- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄372537 > X86-64 x86-64 - Advanced Micro Devices. Inc. x86-64TM Technology White Paper PDF資料下載
參數(shù)資料
| 型號： | X86-64 |
| 英文描述： | x86-64 - Advanced Micro Devices. Inc. x86-64TM Technology White Paper |
| 中文描述： | 86 - 64 -高級微設(shè)備公司。公司86 - 64TM技術(shù)白皮書 |
| 文件頁數(shù)： | 10/12頁 |
| 文件大?。?/td> | 512K |
| 代理商： | X86-64 |
X 8 6 -6 4
T M
T E C H N O L O G Y W H IT E P A P E R
Page 10
access the first 4GBytes of virtual-address space. Standard x86 instruction prefixes toggle
between 16-bit and 32-bit address and operand sizes.
As with 64-bit mode, compatibility mode is enabled by the operating system on an individual
code-segment basis. Unlike 64-bit mode, however, x86 segmentation functions normally, using
16-bit or 32-bit protected-mode semantics. From the application’s viewpoint, compatibility mode
looks like a legacy x86 protected-mode environment. From the operating system’s viewpoint,
address translation, interrupt and exception handling, and system data structures use the 64-bit
long mode mechanisms.
Legacy Mode
When LMA=0, the processor is said to be running in legacy mode. None of the 64-bit features
are available and the processor operates as a standard x86 processor. Legacy mode is completely
compatible with existing 32-bit implementations of the x86 architecture. This includes support
for current technologies like segmented memory, and 32-bit GPRs and instruction pointer.
AMD 64-Bit Roadmap
Already performance-leaders for high-volume markets, AMD processors set a clear path for 64-
bit processor architectures. Key data and address paths are already 64-bits wide. The x86-64
architecture is designed to have minimal impact on processor die size and no impact on the
progression of processor clock speed. Future improvements in the processor core will accelerate
both 32-bit and 64-bit applications. Thus, high-performance systems using 64-bit capable
processors from AMD are planned to also be among the highest performing 32-bit systems ever
built.
AMD is currently collaborating with its key platform suppliers, operating systems providers, and
other technology partners for the x86-64 architecture. AMD plans to include 64-bit technology in
its next-generation of performance-leading processors code-named “Hammer” to establish an
initial base of 64-bit platforms by the end of 2001.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| X88064 | E2 Micro-Peripheral |
| X88064P | E2 Micro-Peripheral |
| X88064P-60 | E2 Micro-Peripheral |
| X88064PI | E2 Micro-Peripheral |
| X88064PI-60 | E2 Micro-Peripheral |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X86C64 | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:E2 Micro-Peripheral |
| X86C64P | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:E2 Micro-Peripheral |
| X86C64PI | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:E2 Micro-Peripheral |
| X86C64PM | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:E2 Micro-Peripheral |
| X86C64S | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:E2 Micro-Peripheral |
發(fā)布緊急采購，3分鐘左右您將得到回復。