5、()四、阅读并分析程序(每小题8分,共16分)1.下列程序执行后,结果如何? MOV R0,#7FH MOV 7EH,#0 MOV 7FH,#40H DEC @R0 DEC R0 DEC @R0答:(R0)=__H,(7EH)=___H,(7FH)=____H。2.设R0=20H,R1=25H,(20H)=80H,(21H)=90H,(22H)=A0H,(25H)=A0H,(26H)=6FH,(27H)=76H,下列程序执行后,结果如何?CLRCMOV R2,#2HLOOP:MOV A,@R0ADDCA,@R1MOV@R0,AI