MacX and Power Macintosh DOS Compatibility Card (6/95)


My Power Macintosh DOS Compatible computer is successfully networked to my Netware server using IPX, and I am using TCP/IP software on my Macintosh successfully. However, whenever I run MacX, I see a variety of connection tool errors and freezing when I switch to DOS.

This is a known issue with the Power Macintosh DOS Compatibility Card and MacX. This issue is different from, only one protocol stack between two CPU's limitation in Tech Info Library article, "DOS Compatibility Card: Using Two IP Stacks (2/95)."

Any DOS networking activated by having VLM.EXE connect to the PC Networking Extension will result in MacX failures and/or DOS card freezing.

Suggested workarounds
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* Turn off DOS networking by removing the PC Network Extension from the Extensions folder in the System Folder, or do not load DOS networking software of any kind.

* Use another X windows package that does not use the MacTCP tool. We have not tested any other packages, but we believe the MacTCP tool is the source of the problem.

* Use an X windows servers on the DOS card.


Note that MacX works fine with a Power Macintosh DOS Compatible computer, only DOS networking is incompatible.


Support Information Services
Published Date: Feb 19, 2012