X86 is the bottom instruction specification of computer, and the patent right is mainly in the hands of Intel. If other manufacturers want to design and manufacture x86 compatible CPU, they need authorization from Intel.
Zhao Xin inherited the patent cross-licensing between VAS and Intel, which made Zhao Xin avoid the potential risk of patent disputes with Intel and greatly promoted its later commercial promotion.
Extended data:
Related CPU architecture scheme:
1, Alpha: The advantage of choosing alpha for Shenwei chip lies in that most related patents of its instruction system have passed the protection period and can be used freely. However, the problem is that the current software industry's support for Alpha system is very weak. If you choose this system, you need to invest a lot of resources in software ecological construction, and it will take a long time to improve it.
2.MIPS: Godson, a famous company, chose MIPS instruction system, expanded MIPS instruction system, formulated its own set of standards, completely mastered the right to modify the instruction system, did not need to seek authorization from foreign companies, and made corresponding improvements according to domestic needs, so it had the best independent conditions.
3.arm: Both National University of Defense Technology and Huawei have chosen Arm system, which is widely used in smartphones and tablet devices, to develop CPU, because the software ecology of Arm system is quite mature, and the future development basically does not need the support of the state.
China Economic Net-Domestic CPU has come to a crossroads: Who will replace Intel chips?