Rebirth: I carry a desktop computer inside me

The fact that Duolong Shi Investment took the lead in obtaining 10% of the Series A financing of Maple Fire Technology with 50 million yuan quickly spread internally.

A foreign capital has recognized Maple Fire Technology and believes that its valuation has reached 3 billion, then they also agree.

By February 28, Canglang Capital and Morningstar Capital had successively participated in the Series A financing.

Each invested 150 million yuan, accounting for 5% of the shares.

The Series A financing allowed Maple Fire Technology (mobile phone) to obtain 600 million yuan in financing, which provided a strong impetus for the company's development.

After the financing, Maple Fire formed a board of directors.

Jiang Cheng served as the chairman and Mo Tianqing served as the CEO, specifically responsible for the company's operations.

After having money, Maple Fire Technology also dug up a technical vice president, Chen Weixing.

Previously, he served as a technical director in the blue-green factory, and has rich experience in mobile phone research and development.

And the new generation of mobile phones, Maple Fire Kind 2 has also been developed for research and development, Jiang Cheng looked at their design appearance drawings, felt that they were not particularly good, so they designed a few according to some good designs he saw in his previous life.

Like metal frames and 2.5D glass, these are all prepared by Jiang Cheng for Fenghuo's second and third mobile phones.

The research and development of mobile phone SOC chips is even more important.

More than half a year has passed, but this chip is still difficult to produce.

The good news is that the team led by Lin Feng finally designed a processor core with the RISC-V instruction set.

"President Jiang, take a look." Lin Feng's plaid shirt turned gray, his beard was a little long, and his hair was even more messy, but he was very excited at this moment, pulling Jiang Cheng to see their latest core.

Nowadays, the design is still only at the software level, and in the verilog code of the full manual design, Jiang Cheng has carefully reviewed the entire kernel design code.

Lin Feng introduced on the side, "The generation of kernel we initially designed supports the 64-bit RISC-V instruction set, adopts a five-stage pipeline, can run C and C++ language programs, supports memory reading and writing, bus, interrupts and so on. In terms of theoretical design, it can basically be comparable to ARM's A15.

While listening to it, Jiang Cheng simulated the results he had just designed into the internal computer.

Because it is still only the kernel, more as a decoding logic and execution unit, although the core design, bus design, debug module design, peripheral module design, etc. are initially completed, but it is still not enough.

A processor does not have only one core, but needs multiple cores, and also needs integrated memory, GPU, etc.

Jiang Cheng simulated the test in the internal computer.

After running the command test, it feels that the speed is still good.

It shows that this kernel, with the joint efforts of all R&D engineers, finally made a preliminary finished product.

This is a historic step.

And this core, Jiang Cheng estimates that it can reach the main frequency frequency of 1.6-2.0GHz.

After the simulation, Jiang Cheng also found several problems

, "You see, these instructions are called, there will be redundancy, the speed will be obviously slower, it should be code optimization or logic algorithms are not good." In addition..." Lin

Feng was surprised!

Mom, can you just take a look at this Iverilog compiled language to pinpoint the problem?

This President Jiang is really awesome.

After the test, sure enough, all the problems pointed out by Jiang Cheng existed, and they were not generally discoverable.

Immediately, everyone admired Jiang Cheng even more.

No wonder that being able to lead the team to produce an ISP chip is really a big bull.

"President Jiang, I obey you!" Lin Feng raised his thumb and praised.

Jiang Cheng only felt a strange smell rushing up, "Go and go, don't get so close, give you a holiday, give me a, cut my hair, and beard, you have to shave!"

Lin Feng smiled, "Okay, I'll go back to take a shower first, and after the revision is done in the evening, there are still many things to do later!"

"Not used at night. I will participate later, and we strive to design the SOC chip as soon as possible. Jiang Cheng nodded.

The core is designed, and then the entire processor architecture is arranged according to the design, and the HDL programs of these compilers are imported into the EDA design tool and converted into logic circuits.

Finally, the synthesized code of each unit is put into another set of EDA tools for circuit layout and winding.

This is the construction drawing of chip manufacturing.

The lithography machine will follow these drawings to apply the wafer.

In terms of the entire logic circuit, the analog experimenter in Jiang Cheng's body can play a key role.

Only some pity is that the simulated lithography machine in vivo is only a 45nm process, which cannot simulate the mobile phone SOC chip.

This SOC chip is benchmarked against the recently released Dragon 800, using the 28nm process technology.

To do it, we must be in the forefront, which is Jiang Cheng's requirement and goal.

However, there is no need to worry, at present, Jiang Cheng intends to study the submersion technology.

The lithography machine that secretly came out of Huaxin's international production workshop is a dry lithography machine with a 193nm ArF light source, and the semiconductor process node produced can reach up to 45/40nm.

However, Asmail's use of immersion technology and radical design for manufacturability (DfM) can move the process to less than 22nm, and even through multiple exposure and other technologies, it can reach 7nm!

7nm, that is already equivalent to the Kirin 980 and 985 technology used by Jiang Cheng in his previous life.

As for the technology, it's actually not complicated.

By adding an immersion unit to the original 193nm lithography machine system, ultrapure water was used to replace the air gap between the lens and the wafer surface.

Because ultrapure water has a refractive index of 1.44:1 with air at a wavelength of 193nm, the wavelength of the light source is shortened, thereby improving the lithographic resolution.

However, ultrapure water is something that Jiang Cheng is not sure if he can simulate it.

The computer simulations in the body are mainly electronic devices or materials that can operate electrons.

Other plastic, non-metallic materials, more of a model, have no practical use.

Jiang Cheng tried it and put his finger to the tap water.

Release biocurrent.

However, nothing happened.

Jiang Cheng estimated that such a liquid as ultrapure water could not be simulated.

But Jiang Cheng had an idea again.

We can't get ultrapure water, but in the internal computer, our authority is super big!

It's not like a physical device in the outside world that can't be easily adjusted.

Jiang Cheng can freely adjust and modify various materials and various circuits.

Even the light source excitation equipment of the lithography machine, Jiang Cheng felt that he could try to adjust it.

Who let you simulate coming into the lab?

In this laboratory, everything is simulated, and everything is decided by Jiang Cheng.

Isn't it necessary to reduce the wavelength, there is no ultrapure water, let's still plate him!