DOCUMENT:Q95182 17-DEC-2000 [msdos] TITLE :DXMC0MOD.SYS Err Msg: Invalid Shared RAM Address PRODUCT :Microsoft Disk Operating System PROD/VER:MS-DOS:5.x,6.0,6.2,6.21,6.22 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft MS-DOS operating system versions 5.0, 5.0a, 6.0, 6.2, 6.21, 6.22 ------------------------------------------------------------------------------- SYMPTOMS ======== Due to a difference in line parsing between the DEVICE and DEVICEHIGH commands you may receive one of the following error messages when the IBM network device driver, DXMC0MOD.SYS, loads: Invalid shared RAM address -or- Invalid early token ring release After these error messages are displayed, the DXMC0MOD.SYS device driver does not load and the network fails to start. This occurs most often after MemMaker has been used, and DEVICE commands have been changed to DEVICEHIGH. CAUSE ===== This problem is caused by the manner in which DEVICEHIGH parses command lines. The DXMC0MOD.SYS device driver does not correctly interpret the DEVICEHIGH parameter information. WORKAROUND ========== To enable your network to start and avoid these error messages, make sure enough commas are used in the DXMC0MOD.SYS statement to act as delimiters for the three optional parameters required by DXMC0MOD.SYS. For example, each of the following lines cause error messages to be displayed: DEVICEHIGH=C:\LSP\DXMC0MOD.SYS 400000000001 DEVICEHIGH=C:\LSP\DXMC0MOD.SYS 400000000001,D800 DEVICEHIGH=C:\LSP\DXMC0MOD.SYS ,D800 To avoid these errors, change each line to the following: DEVICEHIGH=C:\LSP\DXMC0MOD.SYS 400000000001,, DEVICEHIGH=C:\LSP\DXMC0MOD.SYS 400000000001,D800, DEVICEHIGH=C:\LSP\DXMC0MOD.SYS ,D800, Additional query words: 6.22 6.00 6.20 ====================================================================== Keywords : Technology : kbMSDOSSearch kbMSDOS621 kbMSDOS622 kbMSDOS620 kbMSDOS600 kbMSDOS500 kbMSDOS500a Version : MS-DOS:5.x,6.0,6.2,6.21,6.22 ============================================================================= 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. Copyright Microsoft Corporation 2000.