The Return of the Black Technology of Immortal World

Originally, the chip design was complicated, even if Yang Qing's brain was comparable to a supercomputer, it was not so easy to make it.

However, the Honghuang No. 1 designed by Yang Qing originally adopted the modular design concept. Various registers and the like are added module by module, and they are connected by software, so it is also the easiest to simplify.

Otherwise, if Yang Qing applies for an ARM public version and redesigns a chip, he will have absolutely no chance within a year or so.

Under Xiao Ai's scheduling, each robot did not have any unnecessary movements. In a short period of time, all kinds of raw materials have been prepared, and the production of the mask plate has already started.

Under the control of Xiao Ai, the electron beam processing equipment started to process the projection mask. The quartz glass was coated with a layer of chromium. After being processed by the electron beam, the chromium metal was dissolved, revealing the complicated circuit. This circuit is the pick-up The line that the laser from the lithography machine passes through.

Although the speed of electron beam processing of quartz glass is very fast, the modified lithography machine is different from other ones, and the number of masks required is more, so it will take some time before the chip processing can be officially started.

In order to avoid the trouble of entering the dust-free workshop, Yang Qing didn't even plan to go in. Anyway, with Xiaomei's management, it is actually better than his own control, because the employees inside are all robots, and the orders transmitted directly through electromagnetic waves are natural. Much faster than voice communication.

So Yang Qing found that he was suddenly idle, and only waited for a piece of source crystal to be produced, he applied an initial force again, and then continued to wait.

However, he didn't let himself idle for long. He held a source crystal in each of his left and right hands. He simply found a place and began to practice by himself.

Even with the bonus of a cheating device like Xiao Ai, the production of the mask version is still not fast enough. It was not until the afternoon that the mask version was completed.

In fact, the modified lithography machine can lithography 14nm chips through multiple exposure methods, but there is no 14nm domestic photoresist in China, and in the past year, the supply of chips has been in short supply, especially those above 14nm. For chips, it is difficult to get goods even if the price is increased, so the corresponding imported photoresist market is also hot.

Except for a few foundry companies in China, there is no source of 14nm photoresist at all, so as a last resort, Yang Qing chose the domestic 28nm photoresist, after all, it has a large quantity and is full.

In the afternoon, each mask plate was also installed in place, and the operation of the lithography machine production line officially started.

As the first eight-inch silicon wafer is pushed into the production line, inside the lithography machine,

The process starts right away.

Before the silicon wafer leaves the factory, it has gone through a series of processes such as polishing and coating. Therefore, after entering the photolithography machine, it is first dried, and then the photoresist is spin-coated.

Then, the mask plate is raised, and the photolithography machine starts to expose the photoresist on the wafer.

After multiple exposures, you can enter the next process, such as etching, cleaning, ion implantation, silver ion sputtering, cutting, packaging, etc., and finally come out with chips of three centimeters square, with BGA packaging below. of contacts.

Although the surface area is quite large, it is actually the area of ​​the metal roof after packaging. The core inside is only about 70 square millimeters, which has shrunk by nearly 90% compared to the original Honghuang No. 1.

A total of 400 chips were cut out of this eight-inch wafer. After being tested on the test bench, a total of 381 chips were qualified, which means that the pass rate has reached more than 90%.

This pass rate can already be officially produced. As for those unqualified chips, it is mainly due to the defects of the silicon wafer and the quality of the domestic photoresist. It is definitely not due to the production process. There is little room for improvement in the future. .

As for the design of the main board, after discussing the main board of Hong Huang No. 1 with Yang Qing, Xiao Ai was already familiar with it, and quickly designed a small main board according to the characteristics of this chip, which can be used in mobile phones. .

However, installing an LGA slot on this small motherboard is really nondescript. This is because considering that this is the first chip, it needs multiple plug-in verifications. In the future, it will still be directly soldered to the motherboard just like the mobile phone chip. .

Connect various interfaces to the motherboard, then take a mobile phone, connect the screen cable, connect an external storage, connect the power supply, and the mobile phone can officially work.

However, because the existing mobile phone operating systems are all aimed at the ARM instruction set, there is no way to directly install the Android or Banana operating system, and then test it in the same environment as them.

But just like testing Honghuang No. 1, Xiao Ai was still on the chip, running a virtual machine, and then installed the Android system.

This time, it is finally running in the same environment. Xiao Ai didn't bother to find a mobile phone to do a comparison test, so she directly found the most powerful Huolong 888 on the Internet. Among several models, the best one was obtained. Good test scores for comparison.

At the beginning of the test, a certain Tutu chip had a running score. This chip, which has not had time to be named, directly surpassed the Huolong 888 by 80%. This is no longer a comparison, but a crushing.

Then there is the game test, "Yuan Xian", the mobile phone using Huolong generally has a stable frame rate of around 60 frames, but this chip, its frame rate directly broke through 120 frames, which is also on the 2K screen. Now, it is already comparable to computer chips.

Moreover, on the Huolong chip, the common phenomenon of overheating, down-frequency and frame-locking basically does not exist, because it also inherits the cold rune on Honghuang No. 1. Even if it is running at maximum power, its temperature has never exceeded 40 degrees.

In fact, the test of the chip has ended here, and it can be confirmed that even if most of the transistors are castrated, its performance is still not comparable to that of ordinary mobile phone chips.

With its existence, VR devices can directly get rid of the shackles of mobile phones and computers, and can completely exist as an independent game console.

"Master, the test is basically completed. Next, we will conduct a 24-hour roasting machine, as well as tests in hot and cold environments. What's your opinion?" Bai Ershi asked, standing in front of Yang Qing .

Yang Qing opened his eyes and glanced at the various data displayed on the tablet that Bai Ershi handed over.

In fact, it is best to be on the spot. You can directly infer its lifespan through the carrier migration inside the chip. However, according to the experience of using the Honghuang No. 1, it should be extremely stable.

"Repackage the chip according to the motherboard used on the VR device, and start production!"

After listening to Yang Qing's words, Bai Ershi turned around and left, but he didn't go to the dust-free workshop, but went to work, because Yang Qing's words had already been transmitted to Xiao Ai's main server along with her electronic cochlea.