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你说的74k,是atheros 7402?
是的话。那性能是龙芯的好。
ANTER 发表于 2009-12-11 21:56 
MIPS CPU 简单分类
分类:
- R2000/R3000
MIPS I Intruction set
- R4000
MIPS III Intruction set
-- MIPS32 4K
five-stage pipeline
32bit address and data paths
cache 16KB
4KE
4KC
4KF
-- MIPS32 24K
http://www.mips.com/products/pro ... t-cores/mips32-24k/
Release 2 of the MIPS32 architecture
nine-stage pipeline
8-stage pipeline
32bit address paths;64bit data paths to cache
programmable cache size,max to 64KB
-- MIPS 34KE - 多线程技术:5个线程
http://www.mips.com/products/pro ... t-cores/mips32-34k/
9-stage pipeline
32-bit address paths
64-bit data paths to caches and external interface
MIPS® MT: Support for up to 2 VPEs and 9 TCs
MIPS DSP ASE
Programmable MMU & L1 Cache size
-- MIPS32 74K
http://www.mips.com/products/pro ... t-cores/mips32-74k/
Superscalar dual issue pipeline with Out-of-Order Instruction dispatch
15-stage pipeline
32-bit address paths and 64-bit data paths to external interface
128-bit data path for instruction cache and 64 or 128-bit data path for data cache
4 instruction fetch per cycle
Combined Majority Branch Predictor using three 256 entry Branch History Tables (BHT)
8-entry return prediction stack
CorExtend user defined instruction set extensions
DSP ASE (application-specific extension) Revision 2
FPU, MDU, BIU, Programmable MMU & Cache sizes
17-stage pipeline,achieve speeds of up to 1 GHz when synthesized in a 65 nm process
-- 龙芯2F
看到网站上说是和MIPS74K是同一级别的。这是从网站找到的，没有更详细的了。
和MIPS 74K的对比，龙芯2F的参数：
MIPS 74k Godson2F
: 频率 1.04G 1G
: 工艺 65nm 90nm
: 面积 2.5mm 35mm
: 流水线 17级 9级
: 调度 乱序 乱序
: 发射宽度 2 4
: IPC 1.8 2左右
: L1 Cache 32k+32k 64k+64k
- R5000/R1000
MIPS IV Intruction set
-- MIPS64 5K/20K
R10000: superscalar;out-of-order
R12000/R14000/R16000:base on R1000; higher clock rate
R14000: DDR SDRAM
R16000: L1 cache
- R8000
first superscalar MIPS design
- Cavium cnMIPS
MIPS64 version 2.0: dual-issue,5+ stage pipeline,superscalar
Cavium specific instruction addditions
cavium-specific in-core coprocessor 2 security accelerator (CRC,HASH,3DES,AES)
cavium-specific interger multiply unit
------------------------------------------------
用过的几家：
Brecis MSP2xxx/MSP4000/MSP5000 -- 4Km
Atheros AR231x -- 4K
AR7100 --- 24K
AR91xx --- 34K
Broadcom 6348 --- 256M MIPS32 4Kc-compliant core
6358 --- 300M VIPER MIPS modules
470x --- MIPS32
5352e ---
5354 --- MIPS32
4716/4717/4718 -- MIPS32 74K, 11n SoC, 533Mhz
5355/5356 -- MIPS32 74K, 11n SoC include switch, 333Mhz
TI 1050/1060 --- MIPS32 4KEc
Marvell 88E6318 --- MIPS 5Kf,64bit
Realtek 8651 --- LX4180
8650B/8651B --- Lexra 5280 R3000
Infineon Danube
dual mips24k core(one with DSP ASE);
Ralink
RT2880 --- MIPS4KEc
RT3050/RT3052 --- MIPS24KEc |
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发表于 2009-12-15 23:13
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