[理工] [計組]-memory

看板Grad-ProbAsk作者luckyburgess (心安即自在)時間16年前 (2010/02/10 23:53)推噓8(8推 0噓 1→)

留言9則, 5人參與討論串4/6 (看更多)

想請問下面這題 : Consider a logical-address of 2048 words each,mapped onto a physical memory of 64 frames. Please answer the following questions assuming that the smallest memory allocation unit is one byte (c)Assuning a 2-level page table is used and the first-level table has 32 entries, what is the minimal amount of memory (in bytes) required by the page tables? 手邊的答案為 : level-1 : 2^5*(3+6(for L2))= 32*9 bit= 36 bytes level-2 : 2^6*(3+6(for physical address)) = 64*9 bit= 72 bytes total= 36 bytes + 72 bytes = 108 bytes 想請問它這樣解對嗎?? 對這種題目好頭痛orz 麻煩高手解答一下感謝!! -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.134.213.201

推

polomoss

02/10 23:56, , 1^F

02/10 23:56, 1^F

推

lovefo

02/10 23:59, , 2^F

02/10 23:59, 2^F

推

polomoss

02/11 00:04, , 3^F

02/11 00:04, 3^F