当前位置:网站首页>"If life is just like the first sight" -- risc-v
"If life is just like the first sight" -- risc-v
2022-07-06 14:36:00 【Lntan0】
mention RISC-V, One word we have to mention is Instruction set architecture (ISA).
that , What is meant by “ISA”,ISA It can be called CPU Soul , Sometimes referred to as “ framework ” Otherwise known as “ Processor architecture ”.
Above the ISA Made a detailed description , I won't repeat it here .
With instruction set architecture , Different processor hardware implementation schemes can be used to design processors with different performance . The specific hardware implementation scheme of the processor is called Microarchitecture (Microarchitecture).
RISC-V( English is read as “risk-five”), Is a new instruction set architecture .RISC-V The framework is mainly composed of several professors from the University of California, Berkeley 2010 The invention of . The reason why Berkeley developers invented a new instruction set architecture , Instead of using mature X86 perhaps arm framework , Because these architectures have been developed for many years , Become extremely complex and miscellaneous , And there are high patent and architecture licensing problems . therefore ,RISC-V Architecture is a new , Simple, open and free instruction set architecture .
Briefly introduce some CPU principle :
1. Classic five stage assembly line
Flow of an instruction : Fingering > decoding > perform > Visiting and depositing > Write back to
Simply mention a concept : Pipeline depth
Deeper and deeper assembly lines : Pursuing high performance
Shallower and shallower assembly lines : Pursue low power consumption
2.CPU Data access
About match
Competition questions : Based on hummingbird E203 RISC-V Intelligent recognition of kernel SoC Design and application system development
Content : Open source hummingbird based on xinlai Technology E203 Demo SoC(e203_hbirdv2) Expand , On the limited programmable logic platform, we build a..., which is oriented to the application field of intelligent recognition SoC, And then complete the actual application system development . It is required to build SoC In order to improve the overall performance of the system , The application system realized is innovative 、 Practicality and market application prospects .
Make complaints about it : I can't borrow & It's too persuasive to buy a board
(Nuclei MCU200T, The price is 2499)
(Nuclei DDR200T, The price is 4999)
Finally, with the support of Wang Xuechang in the Laboratory , Bought a development board
( Vinci pro 35T, The price is 1526)
Familiar with board , The biggest headache is still E203 soc Transplant the kernel to the board ( Online tutorials are almost 0)
The migration tutorial will be sent later
Sharing is only for learning and communication , I hope the big guys will not hesitate to give me advice 🥰
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