The firmware is now feature-complete and ready for use. I've uploaded a release build of the firmware. You can build your own hardware and use micro-samba to load it as described in an earlier log.

This firmware build assumes a 12 MHz crystal. I'll be using those exclusively going forward, as they allow maxing out the CPU frequency. That said, 16 MHz will also work if that's what you've got handy. Be sure to adjust the .atstart accordingly.

The release build running at 300 MHz benchmarks at around 750 kB/sec. Short of the goal, but close, and much better than v2.