打印支持代码5b00

节

5B00??MOV A,#00H??;A=00H

????????MOV R2,#07H??;R2=07H

????????MOV R3,#00H??;R3=00H

????????MOV R4,#00H??;R4=00H

????????MOV R5,#00H??;R5=00H

????????MOV A,#80H??;A=80H

????????MOV P1,A?????;P1=80H

BACK:??MOV A,R2?????;A=R2

????????JNC BACK1????;若R2末位位0，跳转BACK1

????????MOV A,R3?????;A=R3

????????JNC BACK2????;若R3末位位0，跳转BACK2

????????MOV A,R4?????;A=R4

????????JNC BACK3????;若R4末位位0，跳转BACK3

????????MOV A,R5?????;A=R5

????????JNC BACK4????;若R5末位位0，跳转BACK4

????????MOV A,P1?????;A=P1

????????ORL A,#01H????;A=A OR 01H

????????MOV P1,A?????;P1=A

????????SJMP BACK????;璺宠浆BACK

BACK1:?MOV A,R2?????;A=R2

????????RL A?????????;A左移1位

????????MOV R2,A?????;R2=A

????????MOV A,P1?????;A=P1

????????ORL A,#02H????;A=A OR 02H

????????MOV P1,A?????;P1=A

????????SJMP BACK????;璺宠浆BACK

BACK2:?MOV A,R3?????;A=R3

????????RL A?????????;A左移1位

????????MOV R3,A?????;R3=A

????????MOV A,P1?????;A=P1

????????ORL A,#04H????;A=A OR 04H

????????MOV P1,A?????;P1=A

????????SJMP BACK????;璺宠浆BACK

BACK3:?MOV A,R4?????;A=R4

????????RL A?????????;A左移1位

????????MOV R4,A?????;R4=A

????????MOV A,P1?????;A=P1

????????ORL A,#08H????;A=A OR 008H

????????MOV P1,A?????;P1=A

????????SJMP BACK????;璺宠浆BACK

BACK4:?MOV A,R5?????;A=R5

????????RL A?????????;A左移1位

????????MOV R5,A?????;R5=A

????????MOV A,P1?????;A=P1

????????ORL A,#10H????;A=A OR 010H

????????MOV P1,A?????;P1=A

????????SJMP BACK????;璺宠浆BACK

END:??????NOP?????????;无操作