Article ID: 128715
Article Last Modified on 11/1/2006
APPLIES TO
- Microsoft Windows NT Workstation 3.51
- Microsoft Windows NT Server 3.51
This article was previously published under Q128715
SYMPTOMS
If you configure the 3Com TokenLink III network adapter (3C619B) with the default settings (3Com mode) using the DOS Configuration utility (3TOKDIAG.EXE) and start Windows NT, the following system events appear in the Event Viewer:
These symptoms occur sporadically.
CAUSE
The driver tries to load into an illegal memory address of 0x0 if the adapter is set for an I/O Port address of A20 or above.
These are the default settings of the 3C619B network adapter:
Mode: 3com
Base I/O: A20
Base (MMIO): CC000h
Shared Ram: D8000 - DBFFF
Memory mode: 16
I/O mode: 16
The Windows NT Diagostics (WINMSD) utility reports the following in the Adapters option:
Memory address length
0x0 0x2000
Port address length
0x110 0x4
WORKAROUND
To work around this problem:
- Configure the 3C619B network adapter to use an I/O port address below A20 in 3Com mode.
-or- Configure the 3C619B network adapter as follows:
Mode: IBM Base I/O: Primary Base (MMIO): CC000h Shared Ram: D0000h Memory mode: 16 I/O mode: 16
In Windows NT, use the IBM Token Ring Adapter driver.
STATUS
Microsoft has confirmed this to be a problem in Windows NT version 3.51. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.
The 3Com product discussed here is manufactured by 3Com Corporation, a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding this product's performance or reliability.
Additional query words: prodnt scsi ibmtok
Keywords: kbhardware kbsetup KB128715
