參數(shù)資料
型號(hào): Alpha 21164
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: Alpha Microprocessor(64位微處理器)
中文描述: 阿爾法微處理器(64位微處理器)
文件頁數(shù): 11/115頁
文件大?。?/td> 846K
代理商: ALPHA 21164
Microarchitecture
11
Pipeline Organization
Figure 2 Instruction Pipeline Stages
HLO019
IC
0
IC
0
IB
1
IB
1
SL
2
SL
2
AC
3
AC
3
4
4
5
5
6
6
7
8
7
8
9
10
11
12
IC
0
IB
1
SL
2
AC
3
4
5
6
Integer
Operate
Pipeline
Floating
Point
Pipeline
Memory
Reference
Pipeline
Instruction Cache Read
Instruction Buffer, Branch Decode,
Determine Next PC
Slot by Function Unit
Register File Access Checks,
Integer Register File Access
First Integer
Operate Stage
If Needed, Second Integer
Operate Stage
Write Integer Register File
Arithmetic, logical, shift, and compare
instructions complete in pipeline stage 4
(1cycle latency). CMOV completes in
stage 5 (2cycle latency). IMULL has
an 8cycle or 9cycle latency. CMOV
or BR can issue in parallel (0cycle
latency) with a dependent CMP
instruction.
FloatingPoint Register
File Access
First FloatingPoint
Operate Stage
Write FloatingPoint Register File,
Last FloatingPoint Operate Stage
Dcache Read Begins
Dcache Read Ends
Use Dcache Data, Store Writes
Dcache, Scache, Tag Access
Scache Data Access Begins
Scache Data Access Ends
Fill Dcache
Use Scache Data
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