8086/8088CPU工作在最小模式时:当CPU访问存储器时,要利用哪些信号?当CPU访问外设接口时,要利用哪些信号?
正确答案:
8086/8088CPU工作在最小模式时,若访问存储器,需用到以下信号:
、ALE、
、DEN、READY、
、
、
、AD0~AD15、A19/S6~A16/S3。
若访问外设,需用到以下信号:
、ALE、
、DEN、READY、
、
、AD0~AD15。
![](https://img.274949.com/Images/2020-04/06/0rpctw6t.jpg)
![](https://img.274949.com/Images/2020-04/06/7wafm33t.jpg)
![](https://img.274949.com/Images/2020-04/06/ftvtm0b9.jpg)
![](https://img.274949.com/Images/2020-04/06/1u4xddqx.jpg)
![](https://img.274949.com/Images/2020-04/06/1egs5pdq.jpg)
若访问外设,需用到以下信号:
![](https://img.274949.com/Images/2020-04/06/16nee1iu.jpg)
![](https://img.274949.com/Images/2020-04/06/7wafm33t.jpg)
![](https://img.274949.com/Images/2020-04/06/1u4xddqx.jpg)
![](https://img.274949.com/Images/2020-04/06/1egs5pdq.jpg)
答案解析:有
![](/editor/images/201705/qrcode_for_gh_573e2a458573_258.jpg)
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8086/8088CPU工作在最小模式时:当CPU访问存储器时,要利用哪些信号?当CPU访问外设接口时,要利用哪些信号?
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