HKSpot - Powered by Discuz! Board

標題: [硬件] FPU 係乜野來!? [打印本頁]

作者: XT 時間: 2006-3-8 14:29 標題: FPU 係乜野來!?

http://www.hkepc.com/bbs/viewthr ... page%3D1&page=4

#33

[IMG]http://www.hkepc.com/bbs/attachments_dir/ext_jpg/amd_kVXOY6CBGyun.jpg[/IMG]

作者: qcmadness 時間: 2006-3-9 18:34

Floating Point Unit

專計浮點數架

作者: XT 時間: 2006-3-9 20:22

引用:

Originally posted by qcmadness at 2006-3-9 18:34:
Floating Point Unit

專計浮點數架

浮點數有乜用

作者: qcmadness 時間: 2006-3-10 00:56

引用:

Originally posted by 真．飛鳥 at 2006-3-9 20:22:

浮點數有乜用

當整數 (1,2,3,4,5) 不能表示一個數時,
電腦就會用浮點數 (1.032 x 10^2) 來計......

作者: XT 時間: 2006-3-10 13:24

引用:

Originally posted by qcmadness at 2006-3-10 00:56:

當整數 (1,2,3,4,5) 不能表示一個數時,
電腦就會用浮點數 (1.032 x 10^2) 來計......

哦 ...

好似好少機會用 ...

作者: Totti 時間: 2006-3-10 13:27

引用:

Originally posted by 真．飛鳥 at 2006-3-10 13:24:

哦 ...
好似好少機會用 ...

super-pi

作者: XT 時間: 2006-3-10 13:58

引用:

Originally posted by Totti at 2006-3-10 13:27:

super-pi

.......................................................................................

作者: qcmadness 時間: 2006-3-11 04:25

引用:

Originally posted by 真．飛鳥 at 2006-3-10 13:24:

哦 ...
好似好少機會用 ...

除左office果d之外, 好多都要用FPU

Cornoe之前, AMD既FPU係高一等既

作者: trentcys 時間: 2006-3-11 22:34

Can\'t believe they are using onchip x87 as a feature....

作者: qcmadness 時間: 2006-3-11 22:38

引用:

Originally posted by trentcys at 2006-3-11 22:34:
Can\'t believe they are using onchip x87 as a feature....

我諗唔係x87果d

而家駛鬼x87

作者: trentcys 時間: 2006-3-12 18:50

引用:

Originally posted by qcmadness at 2006-3-11 22:38:

我諗唔係x87果d

而家駛鬼x87

係雞肋lor

好似x86咁...行內人點會唔知x86無論HW/SW都難設計. 不過邊個敢放棄

作者: XT 時間: 2006-3-12 18:53

引用:

Originally posted by qcmadness at 2006-3-11 22:38:

我諗唔係x87果d

而家駛鬼x87

x87 又乜野來

作者: qcmadness 時間: 2006-3-12 18:58

引用:

Originally posted by trentcys at 2006-3-12 18:50:
係雞肋lor
好似x86咁...行內人點會唔知x86無論HW/SW都難設計. 不過邊個敢放棄

Market-Driven

作者: qcmadness 時間: 2008-2-23 00:41

引用:

Originally posted by 真．飛鳥 at 2006-3-12 18:53:

x87 又乜野來

http://en.wikipedia.org/wiki/X87

作者: XT 時間: 2008-2-23 14:16

引用:

Originally posted by qcmadness at 2008-2-23 00:41:

http://en.wikipedia.org/wiki/X87

你兩年之後先來答番我

作者: qcmadness 時間: 2008-2-23 14:19

引用:

Originally posted by 真．飛鳥 at 2008-2-23 14:16:

你兩年之後先來答番我

原來果陣時我睇唔到你問

x87咪係用來計FP instruction的co-processor (e.g. 386DX + 387)
486DX開始入埋CPU入面, 一直到而家

不過而家用來計FP既, 多數用SSEx

歡迎光臨 HKSpot (https://bbs.hk-spot.com/)