A.CX B.DX C.SI D.BP
A、寫(xiě)計(jì)數(shù)器0 B、寫(xiě)計(jì)數(shù)器1 C、寫(xiě)計(jì)數(shù)器2 D、寫(xiě)控制字
A.SS B.BP C.ES D.IP