參數(shù)資料
型號: 21928
英文描述: Low-Frequency, Spread-Spectrum EconOscillator
中文描述: 的AMD - K6 - 2E處理器數(shù)據(jù)手冊3DNow?。考夹g(shù)手冊
文件頁數(shù): 22/72頁
文件大?。?/td> 845K
代理商: 21928
12
3DNow! Technology
Chapter 1
3DNow! Technology Manual
21928G/0—March 2000
For further information regarding code optimization, see the
AMD-K6
Processor Code Optimization Application Note
, order#
21924. This document provides in-depth discussions of code
optimization techniques for the processor.
For execution resources information on the AMD Athlon
processor, refer to the
AMD Athlon Processor x86 Code
Optimization Guide
, order# 22007.
The SIMD 3DNow! instructions for all processors are
summarized in Table 2 on page 14. The dedicated and shared
execution resources of the register X unit and register Y unit
are shown in Figure 5 on page 13. The execution resources for
some MMX operations, as well as all 3DNow! operations, are
shared between the two register units. For contention-checking
purposes, each box represents a category of operations that
cannot start execution simultaneously. In addition, the MMX
and 3DNow! multiplies use the same hardware, while MMX and
3DNow! adds and subtracts do not.
The 3DNow! performance-enhancement instructions for all
AMD processors are summarized in Table 3 on page 14. The
FEMMS instruction does not use any specific execution
resource or pipeline. The PREFETCH instruction is operated
on in the Load unit.
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