下列哪条指令是正确的( )a) PUSH R2 b) ADD R0,Ac) MOVX A @DPTR d) MOV @R,A
A: PUSH R2
B: ADD R0,A
C: MOVX A @DPTR
D: MOV @R,A
A: PUSH R2
B: ADD R0,A
C: MOVX A @DPTR
D: MOV @R,A
举一反三
- 下列哪条指令是正确的() A: PUSH R2 \n B: ADD R0,A\n C: MOVX A @DPTR \n D: MOV @R0,A
- 下列指令中正确的是______ A: PUSH R2 B: ADD R0, A C: MOV A,@DPTR D: MOV @R0,A
- ORG 0 LJMP START ORG 30HSTART: MOV SP,#50H MOV DPTR,#3000H MOV R0,#20H MOV A,#23H MOV R2,#0FH SETB 01H SETB C ADDC A,@R0 INC R0 MOV @R0,A LOOP:DJNZ R2, LOOP SWAP A PUSH ACC INC DPH MOVX @DPTR,A POP B RR A ADD A,B MOV P1,A END(21H)= (R2)= (A)= (B)= (3100H)=
- ORG 0 LJMP START ORG 30H START:MOV SP,#50HMOV R2,#10H MOV DPTR,#3000H CLR ALOOP: MOVX @DPTR,A INC DPTR DJNZ R2,LOOP INC DPH INC DPH MOV 20H,#36H SETB 00H MOV A,20H MOVX @DPTR,A INC A INC A PUSH ACC XCH A,R2 POP DPH ADD A,#55H PUSH ACC END(A)= (R2)= (20H)= (DPTR)= (SP)=
- 下列哪条指令是正确的() A: ADD R0,A B: RLC 30H C: MOV @R0, A D: PUSH R2