3Com 3C589D manual Avoiding Memory Manager Conflicts

Avoiding Memory Manager Conflicts 4-3

Avoiding Memory Manager Conflicts

If you are not using Card Services and you are using an expanded (EMM386.EXE) or extended (HIMEM.SYS) memory manager on your PC, you must exclude an 8 K block of upper memory from use by the memory manager. The memory requirement is 4 K when the diagnostic tests are not running.

All PCs running Windows have a memory manager.

Follow these steps to exclude 8 K of memory for the

PC Card:

1Make a backup copy of the CONFIG.SYS file. Type: copy config.sys config.old [Enter]

2Use a text editor to edit the CONFIG.SYS file on your PC.

3Exclude the memory range that the PC Card is using. For example, type this line into the device section of the new CONFIG.SYS file:

device=c:\windows\emm386.exe noems x=DE00–DFFF

where x stands for exclude, followed by the memory range that the PC Card is using. In this example, the memory setting is DE00–DFFF. This is only a sample.

Refer to the manual that accompanied the memory manager software for additional instructions and information on how to exclude memory.

4Save the CONFIG.SYS file and exit the text editor.

5Reboot the PC.

The procedure for avoiding conflicts with a memory manager is completed.