Article ID: 290330
Article Last Modified on 8/10/2004
APPLIES TO
- Microsoft Windows CE 2.12 for the Handheld PC
- Microsoft Windows CE 2.11 for the Handheld PC
- Microsoft Windows CE 2.0 for the Handheld PC
- Microsoft Windows CE 1.0
- Microsoft Windows CE 3.0 for the Handheld PC
This article was previously published under Q290330
This article also applies to the following:
- All Microsoft Windows CE-based devices that have PC-Card or Compact Flash (CF) slots.
- All versions of Microsoft Windows CE up to and including version 3.0.
SYMPTOMS
Slow network throughput occurs when you use a NE2000-compatible network card with the default NE2000 device driver.
Although typical network performance is almost 8 Megabits-per-second (Mbps) on a 10-Mbps Ethernet, when this problem occurs, only 2.5-Mbps performance can be maintained.
CAUSE
This problem occurs because the network driver interface specification (NDIS) miniport driver for NE2000-compatible network adapters does not use 16-bit I/O in all cases where it is available. On PCMCIA and PCI buses, the driver selects only 8-bit I/O.
RESOLUTION
To resolve this problem, implement selection of 16-bit I/O when it is available.
Original equipment manufacturers (OEMs) who use any one of the following products can modify the sources for the NE2000.dll file to enable selection of 16-bit I/O when it is available:
- Platform Builder: version 2.1, version 2.11, or version 3.0
- Embedded Toolkit (ETK): version 2.0 or version 2.10
- OEM Adaptation Kit for Windows CE-based operating systems, such as HPC, PsPC, Pocket PC, and others
To implement selection of 16-bit I/O, you have to change the following source file:
Public\Common\Oak\Drivers\Netcard\Ne2000\Card.c
A version of the Card.c source file that contains the corrected code is available for download from Microsoft.
Note This version of the Card.c file may show other differences that are unrelated to 16-bit I/O when compared with the Card.c version in the development kit that you currently use.The following file is available for download from the Microsoft Download Center:
![[GRAPHIC: Download]](/wiki/index.php?title=File:Download.gif){kind=small}
Download the Card.exe package now. Release Date: December 8, 2003
For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591 How to Obtain Microsoft Support Files from Online Services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help to prevent any unauthorized changes to the file. The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.
Additional query words: card card.c
Keywords: kbdownload kbbug kbfix kbndis kbnetwork kbfile kbnetworkcard KB290330
