UPDATE: In short, I have this system working, with a Python-in-Linux parser, which could soon be cross-platform.
About 150 loops towards the beginning get dropped, due to the Python script's startup and initialization time. I'm using Pysco to JIT-compile the Python code, and the script uses less than 8% CPU on my 1GHz programming laptop running Ubuntu Linux.
Currently, it performs readouts of two joysticks and outputs four PWM values. I'm gonna add more on. You can see live Subversion snapshots of the work at
http://ubuntubackports.org/adambots-2006/ . gumstix/orion.py contains the Python PC parser, and ifi_code/trunk contains Linux-compilable source code.
It's not very user-friendly right now; I'll work on getting it polished a bit, and by the end of the month, I'll make a GPL'd beta release for you guys to play with.
BTW, we're starting to set up a wiki for our team, and (
http://adambots.gotdns.com/cgi-bin/v...rceCoProcessor) this seems like the home of our coprocessor project. The page is horribly unfinished right now, so ignore it for a couple days

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