单片机 散转程序设计 软件实验.doc

实验九 散转程序设计 实验目的 1．进一步熟悉MCS-51指令系统和汇编语言程序设计。 2．学会用三种不同的方法设计散转程序，并掌握它们的区别。 实验内容 方法一 ORG 0000H MOV 20H，#00H (20H)=00H 3字节 TB0: MOV DPTR，#TABL (DPTR)=(TABL)=13H 3字节 (DPTR)=(TABL)=13H 3字节 (DPTR)=(TABL)=13H 3字节 (DPTR)=(TABL)=13H 3字节 (DPTR)=(TABL)=13H 3字节 MOV A,20H (A)=(20H)=00H 2字节 (A)=(20H)=01H 2字节 (A)=(20H)=02H 2字节 (A)=(20H)=03H 2字节 (A)=(20H)=04H 2字节 ADD A,20H (A)=(A)+(20H)=00H 2字节 (A)=(A)+(20H)=01H+01H=02H 2字节 (A)=(A)+(20H)=02H+02H=04H 2字节 (A)=(A)+(20H)=03H+03H=06H 2字节 (A)=(A)+(20H)=04H+04H=08H 2字节 ADD A,20H (A)=(A)+(20H)=00H 2字节 (A)=(A)+(20H)=02H+01H=03H (PSW)=OOH 2字节 (A)=(A)+(20H)=04H+02H=06H (PSW)=00H 2字节 (A)=(A)+(20H)=06H+03H=09H 2字节 (A)=(A)+(20H)=08H+04H=0CH (PSW)=00H 2字节 ADD A,DPL (A)=(A)+(DPL)=13H (PSW)=01H (P)=01H 2字节 (A)=(A)+(DPL)=03H+13H=16H (PSW)=01H (P)=01H 2字节 (A)=(A)+(DPL)=06H+13H=19H (PSW)=01H (P)=01H 2字节 (A)=(A)+(DPL)=09H+13H=1CH (PSW)=01H (P)=01H 2字节 (A)=(A)+(DPL)=0CH+13H=1FH (PSW)=01H (P)=01H 2字节 MOV DPL,A (DPTR)=(A)=13H 2字节 (DPTR)=(A)=16H 2字节 (DPTR)=(A)=19H 2字节 (DPTR)=(A)=1CH 2字节 (DPTR)=(A)=1FH 2字节 MOV A， #00H (A)=00H (PSW)=00H 2字节 (A)=00H (PSW)=00H 2字节 (A)=00H (PSW)=00H 2字节 (A)=00H (PSW)=00H 2字节 (A)=00H (PSW)=00H 2字节 JMP @ A+DPTR (PC)=(A)+(DPTR)=11H 1字节 (P