设R0=42H,(42H)=80H,A=48H,(50H)=08H,指出下列程序执行后,上述各单元内容的变化。 MOV A,@R0 MOV @R0,50H MOV 50H,A
举一反三
- 设R0=42H,(42H)=80H,A=48H,(50H)=08H,指出下列程序...OV @R0,50HMOV 50H,A
- R0=50H,(50H)=36H,执行MOV A, @R0后,A的内容是( )H。
- 设R0=42H,(42H)=80H,A=48H,(50H)=08H,指出下列程序执行后,上述各单元内容的变化。 MOVA,@R0 MOV@R0,50H MOV50H,A
- 根据下列程序段运行情况,将运行结果和指令分别补充完整。 (1)( );(A)=10H ( );(B)=10H ( );(A)=20H MOV 23H,A;(23H)=20H ( );(A)=21H MOV 24H,A;(24H)=21H INC A ;(A)=22H ( );(25H)= 22H (2)MOV A,#50H;(A)=( )H MOV R0,A;(R0)=( )H MOV @R0,#30H;(50H)=( )H ADD A,@R0;(A)=( )H MOVX @R0,A;(50H)=( )H
- 指令 MOV R0,20H 执行前 (R0)=30H, (20H)=38H,执行后(R0)=?