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MOV AL,06H OUT 61H,AL CALL A1 MOV AL,3FH
OUT 61H,AL CALL AA AA PROC IN AL,62H
TEST AL,08H JZ C1 JMP AA C1: MOV AL,00H OUT 61H,AL JMP MAIN RET AA ENDP A1 PROC MOV CX,0100H BB1:MOV BX,00B0H BB2:IN AL,60H
CMP AL,00000001B JZ AA1
CMP AL,00000010B JZ AA2
CMP AL,00000100B JZ AA3
CMP AL,00001000B JZ AA4
CMP AL,00010000B JZ AA5
CMP AL,00100000B JZ AA6
CMP AL,01000000B JZ AA7
CMP AL,10000000B
JZ AA8 DEC BX JNZ BB2 LOOP BB1 RET A1 ENDP
AA1:MOV DX,61H
MOV AL,06H OUT DX ,AL JMP AA AA2:MOV DX,61H
MOV AL,5BH OUT DX ,AL JMP AA AA3:MOV DX,61H
MOV AL,4FH OUT DX ,AL JMP AA AA4:MOV DX,61H
MOV AL,66H OUT DX ,AL JMP AA AA5:MOV DX,61H
MOV AL,6DH OUT DX ,AL JMP AA AA6:MOV DX,61H
MOV AL,7DH OUT DX ,AL JMP AA AA7:MOV DX,61H
MOV AL,07H OUT DX ,AL JMP AA AA8:MOV DX,61H
MOV AL,7FH OUT DX ,AL JMP AA CODE ENDS END START
参考文献
1. 何超. 《微型计算机原理及应用》.中国水利水电出版社,2007
2. 杨立. 《微型计算机原理与接口技术学习与实验指导》. 中国水利水电出版社,2008.
3. 彭虎,周佩玲,傅忠谦.《微机原理与接口技术(第二版)》.电子工业出版社,2008.
4. 朱承高.电工及电子技术手册[M].北京:高等教育出版社,1990
5. 姚燕南,薛均义.微型计算机原理.西安:西安电子科技大学出版社,2000
6. 张迎新.单片微型计算机原理、应用及接口技术.北京:国防工业出版社,1999.
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