中南大学微机原理课程设计报告(7)

MOV CL,04H SHL TEMP,CL POP CX DEC CNT JMP KEYH1 LPH4:

CMP CNT,03H JNZ LPH5 PUSH AX

LPH5:

LPH6:

LPENDH:

MOV AL,TEMP OR AL,BH

MOV BYTE PTR DS:[DATA22],AL MOV BYTE PTR DS:[DATA8],AL CALL CONVERSALL MOV SI,DATA4 CALL LEDDISP POP AX

MOV TEMP,00H DEC CNT JMP KEYH1 CMP CNT,02H JNZ LPH6 MOV TEMP,BH PUSH CX

MOV CL,04H SHL TEMP,CL POP CX DEC CNT JMP KEYH1 CMP CNT,01H JNZ LPENDH PUSH AX

MOV AL,TEMP OR AL,BH

MOV BYTE PTR DS:[DATA23],AL MOV BYTE PTR DS:[DATA9],AL CALL CONVERSALL MOV SI,DATA4 CALL LEDDISP POP AX

MOV TEMP,00H 30

MOV BH,0EH ;在chose中选SHOWHOUR STI RET

;************************年月日**************************** SHOWYEAR:

PUSH AX

MOV AL,BYTE PTR DS:[DATA13] MOV BYTE PTR DS:[DATA9],AL MOV AL,BYTE PTR DS:[DATA12] MOV BYTE PTR DS:[DATA8],AL MOV AL,BYTE PTR DS:[DATA11] MOV BYTE PTR DS:[DATA7],AL POP AX CLI

MOV DX,PORT1 IN AL,DX AND AL,07H STI JZ SHOWYEAR

MOV BH,0EH RET

;************************时分秒**************************** SHOWHOUR:

PUSH AX

MOV AL,BYTE PTR DS:[DATA23] MOV BYTE PTR DS:[DATA9],AL MOV AL,BYTE PTR DS:[DATA22] MOV BYTE PTR DS:[DATA8],AL MOV AL,BYTE PTR DS:[DATA21] MOV BYTE PTR DS:[DATA7],AL POP AX CLI

MOV DX,PORT1 IN AL,DX AND AL,07H STI JZ SHOWHOUR

MOV BH,0EH RET

;************************年月日**************************** SHOW1:

PUSH AX

MOV AL,BYTE PTR DS:[DATA33] MOV BYTE PTR DS:[DATA9],AL

31

MOV AL,BYTE PTR DS:[DATA32] MOV BYTE PTR DS:[DATA8],AL MOV AL,BYTE PTR DS:[DATA31] MOV BYTE PTR DS:[DATA7],AL POP AX RET

;*****************闹钟******************************* RING: MOV DX,CTRL ;0073H 控制端口

MOV AL,90H ;A方式0 C上半输出 B方式0输出 C下半输出

NORING: CODE END

OUT MOV MOV OUT RET

MOV MOV OUT MOV MOV OUT RET ENDS START

DX,AL

DX,PORTB AL,0FFH DX,AL DX,CTRL ;0073H 控制端口

AL,90H ;A方式0 C上半输出 B方式0输出 C下半输出DX,AL

DX,PORTB AL,00H DX,AL 32

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