已知程序执行前有A=02H,SP=52H,(51H)=FFH,(52H)=FFH.下列程序执行后: POP DPH POP DPL MOV DPTR,#4000H RL A MOV B,A MOVC A,@A+DPTR PUSH A MOV

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已知程序执行前有A=02H,SP=52H,(51H)=FFH,(52H)=FFH.下列程序执行后:        POP     DPH         POP     DPL         MOV     DPTR,#4000H         RL      A         MOV     B,A         MOVC    A,@A+DPTR         PUSH    A         MOV
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已知程序执行前有A=02H,SP=52H,(51H)=FFH,(52H)=FFH.下列程序执行后: POP DPH POP DPL MOV DPTR,#4000H RL A MOV B,A MOVC A,@A+DPTR PUSH A MOV
已知程序执行前有A=02H,SP=52H,(51H)=FFH,(52H)=FFH.下列程序执行后:
POP DPH
POP DPL
MOV DPTR,#4000H
RL A
MOV B,A
MOVC A,@A+DPTR
PUSH A
MOV A,B
INC A
MOVC A,@A+DPTR
PUSH A
RET
ORG 4000H
DB 10H,80H,30H,50H,30H,50H
能不能对语句解析下

已知程序执行前有A=02H,SP=52H,(51H)=FFH,(52H)=FFH.下列程序执行后: POP DPH POP DPL MOV DPTR,#4000H RL A MOV B,A MOVC A,@A+DPTR PUSH A MOV
POP DPH ;SP=51H
POP DPL ;SP=50H
MOV DPTR,#4000H ;DPTR=#4000H
RL A ;A=04H(02H*2)
MOV B,A ;B=04H
MOVC A,@A+DPTR ;查表A=30H
PUSH A ;SP=51H,(51H)=#30H
MOV A,B ;A=04H
INC A ;A=05H
MOVC A,@A+DPTR ;查表A=50H
PUSH A ;SP=52H,(52H)=#50H
RET
ORG 4000H
DB 10H,80H,30H,50H,30H,50H

51单片机的 pc值怎么算?如:已知程序执行前有A=02H,SP=52H,(51H)=FFH,(52H)=FFH.下述程序执行后:POP DPHPOP DPLMOV DPTR,#4000HRL AMOV B,AMOVC A,@A+DPTRPUSH AccMOV A,BINC AMOVC A,@A+DPTRPUSH AccRETORG 4000HDB 10H,80H,30H,50 已知程序执行前有A=02H,SP=52H,(51H)=FFH,(52H)=FFH.下列程序执行后: POP DPH POP DPL MOV DPTR,#4000H RL A MOV B,A MOVC A,@A+DPTR PUSH A MOV 已知 SP=2110H,执行指令 PUSH AX 后,SP寄存器的值是多少? 已知sp=20h,(20h)=12h,(21h)=34h,(22h)=56h.单片机作业,求解写出执行下程序后,求出sp= 71(h)= (20h)= (22h)= .mov 20hpush 21hpush22hpop 21hpop22h 楼主谢过 已知SP=2110H,执行指令“PUSH AX”后,SP寄存器的值是多少?请说出解题过程, 已知(SP)=2000H,指令PUSH AX 执行后(AX)=? 若当前SP=70H,A=12H,B=34H,DPL=56H,执行下列的程序后,SP=若当前SP=70H,A=12H,B=34H,DPL=56H,执行下列的程序后,SP=?A=?PUSH ACCPUSH BPOP ACCPUSH DPL怎么分析呢, 假设(SS)=2000H,(SP)=0012H,(AX)=1234H,执行PUSH AX后,(SP)=( ).A.0014H B.0011H C.0010H D.000FH 1、已知(Ax)=5678H,(Bx)=1234H,(Ds)=2000H,(Es)=3000H,指令XCHG Ax,Bx执行后Ax的内容为()A、5678H B、1234H C、2000 H D、3000H2、设SP初始值为3050H,执行指令PUSH BX后,SP的值为()A、304FH B、304EH C、3048H D 单片机试题求助1.已知(R0)=20H,(20H ) =10H,(P0) =30H,(R2) =20H,执行如下程序段后( 40H ) =MOV @R0 ,#11HMOV A ,R2ADD A ,20HMOV PSW ,#80HSUBB A ,P0XRL A ,#45HMOV 40H ,A2.已知 ( R0 )=20H,(20H )=36H,(21H) =17H,(36H) =34H,执行过程 已知(SP)=09H,(DPTR)=4567H,在执行下列命令后,(SP)= ,内部RAM(OAH)= ,(OBH)=PUSH DPL PUSH DPH(SP)=OBH怎么来的? 求单片机习题答案,五、分析程序并写出结果:(每题5分,1、已知(R0)=20H,(20H ) =10H,(P0) =30H,(R2) =20H,执行如下程序段后( 40H ) =MOV @R0 ,#11HMOV A ,R2ADD A ,20HMOV PSW ,#80HSUBB A ,P0XRL A ,#45HMOV 40H ,A2、已知 (ss)=2000h,(sp)=0012h,(ax)=1234h,执行push ax后,=12h 答案有是20011h,可我觉得是20012h啊不是高位进20012h,低位进20011h,也就是(20012h)=12h,(20011h)=34h么 单片机程序分析题求解答 MOV A,# 00H DEC A DEC A MOV 18H,A (18H) =设(20H)=74H,(21H)=96H执行下列程序段MOV 30H,20HANL 30H,#1FHMOV A,21HSWAP ARL AANL A,#0E0HORL 30H,A (30H)=_______ 已知(SP)=09H,(DPTR)=4567H,在执行下列命令后,(SP)= ,内部RAM(OAH)= ,(OBH)= PUSH DPL PUSH DPH这个答案是什么?求助 一道汇编语言题,设(AX)=1122H,(BX)=3344H,(CX)=5566H,(SP)=2000H,试分析下列程序段PUSH AXPUSH BXPUSH CXPOP AXPOP CX执行后,AX BX CX SP中的内容各为多少 并画出堆栈变化示意图 下面程序段的运行结果是?Char s[80],*sp=HELLO!;sp=strcpy(s,sp);s[0]=''h''; puts(sp); 假定(SS)=2000H,(SP)=0100H,(AX)=2107H,执行指令PUSH AX后,存放数据21H的物理地址是?