Article: Q320949
Product(s): Microsoft Windows NT
Version(s):
Operating System(s):
Keyword(s): kbOSWin2000fix kbWin2000sp3fix kbWinXPsp1fix
Last Modified: 15-AUG-2002
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The information in this article applies to:
- Microsoft Windows 2000
- Microsoft Windows XP Home Edition
- Microsoft Windows XP Professional
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SYMPTOMS
========
When a 1394 device performs an isochronous transfer, this operation may be
unsuccessful if certain non-page aligned data buffers are used.
CAUSE
=====
If a 1394 device driver passes non-page aligned data buffers at
REQUEST_ISOCH_ATTACH_BUFFERS time and uses the DESCRIPTOR_SYNCH_ON_SY flag in
the attached isoch descriptors, you may receive an error message on a blue
screen. Note that not all non-page aligned buffers cause this behavior. This
behavior occurs if Ohci1394.sys does not correctly map the ScatterGather DMA
array.
RESOLUTION
==========
To resolve this problem, obtain the latest service pack for Windows 2000. For
additional information, click the following article number to view the article
in the Microsoft Knowledge Base:
Q260910 How to Obtain the Latest Windows 2000 Service Pack
The English-language version of this fix should have the following file
attributes or later:
Date Time Version Size File name Operating system
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07-Mar-2002 10:51 5.0.2195.5040 37,712 OHCI1394.SYS Windows 2000
11-Mar-2002 12:18 5.1.2600.34 55,552 OHCI1394.SYS Windows XP
STATUS
======
Microsoft has confirmed that this is a problem in the Microsoft products that
are listed at the beginning of this article. This problem was first corrected in
Windows 2000 Service Pack 3.
Additional query words: kbAppCompat kbBaseOS bluescreen fail crash
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Keywords : kbOSWin2000fix kbWin2000sp3fix kbWinXPsp1fix
Technology : kbWinXPHome kbWinXPPro kbWinXPProSearch kbWinXPHomeSearch kbWinXPSearch
Version : :
Issue type : kbbug
Solution Type : kbfix
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