I believe Tony got DisplayServer working on his - at least partially.

Nope, never tried that. What I did get working was EmpegTaxi. It was really tough trying to explain to Jazzwire things like "You know, it would be really useful to me if I could customize how it sends string x to the player, and what text it looks for when searching for string y..." without telling him what I was using it for. Fortunately, he was very nice and threw in those customizations anyway.

Then, somewhere along the road to to Release Candidate stage for the HSX, something about the USB timing got changed and EmpegTaxi quit working. Packets got lost on the way down the USB cable. But that was several versions ago and I haven't tried it since.