Zheng Nan handed over the streamlined research based on the MS6502 chip to Zhou Minde, and Zheng Nan told Zhou Minde that MS6502 is currently a priority and other research projects can be suspended and postponed.

Zheng Nan's requirements are also very simple, no need for the original CPU function, no need for too much independent computing power, only need to have the ability to read pictures and sounds like VCD chips, but the performance requirements are higher than VCD chips.

"Especially when it comes to receiving signal commands and giving feedback in real time!" Zheng Nan emphasized.

Although it is the same as reading the storage screen and sound, but the VCD is just a simple playback function, and the most human intervention is to fast-forward and rewind or select tracks, but the game is different, the player has too much randomness and uncontrollability, which requires greatly enhancing the performance of the chip.

Otherwise, if you want to continue to use the type of VCD chip, it's like letting a three-year-old child do high math, and you don't have that ability.

At the same time, this chip must be attached to the current production capacity of 65 lithography machines.

In fact, Zheng Nan was a little embarrassed to mention these requirements, thinking that he was not too much, and he also required performance and the process not to be too harsh, which was simply a horse to run and not to eat grass.

Unexpectedly, Zhou Minde naturally nodded and said that there was no problem: "The MS6502 was originally designed as a real computer-grade CPU, and there is considerable redundancy in its performance design, so there is a lot of room for operation."

Of course, Zhou Minde also suggested Zheng Nan: "But it is best not to relax the promotion of the process, after all, only more advanced process technology can produce chips with better performance, and to be honest, the millimeter-level process can no longer keep up with the times."

Zhou Minde said it more tactfully, but Zheng Nan knows very well that in this era when the chip process has entered the nano field, the millimeter-level process is basically a waste, if it is not for the first-generation VCD chip is improved from the LD machine chip, plus the assistance of other regulators, even the VCD chip cannot be millimeter-level.

After leaving the semiconductor laboratory, Zheng Nan asked Li Xing if his current lithography machine could achieve an 18-micron process.

Li Xing's affirmative answer is yes: "Although the 65 lithography machine is a technology more than 20 years ago, it can still achieve a theoretical 1 micron process production."

After hesitating for a moment, Li Xing still said, "I think the problem in front of us now is not whether we can do 18 micron processes, but the problem of yield."

Li Xing told Zheng Nan that according to the radio factory's non-stop shift production mode, it was theoretically possible to produce more than 10,000 chips a month, but the radio factory never exceeded the output of 2,000 chips.

Li Xing said that he trusted Liu Gong's character, and he believed that this was not intentional by the radio factory, but the disadvantages of the contact lithography machine were too obvious.

"Since the 65 lithography machine is essentially a projection exposure, he needs to completely cover the photomask on the photoresist, which includes the baking temperature control, the amount of coverage and illumination, etc., there are too many variables, and even a small deviation in the middle can lead to the scrapping of the entire silicon wafer." Li Xing said.

As in later generations, the failure to advance the high process is not due to manufacturing technology, but in the final analysis, there is still a lack of better lithography machines.

"I know this, then we can try to lift the photomask from the photoresist and try it, didn't you say that the new generation of foreign lithography machines are doing this?" Zheng Nan asked.

Li Xing smiled bitterly: "Factory director, this will not work, because the light does not travel in a straight line."

Li Xing told Zheng Nanguang that he has wave-particle duality, and that perhaps the light in the eye looks like a straight line, but when the light passes through the narrow slit, it shows the diffusion characteristics of water ripples.

"To put it simply, after the light passes through a narrow slit of one micron, it will immediately expand to two microns or even larger, and even the higher the distance of the photomask, the greater the diffusion range, so that it is not as fine as the original manufacturing process."

Li Xing also said that when light passes through several adjacent narrow slits, it will also interfere with itself, resulting in more blurred imaging.

Zheng Nanfu forehead, it seems that his understanding of lithography machines and the chip manufacturing industry is still shallow, but he didn't think about it

It's just a process advancement, and it actually involves the wave-particle duality and double-slit interference experiment of light that drove Einstein's boss crazy, which is something that even a big guy of Einstein's level can't do.

To put it bluntly, it is the contact lithography method, and the yield rate cannot be guaranteed; However, if the photomask is lifted without contact with lithography, the accuracy cannot be guaranteed, and it is impossible to have both fish and bear's paws.

Originally, Zheng Nan was still very ambitious, thinking that he could easily make a lithography machine like the protagonists of those reborn online articles.

Now not to mention the deep ultraviolet extreme ultraviolet lithography machine of later generations, just a wave-particle duality of light can easily jam yourself, thinking about the online articles that you once read that are easy to build lithography machines, it is really completely ignorant of optical systems and even the most basic optical chip knowledge!

Isn't this day delaying his rebirth in vain?

Zheng Nan wanted to scold his mother.

Zheng Nan did not give up: "So Director Li, our top priority now is to buy a new foreign lithography machine, do you refer to their design ideas?"

Li Xing nodded and said, "But it's not absolute, because before the lithography machine project was launched, I heard that Yandu had already bypassed the wave-particle duality and double-slit interference characteristics and came up with the design idea of the projection lithography machine.

Archaeological research.

Regarding Li Xing's words, Zheng Nan's mind suddenly popped up with this word that was often used to ridicule on the Internet in later generations, and now Zheng Nan actually has a profound immersive experience.

Good guys, how much advanced technology have these electronics factories given up in order to simply pursue efficiency.

"Anyway, Director Li, your task now is to first get the technical solution for the production of 18-micron chips with contact lithography machines, no, let's use all the remaining lenses that were originally used as backups, build a few more lithography machines, and make up for the quantity." Zheng Nan said.

This is no way, Zheng Nan trusts Zhuang Wei's technology, as long as these lenses are not artificially damaged, it is no problem to use them for at least half a year.

Half a year later, Zhuang Wei's superfine grinding machine arrived, and the new generation of lenses is hard to say, but at least he can mass produce the lenses of the 65 lithography machine, and there will be no problem.

As for the design drawings and materials of the next-generation non-contact lithography machine, Zheng Nan can only think of another way.

Li Xing nodded solemnly, saying that the current difficulty of lithography lies in the manufacture of photomasks: "However, I have already thought of a plan for the production of more elaborate photomasks, and I will conduct a few rounds of demonstration, and it will definitely be able to catch up with the production task of the MS6502 chip."