Hi ALL, ?????????????? Finaly i am able to finish the virtual mic and speaker problem,?my team?got the code working. Thanks For all the support from the freelists member Karthik SG -----Original Message----- From: Tim Roberts <timr@xxxxxxxxx> To: wdmaudiodev@xxxxxxxxxxxxx Sent: Wed, 17 Sep 2008 4:10 am Subject: [wdmaudiodev] Re: about DMA buffer karthiksharmasg@xxxxxxx wrote: > > Thanks Tim, For that message. > All this weekend i gone through the DDK > documentation and got the knowledge of MSVAD. > Now i am using an shared memory to feed the recorder > from the o/p of the player, I followed the following steps > 1. Create an section using ZwCreateSection. > 2. opened this section using ZwOpenSection > 3. Mapped the opened section to the current process virtual > add space using ZwMapViewOfSection > 4. Writting to the section using RtlCopy Memory > > Untill step 4 all went good but while writing to the virtual > address space i am getting crash "0X00000D1, {28d0000, 2, 1, a9b10dea}" > Can any ane explain me what is wrong, Can i use RtlCopyMemory in > this senario or Not?? 28D0000 is a user-mode address. You will need to use the kernel-mode address for your section when doing your copy. -- Tim Roberts, timr@xxxxxxxxx Providenza & Boekelheide, Inc. ****************** 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.com/