No.19017 作者:nicsoft 邮件: ID:9170 登陆:3次 文章数:8篇 最后登陆IP:218.8.67.201 最后登陆:2003/5/12 19:10:41 注册:2003/2/17 21:07:00 财富:41 发帖时间:2003/2/17 21:09:00 发贴者IP:218.8.66.249 标题:nicsoft:初学者:有几个解不了的问题,请大虾帮忙 摘要:No.19017初学者:有几个解不了的问题,请大虾帮忙 这是我们做的作业,请大虾帮忙解答一下。谢谢!! 1.Many CPUs have a special bus cycle type for interrupt acknowledge.Why? 2.If all the gates in Fig.3-19 have a propagation delay of 10 nsec, and all other delays can be ignored, what is the earliest time a circuit using this design can be sure of having a valid output bit? 3.The ALU of Fig.3 ......
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