有几道计算机接口技术的题请各位高手帮忙解答!谢谢!
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发布时间:2022-04-29 02:25
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时间:2022-06-28 16:45
2题: 假设8253计数器0
T=t*n,N=T/t=f/F=1000000/100=10000
MOV AL ,34H
MOV DX ,273H
OUT DX, AL
MOV DX,270H
MOV AX,10000
OUT DX ,AL
MOV AL,AH
OUT DX,AL
3题:MOV AL,13H
OUT 30H,AL
JMP INTR1
INTR1:MOV AL,60H
MOV 31H,AL
JMP INTR2
INTR2:MOV AL,09H
OUT 31H,AL