Adaptec AHA154x Driver Fails to Install Second Adapter

 Last reviewed: March 15, 1996
Article ID: Q141732
The information in this article applies to:
  • Microsoft Windows NT Workstation version 3.51 with Service Pack 2 and 3
  • Microsoft Windows NT Server version 3.51 with Service Pack 2 and 3

SYMPTOMS

When you install a second Adaptec 154x SCSI controller in your computer running Windows NT version 3.51 with Service Pack 2 or 3, the driver fails to attach to the second adapter and the following events from the AHA154x are logged in the System log: 

   A conflict has been detected between two drivers which claimed two
   overlapping memory regions. Driver Aha154x, with device
   <\Device\ScsiPort1.Translated>, claimed a memory range with starting
   address in data address 0x28 and 0x2c, and length in data address 0x30.

   At the locations in the data area you will find the BIOS address of the
   first adapter.

CAUSE

The driver attempts to use the same BIOS area for the second adapter as it did for the first one, even if the second adapters BIOS is disabled or at a different address. Because this address is already in use by the first adapter, the drivers fails.

The adapter allocates the BIOS area, however, Windows NT does not use it to prevent problems with other adapters possibly using that memory addresses (for example, network adapter cards).

WORK-AROUND

If you did not encounter any problems with the driver from the Windows NT 3.51 release, use that driver.

RESOLUTION

This problem has been corrected in the latest Service Pack for Windows NT version 3.51.

STATUS

Microsoft has confirmed this to be a problem in Windows NT version 3.51. This problem was corrected in the latest Windows NT 3.51 U.S. Service Pack. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces): 

   S E R V P A C K
The AHA154x is manufactured by Adaptec, a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding this product's performance or reliability.

KBCategory: kbhw kbbug3.51.sp2 kbbug3.51.sp3 kbfix3.51.sp4
KBSubcategory: ntdriver
Additional reference words: 3.51 prodnt SP2 SP3

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Last reviewed: March 15, 1996
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