The mantissa of {HEAD ~ the second operand} is loaded into {TAIL ~ the MQ} register 13 from input output circuit 16 
The mantissa of { HEAD ~ the second operand } is loaded into { TAIL ~ the MQ } register 13 from input output circuit 16
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH