[問題] 98交大計組第三題

看板Grad-ProbAsk作者 (好恐怖)時間16年前 (2009/03/18 13:44), 編輯推噓1(1推 0噓 4→)
留言5則, 2人參與, 最新討論串1/1
Ａtwo-way set associative cache with 2-word blocks and a total size of 16 words. (using LRU replacement) 假設 word address : 16 binary address: 010000 則 他的 block address 為多少？ tag 跟 index 又是幾bit呢？？？ -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 218.211.12.224
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03/18 13:48, , 1F
1 bit offset in block，block address = 01000
03/18 13:48, 1F
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03/18 13:48, , 2F
16 words → 8 blocks → 4 set，所以index為2 bit
03/18 13:48, 2F
推
03/18 13:48, , 3F
block offset 1 bit,block address 0100,index 00,tag 01
03/18 13:48, 3F
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03/18 13:49, , 4F
5 bit address減掉index 2 bit，所以3 bit tag
03/18 13:49, 4F
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03/18 13:49, , 5F
打錯,block address 01000,index 00, tag 010
03/18 13:49, 5F
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