0x80	r/w	write to this register start the sequencer. 
	read:
	bit 31		readout busy
	bit 30-8	not used
	bit 7-5		number of free buffer available
	bit 4		if 1, infinite daq loop started.
	bit 3-2		specify which of the four buffers available to be used
	bit 1		if 1, reads both counter and memory data. Otherwise only 
			counters are read.
	bit 0		if 1, is calibration

Bits 7-5 (number of free buffers) is set to '100' (4) on reset. Poll bit 7, when it goes from '1' to '0' it means at least one buffer has data to read out.

-- EricHazen - 2015-11-04