Putting aside how the big guy Chen was anxious for the time being, after Li Xuan found that his eldest brother was much more mature than before, he relieved himself to hand over the follow-up of the matter to him.

The YÀN Office of DFE and the YÀN Office of DFE at CUHK have been officially launched and are accepting applications. Of course, in addition to accepting applications, the real yàn room will also release a series of targeted scientific research projects according to the commission of Dongfang Electronics.

The first research project commissioned by DFE was on the design of the MOS6502 processor. Dongfang Electronics Co., Ltd. has just reached an agreement with MOS Technology Co., Ltd. of the United States, and after paying a licensing fee, it has successfully obtained the in-depth authorization of all the patents of the 6502 processor, which can be based on the MOS6502CPU to develop a more suitable CPU for itself.

Dongfang Electronics' commissioned project is to further optimize the design of the core based on the original 6502 CPU, so that the new processor is more suitable for game running. This project was taken by Dr. Cai Kang, that is, when Li Xuan went to Professor Zhao's weekend salon for the first time, the black thin man with a middle-parted haircut, his design plan was immediately noticed by Li Xuan, and it became the first project to open in the two real yàn rooms.

The 6502 processor was the one used in the first generation of the arcade board of Oriental Electronics, but it was not a processor designed specifically for gaming. Dr. Tsai's new solution, while retaining the 6502 CPU core, integrates a series of peripheral components suitable for game running, including an interrupt controller, a memory management unit, a timer, an eight-bit parallel I/O port, and a programmable sound generator.

The new processor has 64KB of logical addressing space and 2MB of physical addressing space. Since the 6502 is an octet processor, the internal registers are also eight bits wide, while the address bus is a bit wider. Therefore, in order to access the entire address space, Cai Kang specially designed a segmented addressing mode for the new processor, using a memory management unit to divide the memory into multiple 8KB segments.

As for the direct integration of a programmable sound generator in the CPU, the subsequent design of the gaming motherboard can directly eliminate the sound effect chip, which can further reduce the cost of hardware.

Cai Kang's design plan has many commendable points, which is also the reason why Li Xuan likes it at a glance. Li Xuan also learned about Dr. Cai's professional ability through this plan, such a talent Dongfang Electronics will naturally not miss it, and the relevant departments of the company will have a detailed understanding of Cai Kang's situation and make a detailed poaching plan for his needs.

Dongfang Electronics' scientific research capacity at this stage is almost zero, and all the declared topics submitted to Dongfang Electronics after the preliminary screening of the two real rooms need to be checked by Li Xuan personally, and he urgently needs to rapidly expand the company's scientific research team.

Hong Kong is short of electronic talents, and the existing outstanding talents are basically concentrated in the three institutions of CUHK, HKU and Polytechnic. The company has begun to look beyond Hong Kong, with a focus on four locations: Taiwan, Singapore, the United Kingdom and the United States.

Due to the small size of Hong Kong, the electronics industry has only risen rapidly in the last four or five years, and many Hong Kong students who were interested in engaging in the electronics industry in the early days could only go out to seek development. However, they may not be able to adapt to Cantonese-speaking food and Cantonese-speaking people in Mandarin-speaking Taiwan and Singapore, as well as English-speaking Americans and Britain.

If there are companies in Hong Kong that are willing to provide the same treatment and development conditions, I believe that there are Hong Kong engineers who are willing to return to work in cities that they are more familiar with and friendly to. These tasks are being carried out in an orderly manner by the personnel department and the public relations department of Dongfang Electronics Company.

Recently, Li Xuan has focused most of his energy on a RICS (Reduced Instruction Set) development project team established in cooperation with Professor Zhao Weiming, the director of the real YÀN office of Dongfang Semiconductor. Before returning to Hong Kong to teach in the early 70s, Professor Chiu was involved in the development of RCA1802, which is known as the originator of RICS processors, and was no stranger to the concept of RICS that had just been proposed in recent years.

RICS (Reduced Instruction Set) is relative to CICS (Complex Instruction Set). Since the birth of electronic computers, after decades of modification and generational development, their instruction sets have become larger and larger, and the design of CPUs has become more and more complex in order to realize these instruction operations.

However, statistics show that most of the operations that occupy the CPU and other computer resources are the common simple instructions that account for a small proportion of the instruction set, and the probability that the complex instructions that account for the majority of the remaining proportion are actually used is very small, which also causes the utilization rate of complex structures designed for the CPU to be very low.

Faced with this situation, computer experts began to study the necessary simplification of the instruction set, so that each instruction can be simplified and normalized, and the complex operation of the computer can be realized by executing a series of continuous, simple, and densely coded instructions, so as to replace those complex instructions in the instruction set that are rarely used, so as to simplify the design complexity of the processor.

In his previous life, Li Xuan's main job was a designer of the underlying program of embedded systems, and the most familiar instruction set architecture was Arm, which is one of the most popular RICS architectures in the 21st century.

The number of devices equipped with the ARM chip architecture is 25 times that of Intel. 99% of the world's smartphones and tablets are based on the ARM architecture. About 4.3 billion people, or 60% of the world's population, touch a device equipped with an ARM chip every day.

However, this instruction set architecture, developed by the British company Acorn, survived unusually wolf bèi and hardship in the early years. When Acorn first developed the computer, it asked Intel for technical information about 80286, but the other party refused, so it decided to develop a new low-cost processor.

In 1985, the ARM1 was released, the structure of the ARM1 was very simple, with only 25,000 transistors, and the following year, an improved version of the ARM2 also came out. ARM2 is a 32-bit processor with an integrated 30,000 transistors and an operating clock of 8MHz. But its computing power is better than that of the 80286, which integrates 130,000 transistors and has a maximum clock frequency of 20MHz.

But not many people paid attention to this new but destined to go down in history at the time, and all eyes in the industry were focused on the 80386 processor released on October 17, 1985. Although the performance of Acorn's ARM2 far exceeds that of the 16-bit 286, it is very shabby compared to the same 32-bit 386 processor, which has not caused a trace of waves for Intel.

By the time Acorn launched ARM3, Intel's 80486 had already been launched, and the performance of the two was still not much comparable. Acorn, mired in financial crisis and technical bottlenecks, did not have a real opportunity until 1993. TI (Texas Instruments) was convincing Nokia, an unknown Finnish communications company, to join it in the fledgling mobile market.

At that time, TI had already achieved a leading position in the DSP field, but was not familiar with the CPU business, and it chose Acorn among the few companies that could be manipulated.

It was with the strong support of TI that Acorn successfully developed the ARM7, the most important processor core since the company's founding, in 1993. ARM7 has very low power consumption, is suitable for handheld applications, and the manufacturing cost is also very cheap, which is convenient to expand the market quickly.

The ARM7 is fully in line with Acorn's original design philosophy of "low-cost, low-powerandhigh-performance". This philosophy also coincides with the needs of smartphones in the 21st century, but it was imposed on Arm by Intel at the beginning.

It is precisely in order to avoid the unshakable supremacy of Intel's 80x86 in the CICS field, Acorn can only choose the RICS technology that can implement a relatively high-performance processor chip with fewer chip resources and fewer developers.