評論
打印
Okay, let's look at a sample problem.
好了，讓我們來舉個例子
Suppose we're given a computer with a 16-bit virtual address and a page size of 256 bytes.
假設一臺電腦擁有16位虛擬位址 分頁256字節
The system uses one-level page tables that start at address hex 400.
系統使用16進制位址400開始的一級代碼頁表
Maybe you want DMA on your 16-bit system.Who knows?The first few pages are reserved for hardware flags, etc.
也許可以在16位系統中使用直接存儲器存取，隨便吧 前幾頁必須留給硬碟分區
Assume page-table entries have eight status bits.The eight status bits would then be...Anybody?
如果頁表項有八個狀態位 會是哪八個呢… 誰來回答？
And I see we have our first surrender.Don't worry, Mr. Zuckerberg.Brighter men than you have tried and failed this class.
我看到了第一個逃兵 別灰心，扎克伯格先生 比你聰明的人也沒能答出來
One valid bit, one modified bit,one reference bit and five permission bits.That is correct.
1個有效位，1個修改位，1個參考位5個權限位 回答正確
Does everybody see how he got there?Mark?You Mark Zuckerberg? Yeah.Cameron Winklevoss. Hi.Tyler Winklevoss.
有誰知道這是怎么運算出來的嗎？馬克？你是馬克扎克伯格？ 對 卡梅倫文克萊沃斯 嗨 泰勒文克萊沃斯
Are you guys related?That's good. Funny.We never heard that before.
你們是親戚？很有眼力 有意思 還沒人這么問過
So, what can I do for you?Did I insult your girlfriends?No. You didn't. Actually, I don't know.
找我什么事，來替女朋友出頭？ 不是，不知道怎么開口
Yeah, we never asked. We should do that. No.We have an idea we want to talk to you about.
我們不太求人的 還是說吧 不是 我們有一個創意，想找你聊聊
You got a minute?You guys look like you spend some time at the gym.
有時間嗎？ 你們看上去練過幾下子
We have to. Why? We row crew.Yeah I've got a minute. Great.So, you ever been inside the Porcellian? No.
我們必須得練 為什么？我們是賽艇隊的 好，我跟你們走 太好了 你從沒去過坡斯廉俱樂部吧？ 沒有
You understand we can't take you past the bike room,because you're not a member.I've heard.
我們只能安排你到門廊，希望你理解 因為你不是會員 我聽說過
