Chapter 110 What is a major

In 1983, [Japan] This game company Nintendo released a machine called "Family_Compten", referred to as FC. Because its appearance color is only red and white, it is generally called "red and white machine" in China. In Europe and the United States, it is called "N" because it was released in Europe and the United States. The style color is gray, so some people call it a "gray machine".

The birth of the red and white machine has changed the development of Asian games, created the market for the third generation of home game consoles, and has had a far-reaching impact on the whole world. Later, due to the popularity of imitation machines, red and white machines or their imitation compatible machines can be seen in Taiwan and urban and rural areas of the mainland.

Most of the games cracked by Awei Studio are game casstycoes compatible with the red and white machine. Of course, he also often ported the games on the arcade to the game red and white machine game card.

Sun Wu was very happy when he heard Gu Wei say that he wanted to crack the game live.

He said, "I'm lucky today. I'm blessed with my eyes! It's usually difficult to encounter such a scene.

Lin Hongbi is looking at Gu Wei's workshop.

The workbench is a long conference table full of all kinds of electronic components.

Desk lamps, electric soldering irons, various metal wires, and some module chips and so on. The most strange thing about Lin Hong is that there are many glass bottles on it, which contain colorful **.

He looked up at the labels on the bottle: tank cleaning agent, anti-welding lotion, gold-rejection water, water-rejection, etching liquid from the names on these labels, and Lin Hong also probably guessed their role.

Seeing this, Lin Hong felt that the other party was really professional. At the beginning, there were no such things on his workbench. He didn't know that there was still such a thing as "retiring water".

In addition to these, there is also an Apple 4th computer that Lin Hong is familiar with on one side of the workbench.

The game board that Gu Wei got today was a little big. Lin Hong could see at a glance that this was a board on the arcade, a similar board. He had seen it before when he was in the Dongling Game Hall. At that time, Xiaopang's uncle told him carefully.

"This board is a good thing."

Gu Wei pushed the things on the workbench aside, and then put the board on it.

"This is the arcade game Sharoman Snake released by Konami in 1986. It is a flight shooting game, which is very playable. The Saroman Snake has greatly changed the consistent "cristic" style of the space cruiser. The picture and music have been greatly improved. The design of the level and the enemy is also very rich and distinctive. It can also be played by two people at the same time. It can be resurrected immediately after death. The weapon and ability system have also greatly simplified these It's a classic in flight shooting games.

"Viagra, how are you going to crack it?" Sun Wu asked...

"First of all, port it and store the game on the cassette, so that the game can also be played on the red and white machine and other compatible machines. Then you can crack it."

Gu Wei pointed to several chips on the motherboard of the game console and said, "Have you seen these chips? This is the place to store game data, the memory IC model 2764.

Following his direction, Lin Hong did see the printed numbers of "knife concave" from those chips, and the brand name "Intel". Only then did he understand that this number referred to the model of the chip and was the place where the data was stored. He counted about a dozen such IC chips.

Gu Wei carefully took off one of the 2764 electric soldering irons, and then pasted a number on it. He clamped the chip with a chain and explained: "2764 is an 8K*8-byte ultraviolet erasure, electrically programmable read-only memory, a single positive 5-volt power supply, and the working current is 10,000 milli The current is witch milliamper, with a total of flying pins, which are packaged in double-line. Its pins mean..."

Gu Wei knows these very well. This chip is a component that he has a lot of contact with, so he opens his technical parameters.

After saying that, he asked, "Can you understand?"

"I don't understand." Sun Wu shook his head simply.

Lin Hong nodded: "I almost understand. Its principle is actually similar to the memory of the computer, which is much simpler than the CPU."

Gu Wei's eyes lit up: "Do you know computers?"

"I have an APPKE-LL at home, and I've been working on that computer manual these days." Lin Hong said truthfully.

"Since you have a foundation in this regard, it will be even better. Wuzi, if you feel bored, find something to play by yourself. What I'm talking about must not be understood at first without skills.

"Good!"

When Sun Wu heard this, he suddenly stayed here and ran to the lobby to play games. There were TV sets, game consoles, and all kinds of game cards. He had been a little impatient for a long time.

Then, Gu Wei asked a few more in-depth technical questions, and Lin Hong quickly answered, and the [answer] case was more professional than he expected. Only then did he understand why Sun Wu said that Lin Hong was more "proficient" in electronic technology.

Then, Gu Wei took down the remaining 2764 chips. He introduced to Lin Hong that among these chips, various data of the game, such as images, sounds and characters, are stored separately. Through the main program, these data can be said to be called and run. It is this data that constitutes the game. The main body.

"The next step is to extract the data from these memories. In this process, there is a term called DUMP, which means extraction and export."

"Because arcade game consoles basically use 280 as the CPU for calculation, we need to simulate the operating environment of the Z80, which requires the use of the Apple II computer. You have an Apple machine yourself, and you should know how to switch to the Z80 environment, right?"

Lin Hong shook his head: "The CPU of my machine is 6502, and I have never used Z80"

Gu Wei is not surprised by this. If it is not necessary to do something in the Z80 environment, Apple users generally do not have access to this content.

He explained: "There are eight expansion slots on the Apple machine, and we can switch to this mode by inserting a Z80 expansion card on it."

In order to let Lin Hong see more intuitively, Gu Wei even removed the display from the chassis, opened the lid on the chassis, and exposed the motherboard inside.

Lin Hong saw that his motherboard was full of expansion cards, and there was only one of the eight slots left.

"What's the use of these cards?"

"This is the analog card of Z80, and then this is the third card of extended memory. You should know that it is DISK_II, which comes with Apple, the fourth card is the acceleration card, and the frequency of Apple II is 1

megahertz, with this card, it can be increased to 36 megahertz, which greatly improves its computing speed"

When Lin Hong heard his introduction, his saliva was about to flow out. This Apple machine is an artifact. I don't know how many times the performance has been improved by his expansion.

What is a major? This is it!

Then, Gu Wei closed the lid, then moved the monitor back and put it on it, started the machine, and switched to Z80 mode.

In Z80 mode, the operating system running on Apple is not Apple's own APPLE-DOS

Instead, the CP/M operating system, an operating system developed by a digital research company in 1974, is an 8-bit CPU (such as Intel8080). The operating system designed by the personal computer of ZilogZ80, etc.

In the 8-bit era, this operating system has a wide range of applications. Unfortunately, it failed to compete with Microsoft's MS-DOS in the 16-bit era, and eventually disappeared and was forgotten by everyone.

While introducing to Lin Hong, Gu Wei took out something the size of a shoe box from the toolbox.

"This is an EPROM burner, and the official name is IC programmer. The model is ALL-03.

If you want to get the data DUMP in 2764, you can't do without this.

When Gu Wei explained these things, Lin Hong just kept nodding and did not say anything to ask. At first, Gu Wei thought that Lin Hong was shy and was embarrassed to stop from time to ask if there was anything he could not understand, but the answer he got was already understood.

This knowledge is indeed not very difficult for people who know how to do it, but it is as difficult to understand as a heavenly book for people who have never been exposed to this aspect, but since Lin Hong himself has said that he understands it, it is not easy to say anything.

Gu Wei simply stopped asking later. He just talked about himself. Anyway, he promised to explain it to him in detail before. As for how much he could listen, it was up to Lin Hong's own.

Lin Hong was extremely happy at this moment. What Gu Wei said was completely strange to him. He liked these things. The stranger he was, the more he liked them. He frantically absorbed the knowledge points Gu Wei said every afternoon.

For example, this EPROM burner is another thing he has never touched. He saw that the shoe box-sized burner [middle] center has a row of two rows of jacks. He already knows that this should be a slot for chips such as 2764, and there are many of these slots.

"This burner is a good thing. It can easily burn and test various types of data. If you want to read and burn data, you can only rely on it. It has a total of 40 pins, which can burn 2k to 8M

The EPROM of the bit. Of course, it can also be used as a DUMP read-only memory.

Gu Wei plugged a 2764 chip into the middle slot, then connected an expansion card matched with a burner, and finally plugged the expansion card into the expansion slot of the Apple machine.

After preparing these, he finally started the computer and entered the CP/M operating system.

Running the existing program, Gu Wei quickly took out the data DUMP in the 2764 chip and formed a file package. He put the file package in a folder, and then began to continue the data of other DUMP chips.

The next process is a repetitive action. Gu Wei had nothing to say about DUMP the data in several other pieces of memory, so Lin Hong picked up the technical manual of the recorder and read it carefully. There are not only operating instructions, but also the detailed schematic diagram of the recorder. In the gap, There are even some of Gu Wei's usual research experience.

Lin Hong was fascinated for a moment.