I also bought an IXO Telecomputing TC101. It's a handheld data terminal created by Holly and Robert Doyle, who created Merlin, Wildfire Pinball, Stop Thief and Code Name: Sector.
Can you give a brief hardware description? Or is it an epoxy blob festival?
I haven't gotten it yet. The patent says it's an 8085 with two 2732s, but I bet that was just the prototype. I found an article that says it has an NEC MCU.