MOV P2.4,A和MOV R2,@R0对吗?如果错了错在哪?并改正!

MOV P2.4,A和MOV R2,@R0对吗?如果错了错在哪?并改正! 单片机,AT89C51,一段小程序,ORG 0START:MOV R2,#8MOV A,#0FEHSETB CLOOP:MOV P2,A LCALL DELAYRLC ADJNZ R2 ,LOOPMOV R2,#8 LOOP1:MOV P2 ,A LCALL DELAY RRC A DJNZ R2,LOOP1 LJMP STARTDELAY:MOV R5,#20 ;延时子程序,延时0.2秒D1:MOV R6,#20D2:MOV R7 MOV P0,A MOV A,R1 MOV P2,AORG 00HSTART:JB P1.7,DIR1MOV DPTR,#TABLE1SJMP DIRDIR1:MOV DPTR,#TABLE2DIR:MOV R0,#00HMOV R1,#01HNEXT:MOV A,R0MOVC A,@A+DPTRMOV P0,AMOV A,R1MOV P2,ALCALL DAYINC R0RL AMOV R1,ACJNE R1,#0DFH,NEXTSJMP STARTDAY:MOV R6,#4D1:MOV R7 MOV R2,R7 MOV A,@R2 DEC DPTR CPL 2FH MOV 20H.7,F0 PUSH DPTR MOV PC,#2000H 判断下列指令是否合乎规定说明理由 proteus中单片机仿真程序问题以下是60S倒计时程序：org 0sjmp starorg 1bhsjmp t1sorg 30hstar:mov r2,#60mov r4,#20mov ie,#88hmov tmod,#10hmov th1,#3chmov tl1,#0b0hsetb tr1mov a,r2mov b,#10div abacall seg7mov p1,amov a,bacall seg7mov p2, mov p0,r1和mov p0,a分别要几个机器周期? MOV AX 4C9AH MOV BX 75BDA XCHG AH , AL ADD BX, AX MOV CH ,AH MOV CL,BL DEC CX 求AX?BX?AH?CH?CL?BL?解答过程详细一点MOV AX 4C9AH MOV BX 75BDA XCHG AH , AL ADD BX, AX MOV CH ,AH MOV CL,BL DEC CX 求AX?BX?A MOV P1,单片机的,还有个MOV A,P1 1.MOV [BX],SI 2．MOV CX,AX 3．LEA BL,A 4．MOV BL,200H 5．LEA DI,A[SI] ORG 0000HLJMP STARTORG 0040HSTRAT：MOV SP,＃60HMOV A,＃01HROTATE：MOV P1,ARL ALCALL DELAYSJMP ROTARTDELAY：MOV R0,＃0AHDELAY1：MOV R1,＃00HDELAY2：MOV R2,＃0B2HDJNZ R2,＄DJNZ R1,DELAY2DJNZ R0,DELAY1RETEND要求：1．详细的注释2.改 从这两段单片机汇编程序来看,RR,RL和RRC,RLC在这里区别不大?从这两段单片机汇编程序来看,RR,RL和RRC,RLC在这里区别不大,从P1.0,P1.1,P1.7,P1.6,P1.0循环.1.2.ORG 0START:MOV R2,#8MOV A,#0FEH;1111 1110LOOP1:MOV P1,ARL 谁看的懂这个?麻烦给注释下MAIN:MOV R0,#91H MOV A,@R0 MOV R6,A INC R0 MOV A,@R0 MOV R7,A MOV R4,#00H MOV R5,#55H LCALL Q0ACA MOV R4,#03H MOV R5,#0E8H LCALL Q0ADC MOV A,R7 CJNE A,03H,MAIN MOV A,R6 CJNE A,02H,MAIN MOV R0,#78H MOV A,@R0 MOV R6 MOV AX,468AH MOV SI,1357H MOV [SI],AX MOV CL,4 SHR BYTE PTR[SI],CL SHL WORD PTR[SI],1 MOV AX,[SI] mov %ebp, mov eax, MOV K0 英语翻译org 0000hLJMP MAINorg 0003hljmp int0org 000Bhljmp timer0MAIN:MOV SP,#60hmov TCON,#00000001bmov IE,#10000011bSTART:mov A,#0fhclr cMOV R2,#08HLOOP:RLC A ;左移一位MOV P1,A ;输出至P0LCALL DELAY ;延时0.2秒DJNZ R2,LOOP ;左移7次?MOV 1.下列指令中,错误的指令是( ). A.MOV A,@R1 B.MOV 41H,@1.下列指令中,错误的指令是( ).A.MOV A,@R1B.MOV 41H,@R1C.MOV RO,@R1D.MOV 41H,42H