Shenhao Black Technology Network Developer

Chapter 118 118. The perfect ending

After lunch, Lei Luo and Li Jiaxin walked out of the cafe. Her car stopped and watched Li Jiaxin open the door elegantly, sit in the main driver, then open the window of the co-driver, wave goodbye to Lei Luo, and leave.. .

Lei Luo hurriedly returned to the hotel room, washed his face, and exchanged several accelerators in the system mall. Thinking that the points might be taken away by Schmidt at any time, Lei Luo quickly took a look at the points mall and found some things that might be used later, and exchanged the remaining points…

Lei Luo first used the accelerator in mp3 chip design and PCB board design, which should speed up the development and advent of mp3! This is what he thought about in the cafe before Li Jiaxin arrived, through mp3, to obtain a large number of users.

—

Outside the office of the chairman of UST on the 12th floor of the 12th floor of the Jinggu Building, Lisa glanced at the closed door suspiciously, and walked to the next office.

Lisa hadn’t seen Lei Luo for several days, and asked Wu Ying, but he didn’t even ask three questions. But this does not affect her mp3 chip design and PCB board design, because she only needs a computer with an EDA software installed on it.

After Lisa walked into the office, she turned on the computer, clicked on the EDA software, and started the design and development of the mp3 chip. While waiting for the EDA software to start, Lisa reviewed the process of chip architecture selection:

First of all, the chip design must choose the chip architecture instruction set to be used. At present, there are a total of Int’s X86, ARM, MIPS, RISC and Beta architectures.

Lisa recalled the characteristics of these chip architectures:

The characteristic of the X86 chip architecture is that each instruction of the program is executed serially in order, and each operation in each instruction is also executed serially in order. The advantage of sequential execution is that the control is simple, but the utilization rate of each part of the computer is not high, and the execution speed is slow…

The instruction format and length of the RISC chip architecture are usually fixed, and the instructions and addressing methods are few and simple. Most instructions can be executed in one cycle…

MIPS…

ARM…

Beta…

What makes Lisa depressed is that Lei Luo specified RISC, and Lei Luo also expanded on RISC. He defined the expanded instruction set as the V version, and the entire chip architecture, Lei Luo called RISC-V , This is something Lisa has never seen before.

No wonder Lisa was so depressed. The RISC-V instruction set appeared in 2010 and was exchanged by Lei Luo from the points mall, so it is normal that Lisa has not seen it.

Lisa used to fight for reasons, but Lei Luo said it plausibly: “The RISC architecture is free, and the others need to be authorized by the relevant company, and RISC-V is encapsulated and extended on RISC, and its functions are no weaker than others. Business structure”

Lisa also pointed out that RISC-V is a new chip architecture instruction set, does EDA software support it? Lei Luo slapped her face again and directly clicked on the EDA software to show her. Sure enough, she supports RISC-V and supports all-round development, design, and simulation. Lisa’s face turned red with choking.

Lisa looked at the RISC-V instruction set for a day yesterday and was dizzy, but today she seemed to be blessed to her heart, and she was beaten. She has clearly remembered all the RISC-V instruction sets, and she has memorized it backwards. What’s the situation? Is he really a rare genius in the chip design industry in a century?

Or inherited the talent of his father Qiao Busi? But why didn’t you find it before? Maybe it’s accumulated accumulation, it just started to explode today!

RISC-V Lisa was planning to spend a month to study, but now only a few days, especially today, suddenly crossed this hurdle. Then Lisa will be familiar with the rest.

Chip design is divided into front-end logic design and back-end physical design. The relationship between the two is like the relationship between a script and a movie.

The audience finally sees the movie. They don’t know the existence of the script. However, the movie is based on the script by adding elements such as images, sounds, characters, and scenes to form a whole.

The front-end logic design must first be divided into different modules according to the function of the chip, designed separately, then integrated, and finally tested using the simulation function of the EDA software;

The back-end physical design is based on the results of the front-end logic design, combined with the standard cells, macro cells, and IOPad library files provided by the chip manufacturing plant, to design the physical cells, and finally perform simulation tests in the EDA software.

According to Lei Luo’s needs, the main components of the mp3 chip include: MCU, audio decoding DA conversion, DSP digital signal processor, audio amplifier, power management, USB, display interface, memory interface…

Lisa is ready to start the logic design of the MCU today…

Several hours passed, Lisa stretched her waist, moved her neck, and finally finished…

When this thought popped into her mind, she was taken aback!

MCU is a heavyweight module in the entire mp3, which is equivalent to the CPU of a PC computer. In the initial discussion, Lisa even felt that the MCU is a single chip, which would be simpler.

However, Lei Luo insists that the two heavyweight modules of MCU and audio decoding and DA conversion must be implemented in the mp3 chip together. Although the difficulty increases, it is more convenient for users to use the mp3 chip. Lei Luo’s idea is to sell chips in the end.

“But now it took me a few hours to complete the logic design of the MCU? It seems that the ancestral tomb is really smoky, and the character has exploded.” Lisa was intoxicated and paralyzed, and she was getting better. ..

“In this way, the entire chip design work can be completed in one month, which is much earlier than the originally expected three months. It seems that Lei Luo needs to be rewarded. I wonder if he will give it to me?” Lisa couldn’t help thinking triumphantly.

—

“Ah~Sneeze”, Lei Luo sneezed out, I don’t know who is thinking about him again.

Lei Luo has to deal with DEB’s follow-up matters. At any rate, he has invested 100 million meters of gold, and he has to compete with SUM in the future.

Picking up the napkin on the table and wiping it, Lei Luo sent an email to DEB’s current CEO Thomson, recommending MET, and briefly introduced the 3D-based EDA software, which should greatly improve DEB’s PC computer chip. The speed of research and development.

Lei Luo gave a special suggestion that for the PC’s CPU chip to be listed as soon as possible, it is recommended to work overtime, and introduced in detail the corporate overtime culture in China…

Lei Luo was worried, and used an accelerator to develop DEB’s PC chip. With the help of the power of the system, accelerate…

Lei Luo thought about it, and searched for the PC’s CPU in the system mall. He didn’t see the beta chip architecture-based, but he only saw SPAC, POWER, Int and other PC CPU chips, not beta.

—

In the CEO’s office of Jinggu’s DEB building, Thomson’s seat sits with the company’s beta chip research and development director, who is trying out MET’s latest EDA software.

“How is it?” Thomson asked anxiously from the side.

“This software is very advanced, and the most important thing is that it integrates a large number of existing chip design schemes as templates, which can greatly improve the efficiency of designers,” said DEB’s Beta Chip R&D Director.

“You see, there is actually an X86-based CPU chip design here. Of course, laymen can’t see it. This greatly saves our development time.” Beta Chip R&D Director said proudly.

“How long will it take?” Thomson didn’t care about it, he just had to know the final result.

“3 months, right?” the R&D director said uncertainly.

“I have to tape out and do hardware testing. Time is a bit tight,” Thomson couldn’t help muttering to himself. After the chip is designed, it needs to be taped out by the chip manufacturer to verify the design scheme and conduct small-scale trial production. The filming time is also very long, usually about a month.

“How can adding designers speed up the progress?” Thomson asked.

“This is already the manpower arranged at the fastest speed. If you add more personnel, the development efficiency will decrease due to the increase in communication costs.” The R&D director gave Thomson a strange look. This was discussed before. what!

“What about overtime?” Thomson couldn’t help thinking of Lei Luo’s suggestion. In the United States, especially in a large and established company like DEB, everyone’s effective working time is actually only 6 hours a day, so Lei Luo suggested to work overtime, 3 hours a day, and another day on weekends. Working hours Can double.

“Working overtime?” The R&D director was taken aback? When does DEB have to work overtime? Isn’t it already very hard for everyone to work 6 hours a day? This is a big violation of the company’s corporate culture!

“Yes”, Thomson has made a ruthless statement. Even if he becomes a public enemy of the entire company, he will do the same, because the PC’s CPU chip does not come out within three months, and the 1.6 billion funds are likely to be withdrawn, which will lead to the DEB stock price. The sharp drop greatly affected the subsequent development.

“2 months,” said the R&D director gritted his teeth.

“Well, waiting for your good news,” Thomson finally smiled.

—

After Lei Luo’s email was sent, he subconsciously took a look at the system mall. The results of the CPU of the PC he searched just now were still there. The CPU chips of PCs such as SPAC, POWER, Int, etc., but he felt a little different… .

“Where is the difference?” Lei Luo took a closer look. It turned out that there was one more page. Before, there was only one page of search results, but now there are two pages. He quickly clicked on the second page, and the Beta chip architecture CPU was listed. …

Lei Luo thought about it carefully, stroked it, and finally figured it out.

Judging from the search results of the system mall, even with the DEB change, no PC computer CPU chip based on the beta architecture came out in the end, but after Lei Luo sent the email, a dramatic change took place. PC computers based on the beta architecture The CPU chip is out!

This shows that although the previous changes in DEB have reversed the direction of DEB’s business, it still cannot reverse the situation. Fortunately, Li Jiaxin’s reminder caused Lei Luo to send the email, which caused something to happen inside DEB, which led to the final success!

Lei Luo really wants to hug Li Jiaxin and kiss him, otherwise his 100 million meters of gold may be a problem! In this way, DEB should be able to gain a foothold, so SUM should be uncomfortable? Lei Luo couldn’t help having fun.

Lei Luo thought for a while, and then used an accelerator to accelerate the work of the [RF chip based on CMOS process] researched by Professor Gullit.

If this research can make a breakthrough, then all subsequent functional phones will use this RF chip, and they will become users of Lei Luo! In the era of smart phones, it is a few years later, and Lei Luo is not in a hurry!

So far, Lei Luo has used a total of three accelerators to accelerate three things: the development of mp3 chips, the development of DEB PC chips, and the research of radio frequency chips based on CMOS technology. These things are the harvest of this trip to Jinggu. 1. It is of far-reaching significance and great influence to Lei Luo’s subsequent development!

In this way, Lei Luo has the possibility of surpassing Schmidt in terms of points. With more points, he can do more things, strengthen his own strength, and protect himself and his family well. If the jackal comes, he can do more. Give it a kick!

If the software is not good, then the hardware will make up, and the trip to Jinggu will be the perfect ending!

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