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Someone discovered the unpublished game of Nintendo NES 30 years ago and restored it from 21 floppy disks

via:博客园     time:2020/7/7 12:56:16     readed:83


Some time ago, I was surfing the Internet as usual. I often went to foreign websites to find some interesting anecdotes. As a result, I saw such an interesting report


The game of 30 years ago has been recovered from 21 floppy disks

In short, there is a website abroad called the video game history foundation, or vghf for short.


Logo of website

This website has its own team. They want to restore an old game 30 years ago, but the developer of this game has passed away. They can only find 21 floppy disks from the relics, and then piece together the code inside to make a complete game.

I was shocked when I beginning, I was shocked. There was only one question in my mind: How did this recover?

Let me give you a good look. First of all, you should know that the running platform of the game is nes, which is a console that Nintendo sold in the 1980s.

It doesn't matter if you don't understand it. We all know the little overlord game machine in China. It was the Nintendo NES plagiarized at the beginning~

There is a game engineer named Obert who has developed games for NES, and he is the dead developer mentioned at the beginning of the article.

Friends of the Obert family contacted the team and hoped that they could sort out his relics. After all, not everyone knows how to develop games, so we have to ask a professional team to have a look.

There are a lot of game related information left by Obert in his basement, including a large number of floppy disks. At this time, the team found that one of the floppy disks was quite special. It said "Nintendo hot rod taxi final", which probably means "Nintendo crazy taxi final".


At this time, someone in the team remembered that Obert appeared in the interview program he had seen before. In the interview, a game called "days of thunder" was briefly mentioned. It and "hot rod taxi" were both racing games, right?

So these people did not do two endlessly, and all the floppy disks related to the game were found out, even found dozens of them.


Next, the vghf team really began to figure out how to make the game 30 years ago a reality.

The first step is data recovery. They use PC Tools and dosbox to read and backup the data from the floppy disk to the computer. Some floppy disks have damaged sectors, but most of the data can still be read.


With the data, the next step is to restore the data, which the team found to be encrypted.

We quickly came up with three methods. One is to make an image through the above-mentioned software to let the data run on it; the other is to decrypt the data in reverse, but it will take a lot of time to parse the data.

But the team came up with a more simple and crude third way, which is to restore the hardware environment at that time, that is, physical restoration.

So an old brother named foone in the team rebuilt a hardware environment similar to that of that time. In other words, it was to rebuild a machine.


The data is successfully recovered in the new hardware environment. The next step is to rebuild the source, which can also be understood as repackaging and classifying the restored data.

The person in charge of sorting out the data has set up six separate binary folders, which can be used to separate different codes. In addition, two voice binary folders have been separated in advance. All the data that can be sorted out is here.


The romx command in the source code

But after the code is sorted out, how do you test it?

This group of people did not know where to find a 1987 Nintendo mmc1 mapper, where they got it all.


Then set the sorted code to the corresponding mapper location, match them one by one, and finally you can start the game with the simulator!

After the game started, some voices came out, and the screen also appeared, but it was not complete. There was nothing except a car.


However, this has been very successful. What remains to be done is to find and complete the missing characters, and finally restore the true face of the game 30 years ago.

Finally, with the efforts of the entire vghf team, all the content was integrated into a 128KB file.

They carefully opened the file, and the days of thunder, a 30-year-old racing game, was finally unveiled!

This game not only has a top-down view, but also displays rich contents, including speed, fuel and temperature, as well as tire wear and vehicle damage.


What about tire wear? It's just for maintenance~


The game even provides a first person perspective, which is a game from 30 years ago.


Days of thunder is so rich in details that it should have been a good game 30 years ago, but somehow it disappeared into history and almost forever lay in the basement of the game engineer's home.

But after 30 years, who would have thought that it was such a team that rescued the game from the storage carrier that had not kept up with the times, and after careful treatment, the game could be seen again.

And it's not just about that. Although I'm impressed by just fixing this game, don't forget that they have their own website.

When I click on the home page of their website, I was immediately shocked by their contribution to the old game.


For example, there is an article to repair the Nintendo NES version of "simulated city". In fact, Nintendo's "simulated city" appeared in the 8-bit era, but it was canceled and never appeared again.


However, vghf team still restored the game from the extremely rare game prototype, and made a great contribution to the game recovery and research work.


Scene patterns in game files

In addition, the vghf team has made a lot of contributions to all aspects of the game. They will even repackage the game that has been restored to its original form, and package it in a physical sense, so that the old game can be placed on the data cabinet in a physical way.


The vghf database

People say that digital content can be preserved forever, but it is not because some digital content is unknown.

However, teams or individuals like vghf can make these content come back to light, make history known to people, and even turn them into physical content, so that people can see and touch them.

However, some people will ask, but few people know about these old games?

It's true, but it's a huge step forward for them to be able to see the light again, as opposed to being piled up in the corner of the basement, not even a part of the game history?

There are still many people in the world who are engaged in the work that we have never understood, but they are still willing to spend a lot of time and experience to do these things.


Ao factory director and his friends are the benchmark of this content

These people also want to make more people realize what they don't know, and the world really needs them.

The vghf team uploaded the relevant files to GitHub. If you are interested, you can copy the link at the end of the article to download.


ArsTechnica,《30 years later, a lost Days of Thunder NES game recovered from 21 floppy disks》

The Video Gmae History Foundation, ,



This article is originally written in the official account of WeChat public, ID:chaping321. Shi Chao

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