I have been thinking about ways to link an M1 to my Stargate. One method is to send ASCII back and forth between serial ports on the two systems but another might use the TW523 ports. I'm thinking of using a power strip with a good X10 filter on it so no X10 signals leak out to the power line. I would then plug the TW523 from the M1 and the TW523 from my Stargate right next to each other on the powr strip. This would effectively make an isolated communications channel where X10 addresses could be used as flags to trigger things between the two systems.