Depending on the implementation of FGU 220, some instructions or instruction operand or result {HEAD ~ scenarios} may be trapped and handled or emulated by {TAIL ~ software} 
emulated by
Depending on the implementation of FGU 220 , some instructions or instruction operand or result { HEAD ~ scenarios } may be trapped and handled or emulated by { TAIL ~ software }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL