![](https://i.imgur.com/35JOaYB.jpg)
[理工] 100交大 計組
![](https://i.imgur.com/35JOaYB.jpg)
想問一下第七題該怎麼解釋呢?
看不太懂題目QQ
http://i.imgur.com/3ybNH0M.jpg
![](https://i.imgur.com/3ybNH0M.jpg)
上面那題軟體偵測overflow
想問一下有號數bne一下三個指令要怎麼解釋呢?
還有無號數的nor要怎麼推出2^32-t1-1?
第一次看張凡的書還是不太懂QQ
下面那個lw的時間我算1470耶
為什麼mux只要算一次呀,reg的rt寫入跟ALU的addr這樣不是兩個嗎?
PC+4這個地方是每個指令都要算嗎?還是只有beq需要而已?
Sign-extend同樣的問題
http://i.imgur.com/a7gfl1Z.jpg
![](https://i.imgur.com/a7gfl1Z.jpg)
這裡想問一下don't care跟不執行要怎麼判斷
ADD的mem部份基本上是不會執行的,那麼0跟don't care會有什麼差異呢?
下面的Data hazard,6跟7的t4不會發生嗎?
問題有點多,再麻煩各位大大QQ
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謝謝A大,但是還是想問一下如果Add的MemRead=1會發生什麼事情呢?
因為Add不會用到Mem這樣會有關係嗎?
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※ 編輯: joeboy (42.73.88.28), 01/31/2017 23:57:43
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