userbase++
If you all can confirm a single chip works, it would further motivate me to finish my schematic in KiCAD (and then work on a PCB layout) for the
http://grid.coop/Minetor/ concept. Even if I have to have two chips, that would work, but I would have to run them at something like 400mhz or slower because I have a 30W power budget from power-over-ethernet. The real question about is 100mhz silly is what is the system total Gigahash/watt at that clock speed. If you can get away with some serious undervolting, it might actually make sense.
Also see
http://bitspjoule.org/hg/nTekminer/rev/8128400e0aad for a patch that uses /usr/local/bin/gpio (from
http://wiringpi.com/download-and-install/ ) for reset. I would rather use mercurial and bitbucket, but I will post a git version if that means someone will use it or it gets merged upstream.
I'm aware of wiringPi, but I'm not sure this approach is that much different from what I am currently doing. It is a separate binary that runs with root privileges, albeit set via setuid rather than an explicit sudo. I do like the idea of executing it through a fork() though.