Those audio drivers that uses porcls will have the following lines in its INF. Include=3Dks.inf, wdmaudio.inf Inside wdmaudio.inf, you will find several registries that have rundll32.exe in it. I think that would answer your question. Soccer -----Original Message----- From: wade dawson [mailto:wdawson61@xxxxxxxxx]=20 Sent: Thursday, April 10, 2003 9:25 AM To: wdmaudiodev@xxxxxxxxxxxxx Subject: [wdmaudiodev] .inf confusion Hi. I'm writing an Avstream-based, 1394 audio driver. In the DDK, I see lots of examples of the necessary .inf directives to install a portcls based audio driver. The Gfx DDK sample is Avstream-based and I have studied it and have some questions: - In a portcls the entries, HKR,,AssociatedFilters,,"wdmaud,swmidi,redbook" HKR,,Driver,,xyzaud.sys=20 HKR,Drivers,SubClasses,,"wave,midi,mixer,aux" ... and the interfaces.setion describe and expose the driver's filters / interfaces. In the Avstream samples .addregs, I see one or more "rundll32.exe streamci,StreamingDeviceSetup..." Runonce directives. =20 Which, if any, portcls-based audio driver .inf directives does this replace? What are the standard .inf directives for an Avstream-based, Audio-in/out Midi-in/out driver? Any help appreciated. =20 --------------------------------- Do you Yahoo!? Yahoo! Tax Center - File online, calculators, forms, and more ****************** WDMAUDIODEV addresses: Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx Subscribe: = mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=3Dsubscribe Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=3Dunsubscribe Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx URL to WDMAUDIODEV page: http://www.wdmaudiodev.de/ ****************** WDMAUDIODEV addresses: Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx URL to WDMAUDIODEV page: http://www.wdmaudiodev.de/