As announced in several recent news articles, CALCnet2.2 is a long-running project of mine that has in the past two weeks reach fruition on real hardware devices. NetPong v1.0 is a small game that I have been developing for the last few days to showcase the capabilities of CALCnet 2.2, including broadcasting, one-to-many and one-to-one transmissions, fault and collision tolerance, and low latency capabilities. NetPong allows you to play Pong across an arbitrary number of calculators. With two, three, four or more calculators, NetPong creates a single virtual LCD for a standard Pong game, complete with scoring, paddles, distributed pausing and quitting, and more. Although no specialized hardware is required, playing with more than two calculators requires a simple splice of I/O cables together; feel free to ask here on the forums for assistance with that.
CALCnet2.2 will continue to be developed, and I plan to soon re-integrate it into Doors CS 7, no mean feat considering how little free space is left in it for me to add new features. I'll let the somewhat unwieldy screenshots of two-, three-, and four-calculator gameplay speak for themselves.