Difference between revisions of "Loongson"
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'''Microarchitecture:''' | '''Microarchitecture:''' | ||
| − | + | * 64 bit | |
| − | + | * 9 pipeline stages | |
| − | + | * 4-issue Out-Of-Order Executive | |
| − | + | * 2 ALU, 2 FALU, 1 SIMD, 1 Load/Store Units | |
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'''ISA:''' MIPSIII | '''ISA:''' MIPSIII | ||
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Some new SIMD instructions: simmilar to MMX, using FPU for parallel fix-point arithmetic. | Some new SIMD instructions: simmilar to MMX, using FPU for parallel fix-point arithmetic. | ||
| − | An | + | An Execution bit: help OS to protect from buffer-flow attack. |
| − | |||
| − | |||
| − | |||
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| − | ===Devices based on this CPU === | + | === Devices based on this CPU === |
* [[Fulong]] | * [[Fulong]] | ||
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* http://www.lemote.com/upfiles/godson2e-user-manual-V0.6.pdf | * http://www.lemote.com/upfiles/godson2e-user-manual-V0.6.pdf | ||
| − | ==Loongson 2F== | + | == Loongson 2F == |
Loongson 2F is the latest processor in Loongson 2 Family. Also manufactured by STMicroelectronics. | Loongson 2F is the latest processor in Loongson 2 Family. Also manufactured by STMicroelectronics. | ||
| − | + | It is identical to the Loongson 2E with several improvments: | |
| − | *Higher Clock Frequence: 1.2GHz maximum | + | * Higher Clock Frequence: 1.2GHz maximum |
| − | *Advanced power control technology: less than 6 Watt under 1GHz in the same 90nm | + | * Advanced power control technology: less than 6 Watt under 1GHz in the same 90nm |
| − | *Intergrated DDR2 controller | + | * Intergrated DDR2 controller |
| − | *Intergrated | + | * Intergrated northbridge providing faster IO (compared with former PCI bus) with PCI-X 66 bus |
| − | *Smaller Packaging. | + | * Smaller Packaging. |
| − | + | === Devices based on this CPU === | |
| − | ===Devices based on this CPU === | ||
* [[Fulong2f]] | * [[Fulong2f]] | ||
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English version | English version | ||
* [http://www.loongsondeveloper.com/doc/Loongson2FUserGuide.pdf http://www.loongsondeveloper.com/doc/Loongson2FUserGuide.pdf] | * [http://www.loongsondeveloper.com/doc/Loongson2FUserGuide.pdf http://www.loongsondeveloper.com/doc/Loongson2FUserGuide.pdf] | ||
| + | |||
| + | == See also == | ||
| + | * http://www.st.com/stonline/products/literature/bd/13367.htm | ||
| + | * http://www.loongson.cn/ | ||
| + | * http://en.wikipedia.org/w/index.php?title=Godson | ||
| + | * [http://blog.360.yahoo.com/blog-t7XKGI8kebP22pOrg03O8w--?cq=1 My CPU is Loongson(Godson)!!!] blog | ||
| + | * http://www.cyrius.com/journal/2007/03/08 | ||
| + | * http://linuxdevices.com/news/NS5724036154.html | ||
Revision as of 09:35, 15 June 2009
Contents
This article is a stub. You can help by expanding it
Loongson 2E
Loongson 2E was designed by ICT (Institute of Computing Technology), a department of The Chinese Academy of Sciences, helped and manufactured by STMicroelectronics.
ST Generic Part Number: STLS2E02
Features
Microarchitecture:
- 64 bit
- 9 pipeline stages
- 4-issue Out-Of-Order Executive
- 2 ALU, 2 FALU, 1 SIMD, 1 Load/Store Units
ISA: MIPSIII
Cache: 64KB L1 date, 64KB L1 instruction, on-chip 512KB L2.
Clock Frequence: 600MHz - 800MHz.
TDP: 4 Watt at 700MHz
Integrated: DDR-333 memory controller.
Highlights
ST's Leading Edge 90nm process.
Some new instructions: Allow write to register directly without MFLO or MFHI.
Some new instructions: MADD.[S|D] MSUB.[S|D] NMADD.[S|D] NMSUB.[S|D].
Some new SIMD instructions: simmilar to MMX, using FPU for parallel fix-point arithmetic.
An Execution bit: help OS to protect from buffer-flow attack.
Devices based on this CPU
Processor documentation
Chinese version
English version
Loongson 2F
Loongson 2F is the latest processor in Loongson 2 Family. Also manufactured by STMicroelectronics.
It is identical to the Loongson 2E with several improvments:
- Higher Clock Frequence: 1.2GHz maximum
- Advanced power control technology: less than 6 Watt under 1GHz in the same 90nm
- Intergrated DDR2 controller
- Intergrated northbridge providing faster IO (compared with former PCI bus) with PCI-X 66 bus
- Smaller Packaging.
Devices based on this CPU
Processor documentation
Chinese version
English version
