don't have prior experience on windows programming so please keep it simple, thanks!:) fyi: i'm on a tight budget so anything for free is very useful.:) Tag: Dependencies inf directive Tag: 35777

I have developed two drivers for Windows 2000: a virtual
bus driver and a filter driver for one of my devices. The
filter driver queries the bus driver, so the bus driver
needs to be loaded first. Unfortunately on system startup
the filter driver is loaded first and fails to initialize
properly. I've added a Dependencies directive to my
AddService section for the filter driver as follows:

[filter_addservice]
...
Dependencies = BusDriver
...

where "BusDriver" is the name of the service as it shows
up in the services section of the registry. Windows is
ignoring this directive. Can someone tell me the right
way to accomplish what I am trying to accomplish?

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Re: Dependencies inf directive by Eliyas

Eliyas
Wed Nov 19 14:39:15 CST 2003

Service dependencies don't work for PNP drivers.

How can a filter driver for one of your child device load before the bus
driver enumerates it? Either that or the other device for which the filter
driver is loaded is not a child device of your virtual bus driver.

If that's the case then you have to use PNP notification mechanism between
your filter and bus to detect when the other driver is ready for
communication.

Keyword: PNP Notification. Seach google for more info.

--
-Eliyas
This posting is provided "AS IS" with no warranties, and confers no rights.
http://www.microsoft.com/whdc/hwdev/driver/kb-drv.mspx

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Re: Dependencies inf directive by Brett

Brett
Wed Nov 19 15:39:46 CST 2003

That's right, the filter is a child of the SCSI bus, not
the virtual bus, but it still depends on the virtual bus.

Thanks for the suggestion. I will look into PNP
Notification.

>-----Original Message-----
>Service dependencies don't work for PNP drivers.
>
>How can a filter driver for one of your child device load
before the bus
>driver enumerates it? Either that or the other device for
which the filter
>driver is loaded is not a child device of your virtual
bus driver.
>
>If that's the case then you have to use PNP notification
mechanism between
>your filter and bus to detect when the other driver is
ready for
>communication.
>
>Keyword: PNP Notification. Seach google for more info.
>
>--
>-Eliyas
>This posting is provided "AS IS" with no warranties, and
confers no rights.
>http://www.microsoft.com/whdc/hwdev/driver/kb-drv.mspx
>
>
>.
>

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