REP 當(dāng)CX/ECX<>0時重復(fù).
REPE/REPZ 當(dāng)ZF=1或比較結(jié)果相等,且CX/ECX<>0時重復(fù).
REPNE/REPNZ 當(dāng)ZF=0或比較結(jié)果不相等,且CX/ECX<>0時重復(fù).
REPC 當(dāng)CF=1且CX/ECX<>0時重復(fù).
REPNC 當(dāng)CF=0且CX/ECX<>0時重復(fù).
REP 當(dāng)CX/ECX<>0時重復(fù).
REPE/REPZ 當(dāng)ZF=1或比較結(jié)果相等,且CX/ECX<>0時重復(fù).
REPNE/REPNZ 當(dāng)ZF=0或比較結(jié)果不相等,且CX/ECX<>0時重復(fù).
REPC 當(dāng)CF=1且CX/ECX<>0時重復(fù).
REPNC 當(dāng)CF=0且CX/ECX<>0時重復(fù).
8086有8個8位通用寄存器(al,ah…),8個16位通用寄存器(ax,bx…),6個狀態(tài)標志(CF,ZF,SF,PF,OF,AF)和3個控制標志(DF,IF,TF),4個段寄存器,4種邏輯段,4個段前綴指令