I recently acquired two copies of Battle Chess, both of which I am going to use on Mac Classics. I read in the manual that you can play two Macs against each other using either a null modem cable or an ImageWriter cable (which may be my best option...I'll be trying this out this coming weekend).
What would I need to make a null modem cable for a Mac?
What would I need to make a null modem cable for a Mac?

