I gave up on the bitmaintech branch because of some of the other changes they made to cgminer and pulled the latest ckolivas 3.9.0 repository, merged the bmsc driver and posted it to
https://github.com/fractalbc/cgminer.git This is very interesting.
Can you just clarify what you did when you "merged the bmsc driver"
The bitmain version of cgminer is terribly unstable and doesn't work with the adafruit piminer lcd scripts because of the API changes Bitmain have made so id be keen to replicate what you have done.