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The bug of the Pentium microprocessor stems from Intel's solidification of the multiplication table on the chip in order to improve performance.

This would have been a good design, but 5 of the 2048 items in the multiplication table were wrong, resulting in incorrect results in some rare floating-point arithmetic scenarios.

The situation is similar to that of an abacus master, strategizing and being invincible, but he just remembered a few words of the mantra wrong.

To give you an example, when you remove the 4195835 with a numeric 3145727, the calculation result starts from the end of "1.333", and there is a large error.

A professor of mathematics in the United States encountered a puzzle when enumerating prime numbers through a computer -- how could a high-end RISC computer using a Holder microprocessor and a mid-range CISC computer using a Pentium microprocessor have the same mathematical algorithms being different?

After some tossing, he confirmed that the Pentium microprocessor had a chip defect and sent an email to Intel to report it.

In fact, Intel has discovered this bug much earlier.

According to one engineer, it takes about every 9 billion long division operations to result in one error.

To translate this data into a more visual statistical measure, the average failure interval is about once in 700 years.

THE CONCLUSION FROM THIS IS THAT THE BUG IS ALMOST IMPOSSIBLE TO HAPPEN - BUT THE REALITY IS THAT IT IS STILL DISCOVERED, AND SOME PEOPLE CLAIM TO HAVE ENCOUNTERED IT MUCH MORE OFTEN.

Intel has been slow to deal with this matter, even a little stupid, or it would not have given a prevarication excuse with an average failure interval of 700 years.

Don't forget, we're in the age of the internet. It can lift you up to the sky, or it can call you a dog – Intel's arrogance has led to overwhelming condemnation from the virtual community. So much so that in the real society, professional computer magazines such as "BYTE" and highly influential media such as CNN have carried out comprehensive reports.

This bug is in the scope of the product, basically covering the 0.8 micron process and 0.6 micron process, the operating frequency below 120MHz Pentium microprocessor, can be said to be a serious disaster.

Intel, which has many reasons for prevarication, does not matter if its reputation is stinky, it also affects the personal computer industry, scaring many customers into not daring to buy computers that use Pentium microprocessors, or even the entire Intel family of microprocessors.

You know, in the specific daily application, the operating system's built-in calculator, spreadsheet software, etc., will call the built-in instructions of the CPU, if the financial statement unfortunately encounters this floating-point operation BUG, then the problem is not easy to say.

I have to say that the current Intel is really not flattering in terms of public relations, in addition to being judged by users, the media, etc. from the commanding heights of morality, it has also attracted complaints from the industry.

Gain, the timing of this crisis, is so annoying.

NC doesn't care what the actual product is, but at least in terms of momentum, it poses a visible threat to the PC, and Fangyuan's Holder product line is oriented to the middle and high-end, and the Pentium product line is the main force to meet NC and compete for market share - now Intel has dropped the chain, which is not a dilemma for everyone.

In this case, Mr. Richest Man issued a rare alliance order to gather the major hardware and software manufacturers of the personal computer industry in Cupertino to discuss how to clean up this unprepared mess -- not to give Larry Ellison a chance to talk about it and NC to take advantage of it.

Tang Huan's attitude is very clear, there is no other solution, only to recall the product - now it is no longer a problem of the average failure interval of 700 years, but the outside world's impression of Intel, confidence in the product, there is a crisis.

The reason is there, it's like buying a product online in the original time and space, except for the damaged packaging and the suspicion of second-hand goods, there is no problem, you see what the customer says.

Intel CEO Andy? Grove also saw the current situation clearly, but he still couldn't get over that hurdle in his heart.

In a small-scale meeting, Andy? Grove said to Tang Huan with a bitter face: "If the product is recalled, the related financial loss may exceed 500 million US dollars." ”

John Chambers of Fangyuan Company interjected dissatisfiedly: "You see Intel's economic losses, but you don't want to think about how much time it takes and how many opportunities are missed in the PC industry facing NC challenges to just complete the hardware replacement and replace the Pentium microprocessor with bugs?" ”

Andy? Grove's temper is notoriously hard, but now it's really too unreasonable, so he can only be silent.

"No one wants this, everyone wants to make money comfortably, so let's look forward." Tang Huan waved his hand and said in a deep voice: "Although it takes a process to replace the flawless Pentium microprocessor, the user's direct experience depends largely on the software. ”

A burnt Andy? Grove, whose brain has been running at high speed during this time, quickly reacted, "Don means that you can control the adverse effects of the Pentium floating-point error from the operating system level?" ”

Tang Huan bowed slightly, "Zheru Software has done a technical evaluation, in addition to being able to identify the Pentium microprocessor where floating point errors occur, it can also temporarily bypass the problematic multiplication table in the form of sacrificing performance to achieve data security." ”

Speaking of this, Tang Huan accentuated his tone and pointed: "But you have to understand that this is just a stopgap measure, and Intel can't waste the buffer time that it has won so hard." ”

"Intel will definitely seize the time and make amends for its mistakes." A relieved Andy? Gloff, solemnly assured: "The Pentium microprocessor with the new core P54C is ready to replace the P5 core product. It's a product recall, which is a bit of an economic pressure. ”

"I can help you find funds." Tang Huan comforted Andy? After Grove, his eyes turned to John Chambers, "Fangyuan can also support it, and it should be an investment in the next generation of CPUs." ”

John Chambers didn't object, just reminded Andy? Grove, "Intel's promised new microprocessor with native multimedia instructions can't go wrong." ”

Andy? Grove agreed more and more easily, not caring for the unceremonious admonition in the other party's words.

I have to say that compared with the original time and space's control of the personal computer industry, Intel's status has now directly fallen to a level - depending on the face of Fangyuan Company.

After agreeing on this small-scale meeting, Tang Huan began to chair a larger industry meeting to coordinate various matters.

Because the cost of the Pentium microprocessor recall was solved by Intel and Fangyuan, the other companies did not bear much of the burden, and it was completely within their acceptable range, and the atmosphere of the meeting was not as heavy as many people imagined before.

The large number of reporters crouching in Cupertino were surprised by the speed of the meeting, and they were still surprised when they were assigned to the conference room where the press conference was held.

Andy? Grove, the main character, sits in the center. He solemnly announced that Intel is a responsible and great company, and in order to dispel the doubts of users, it has decided to completely recall the defective Pentium microprocessors, regardless of the gains and losses.

An impassioned statement really touched many people.

But some people still asked sharply - what to do with the flawed Pentium microprocessor after it is recalled? Will it be "polished" and re-enter the market?

Andy? Gritting his back molars, Grove replied: "In order to completely reassure everyone, this batch of defective Pentium microprocessors will be destroyed centrally." ”

Seeing that the atmosphere of the press conference was a little sad, the richest man interjected: "I have a suggestion, I don't know if it will work - these flawed Pentium microprocessors might as well be made into creative small objects such as keychains, as souvenirs, and given to everyone." ”

……

The following is the anti-D part, which will be updated tomorrow morning, so let's ignore it.

……

Tang Huan, who had foreseen it, was not surprised, but according to the feedback from the public relations department, he held a media briefing to give an official attitude on recent hot issues.

It is conceivable that Zheru Software Company has borne the brunt of the continuous actions in open source during this period.

Tang Huan, who is also the CEO of Zheru Software Company, turned on the microphone and said eloquently: "For a long time, there has been a very strong voice accusing Zheru Software of its actions as an intrusion with malicious intentions. I think this is unfair and even too extreme. ”

"The commercial success of Zheru Software cannot be the reason or motivation for all kinds of malicious speculation about it. And it is precisely because of this kind of business achievement that Zheru Software Company hopes that the entire industry can develop better -- everyone understands the truth that the skin does not exist and the hair will be attached. ”

"Zheru Software has been paying attention to the software open-source movement for a long time, so after careful evaluation and affirmation of its positive significance to the entire industry, it has made some tentative moves."

"Here, I don't want to flaunt anything, I just want to emphasize that it's better to do than not to do well."

"I also make no secret of the fact that Zheru Software Company will not and dare not open source the latest version of software products. However, Zheru Software is trying to share the source code with collaborators. However, the main motivation for this is the commercial interests of software engineering, which is clearly different from the naïve concept of the software open source movement. ”

"Judging from the current results, Zheru Software's open source initiatives have played a positive role, at least in education. We are deeply gratified by this and have a clear conscience. ”

"I personally believe that at this stage, the advocates and leaders of the open source community should focus more on how to improve the license agreement, so that no one can use the free public resources of the open source community to get a mature and stable code base, and suddenly change course and turn into a closed-source commercial product."

Speaking of this, Tang Huan shrugged his shoulders, "I think, this is what people with ill intentions should really worry about." ”

In the midst of the laughter in the audience, the curiosity about Zheru Software's participation in the open source movement suddenly dissipated - what mystery is there in the window paper that has been poked through such a big hole.

Next, a financial reporter asked about the listing process of Zheru Software Company.

"According to the schedule, Zheru Software will go public next year. I don't have more details to disclose here, if you are interested, you can pay attention to the company's follow-up public information. After Tang Huan answered clearly, he added: "Zheru Software Company is preparing to move to have a headquarters that is completely its own. ”

As soon as he heard this, someone immediately connected it with the widely spread April Fool's joke of AOL moving, so he quickly asked about the difference between the two.

Tang Huan replied in a natural tone: "Zheru Software Company will operate as a new public company, and it should be a wise decision to move away from Cupertino and get rid of the influence of the old management mechanism in order to achieve maximum independence~." ”

The reporter asked relentlessly: "Then what are the considerations for AOL to move to Rockefeller Center?" Rumor has it that you're going to buy Rockefeller Center, really? ”

"AOL's decision is naturally based on the need to grow the business. The acquisition of Rockefeller Center was a challenging task. This time, Mr. The richest man's answer was not so painful. The unpleasant performance of the dragonfly dotting the water and the cloud and mountain fog cover made the reporter's heart itch.

Tang Huan immediately coughed lightly and said: "I am meeting with you this time in order to talk about the problem of Zheru Software Company, and when I ask media friends to ask questions, don't deviate from this center." ”

"I can tell you about some of the latest developments in the products of Zheru Software. For example, there will be a batch of 'i' products coming out one after another. ”

"And what does the 'i' mean?" The reporter, who was reluctant to waste the opportunity to ask questions, asked listlessly.

The richest man replied with a high spirit, "One of the meanings of 'i' is 'internet'. For example, the upcoming Zheru office software suite, with the commercial name of Zerone_Office_i, and according to the positioning of the enterprise version, professional version, and personal version, there are i7, i5, and i3 differences. The purpose is to embody a new generation of software products, centered on Internet applications. ”

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