IBM DIAGS.COM Token Ring Utility Must Run in MS-DOS Mode

 Last reviewed: August 28, 1995
Article ID: Q131545
The information in this article applies to:
  • Microsoft Windows 95

SYMPTOMS

When you try to run the IBM DIAGS.COM utility in a windowed MS-DOS prompt session, the utility does not run and you receive the following error message: 

   This program has performed an illegal operation and will be
   terminated. Quit all programs, and then restart your computer.
If you click the Details button you receive the following information: 

   The program tried to execute an invalid instruction.

CAUSE

This error occurs because the DIAGS.COM utility tries to access the Token Ring adapter directly. This adapter is protected by the Windows 95 protected-mode network adapter driver.

RESOLUTION

To work around this problem, run the DIAGS.COM utility in MS-DOS mode. To do so, follow these steps:

  1. Locate the DIAGS.PIF file.

  2. Use the right mouse button to click the DIAGS.PIF file, then click Properties on the menu that appears.

  3. Click the Program tab, then click the Advanced button.

  4. Click the MS-DOS Mode check box, then click OK.

MORE INFORMATION

The DIAGS.COM utility is used to test IBM 16/4 Token Ring adapters.

The third-party product discussed in this article is manufactured by a vendor independent of Microsoft; we make no warranty, implied or other- wise, regarding this product's performance or reliability.

KBCategory: kb3rdparty kberrmsg
KBSubcategory: wpp95 win95 appscomp
Additional reference words: 95 tr token-ring token/ring 16-4

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.

Last reviewed: August 28, 1995
© 1998 Microsoft Corporation. All rights reserved. Terms of Use.