WDM USB driver trouble under vista

From: Hua.watson@xxxxxxxxx
Date: Sun, 11 May 2008 03:14:33 -0700 (PDT)

zantetsu says:
========================================================
I created WDM USB driver for Windows 2000 and XP.
Our device has no memory.
So the transfer shouldn't stop.
If the transfer stops, the stop period is limited about 50 micro
seconds.
I could get data from our device under Windows 2000 and XP.

I could not get a part of data under Vista.
I found that
the transfer stops during 125 micro seconds per 512k bytes transfer
under Vista.

What should I do?

Thanks.
==========================================================

I have the same problem ( a time-gap about 3 milisecond after 512k,
each time ) in same situation now. Anyone knows how to solve this
problem ?

Thanks
.

Follow-Ups:
- Re: WDM USB driver trouble under vista
  - From: Tim Roberts

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Relevant Pages

Re: WDM USB driver trouble under vista.
... I could get data from our device under Windows 2000 and XP. ... I could not get a part of data under Vista. ... I found that the transfer stops during 125 micro seconds per 512k ... sending one request at a time, I would expect the results you describe. ...
(microsoft.public.development.device.drivers)
WDM USB driver trouble under vista.
... If the transfer stops, the stop period is limited about 50 micro ... I could get data from our device under Windows 2000 and XP. ... I could not get a part of data under Vista. ...
(microsoft.public.development.device.drivers)