A.DS B.ES C.CS D.SS
A.(AX)=7FFCH,(OF)=1,(CF)=1 B.(AX)=17FFCH,(OF)=1,(CF)=1 C.(AX)=7FFCH,(OF)=0,(CF)=1 D.(AX)=17FFCH,(OF)=0,(CF)=1
A.0ABCD1234H B.0FFFFFFE3H C.000000E3H D.0ABCD12E3H