Right now we are supporting both VxD and WDM drivers for our products. Since our next products will only have WDM drivers, we will be supporting Me/2K/XP only. Matt Martin Puryear wrote: > [Note to self: read the entire thread before replying...] > Thanks for the response Jerry. =20 > > Without looking further, I don't understand why 98SE does not work with = > 24-bit playback. I unfortunately can state with some certainty that we = > would not pursue a QFE for Windows 98 or 98SE. From our point of view = > 98SE and 98 (being four and five OSes ago) are pretty much history. = > After preaching the single-binary-across-multiple-OSes message for a = > while, I hope that doesn't pose too much problem for you all. =20 > > I realize that you folks are just now starting to make good money on the = > operating systems that MS seems to have forgotten about in our focus on = > ".Next". Does your target still include 98 at this point, or do = > some/all of you think about 2K/ME/XP only? > > ...just an informal poll. > > Martin Puryear > Development Manager > Windows Audio/Video Platform > > This posting is provided "AS IS" with no warranties, and confers no = > rights. > Ce message est fourni en l'=E9tat, sans garantie d'aucune sorte, et ne = > vous conf=E8re aucun droit. Vous assumez tous les risques li=E9s =E0 son = > utilisation. > > -----Original Message----- > From: Jerry J. Trantow = > [mailto:Jerry.Trantow@xxxxxxxxxxxxxxxxxxxxxxxxxxx]=20 > Sent: Monday, December 02, 2002 9:28 AM > To: wdmaudiodev@xxxxxxxxxxxxx > Subject: [wdmaudiodev] Re: White Papers now available > > I have not retested the 24 bit playback issue with Win2000SP3 or WinMe = > with the QFE. Using the latest QFE's at the time, I observed truncation = > with ever OS except WinXP. =20 > I used a test function which opens up various formats and sends playback = > buffers of known values. I also installed a filter driver on my audio = > device which displayed the usb data sent to my device. I would be happy = > to post the code I used if anyone wants to verify the 24 bit playback = > with the SPs and QFEs. > > -----Original Message----- > From: wdmaudiodev-bounce@xxxxxxxxxxxxx = > [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Daniel E. Germann > Sent: Thursday, November 28, 2002 8:30 AM > To: wdmaudiodev@xxxxxxxxxxxxx > Subject: [wdmaudiodev] Re: White Papers now available > > Hi, Martin. > > Thanks for these great resources. I was so excited I read them before I = > had breakfast. ;-) > > In the Audio Device Performance white paper, I saw that a QFE is now = > available for Windows Me to fix the KMixer "audio truncation to 16 bits = > on playback" problem. I knew about Windows 2000 SP3 having the fix, but = > I hadn't heard about the Windows Me QFE. Thanks. > > The white paper also says the truncation problem does not apply to = > Windows 98 or Windows 98SE. Is that correct? I seem to recall Jerry = > Trantow doing some testing with USB audio devices in July of 2001 that = > indicated the truncation did occur in Windows 98SE. If the Windows = > 98[SE] KMixer isn't truncating output data, that would be good to know. = > We've been holding off on 24-bit USB devices and WDM Audio drivers = > because of this issue. > > Thank you! > > Best regards, > -Dan > > ----- Original Message ----- > > Subject: [wdmaudiodev] White Papers now available > > Date: Wed, 27 Nov 2002 17:42:41 -0800 > > From: "Martin Puryear" <martinp@xxxxxxxxxxxxx> > > > > I would like to announce the immediate availability of two white > papers. > > > > -------------------------- > > Audio Device Performance and Windows XP: Best Practices for Drivers > > > > http://www.microsoft.com/hwdev/tech/audio/highperf-drv.asp > > ... > > ****************** > > 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=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/ ****************** 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/