on the Gridseed support, is the Scrypt only support turning off the Sha side of the chip.
Are you saying that when scrypt only mode is enabled the sha side is still on?
yes on the original build of cpuminer(sorry stated cgminer above) the sha part of the circuit was on and pulling power.
a new build that only runs Scrypt, turns off the sha part of the circuit and runs at a much lower draw
Haven't tried bfgminer yet since the 5 chip Gridseed has been added on a beta build?
El