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Commodore 64

Commodore 64

Commodore 64, also known as the Commodore C64C or Commod ...

Gameboy

Gameboy

In the world of portable consoles, Nintendo Gameboy is a ...

Gameboy Advance

Gameboy Advance

Gameboy Advance is a perfect tool for games and currentl ...

Gameboy Color

Gameboy Color

In late 1998, a new wearable gameboy video game system c ...

Microsoft Xbox

Microsoft Xbox

Xbox is the first game console developed by Microsoft. I ...

Nintendo

Nintendo

Nintendo Entertainment System, also known worldwide as N ...

Nintendo 64

Nintendo 64

Nintendo 64, also known as Project Reality, is a game co ...

Nintendo DS

Nintendo DS

Nintendo DS, Full Name Nintendo Dual Screen: Continuous ...

Nintendo Wii

Nintendo Wii

Nintendo Wii is one of the game consoles where many play ...

Playstation

Playstation

Sony PlayStation (PS, PSone, PS1 and PSX for short): A f ...

Playstation 2

Playstation 2

PlayStation 2 is one of the most popular video game cons ...

Playstation Portable

Playstation Portable

Playstation Portable or PSP was a breakthrough in the wo ...

Sega Master System

Sega Master System

Sega Master System: is the third generation gaming conso ...

Super Nintendo

Super Nintendo

Super Nintendo Entertainment System, abbreviated and bet ...

ZX Spectrum

ZX Spectrum

ZX Spectrum: A third computer from Sinclair Research Ltd ...

WHAT IS ROM

ROM, Rom games and emulators, does this seem unknown to you? Video game ROMs are nothing more than software installed in a video game cartridge. However, there are currently hundreds of thousands of ROMs available for download on the Internet. At first, people with advanced computer skills began to extract ROM from the cartridges and upload them to the Internet.

ROM or ROM GAMES that means (Read-only memory), this is NVM or (Non-volatile memory) that we use mainly in many devices such as computers, mobile phones, consoles and others. Most of the time, it is impossible to modify the ROM data without having advanced knowledge in the computer field. The main use of ROM is to store the firmware. You may wonder "and what is the firmware?" Let me answer you. Firmware is a type of software that is closely related to specific hardware and needs frequent updates. Now, back to ROM, as I said, its main use is to store the firmware or application software in plug-in cartridges.
Read-only memory refers to wired memory. Like the diode array and the ROM or "MROM" mask, which means we cannot change it after it is produced.
Lately, the ROM has been updated to include ROM in normal operation, but we can reprogram it in another way.

Erasable programmable read-only memory or we can call it (EPROM) and electrically erasable programmable read-only memory or we can also call it (EEPROM), it may be a bit understandable by name that we can erase and reprogram again. But it usually takes a long time and requires special equipment or material for configuration and only for a short time.
The read speed of the ROM is, of course, very different from the speed of the RAM, so we copy the contents of the ROM into the RAM before the first use, then read into the RAM.
ROM write speed: for electrically modified ROMs, the write speed is always much slower than the read speed, sometimes it requires a high voltage.

How are ROM files made?

One of the most important questions you probably have is how ROMs are made. They are manufactured with special equipment called "dumpers". The whole process is called dumping. This device can be Doctor V64 or Retrode. Basically, each cartridge will require a separate tipper. A tipper is used to connect the cartridge to a computer and allow a user to copy the content. The whole process is complicated and requires a lot of time and individual execution. A truck is unique according to the console cartridge for which it was designed.

You can believe that doing ROM is extremely easy. That's not. Almost all manufacturers of game consoles and game cartridges have used or tried to use protection that would make the creation of ROMs impossible. For example, Nintendo used 8 cm discs, extremely rare and therefore impossible to copy. Users did not know how to connect a disk to a tipper. This protection was common in Nintendo GameCube.

Neo Geo devices used an algorithm that would make the game impossible to copy and use. The algorithm prevented users from creating games for emulators. It was a problem until 2000, when hackers deciphered the algorithm and allowed players to play copied games.

How ROMs are Used?

The simplest answer is to play games on computers. As you know, to play Game Boy Advance games you will need a real device. It is expensive, impossible to find and most of them are saved as memories. But millions of players around the world want to play GBA games in 2019. The only possible way is to use ROM.
To play a ROM game, you will need an emulator that is a special software developed exclusively for this purpose.
We explain what ROMs are, how they are made and why they are used. Today, they allow millions of players to play classic archival games and experience the same gaming experience as their children a few decades ago.

I think I gave you a good idea of ??what ROM is, let's go back to our first question: what are the games Rom?

Well, to answer this question, you need to know what a ROM image or a ROM file is. It is simply a computer file that contains a copy of some data from a read-only chip, usually a video game cartridge. Main board of arcade games or computer firmware. We use this term more often related to emulators. When we recover old games or firmware from the computer and copy them to ROM files on recent computers, we can use this software called "EMULATOR" to run this ROM game on a "PC" computer. On our website you can find all emulators for all popular consoles: Nintendo, Super Nintendo, Game Boy Advance, GameCube, Sega, PlayStation, PS2, PSP, Xbox. Here on this page, we will give some information on all the famous and mostly searched platforms below. You can click on the link given in their to read more.

1- Nintendo DS ROMS:

The Nintendo DS or simply DS is a two-screen portable game console developed and released by Nintendo. The device was marketed in 2004 and 2005 worldwide DS, which stands for the "developer system" or 'dual screen', introduced new abnormalities in the portable video games: two LCD screens in tandem (the last operation (as a touch screen) Built-in microphone and wireless connectivity support Both monitors come in a clamshell design similar to Game Boy Advance SP The Nintendo DS also allows multiple DS consoles to interact directly with each other in a short radius via Wi-Fi, without having to connect to an existing wireless network, you could also use the Nintendo Wi-Fi Connection Service, which is now gone, with the Sony PlayStation Portable being the seventh generation of video game consoles.

Prior to its release, the Nintendo DS was marketed as the "third pillar" of the Nintendo console series, which complements the Game Boy Advance and GameCube product lines. Backward compatibility with Game Boy Advance titles and strong sales ultimately make it the successor to the Game Boy series. [6] On March 2, 2006, Nintendo released the Nintendo DS Lite, a sleeker and lighter redesign of the original Nintendo DS with brighter displays. On November 1, 2008, Nintendo released the Nintendo DSi, a new design with several hardware enhancements and new features, although compatibility with previous versions of Game Boy Advance titles has been lost. All Nintendo DS models, along with 154.02 million units sold, were the # 1 selling portable gaming console ever and the # 2 selling video game console ever made by Sony PlayStation 2. The Nintendo DS family has been replaced by the Nintendo 3DS 2011 family, which is backward compatible with almost all Nintendo DS programs.

Here is a sortable list of video games on the Nintendo DS, DS Lite, and DSi portable game consoles. Note that this list does not contain any games published on DSiWare. The last game released for the Nintendo DS was Big Hero 6 Bay Battle in October 2014. However, a set of two Disney includes both the aforementioned game and Disney Frozen Olaf Quest on a cassette is being launched for the DS in 2015 been.

Read More at NDS ROMS Page.

2- Game Cube ROMS:

The Nintendo GameCube (commonly known as GameCube, model number: DOL) is a home video game console marketed by Nintendo in 2001 in Japan and North America, and in 2002 in Europe and Australia. The sixth-generation console is the successor to the Nintendo 64. It competes with Sony's PlayStation 2, Microsoft's Xbox and Sega's Dreamcast.

The GameCube is the first Nintendo console to use optical media as its primary storage device. The discs are in miniDVD format and unlike its competitors, the system is not designed to play DVDs or normal sized audio CDs, and instead focuses on games. The console supports a limited number of online games for a small number of games through a high-speed GameCube adapter or modem, and can be connected to a Game Boy Advance via a connection cable. Players can access exclusive game features by using the handheld as a second screen and use as a gamepad.

The GameCube uses composite video cables to watch games on TV. However, there are differences between the two GameCube models. Models manufactured before May 2004 can also use AV cables for digital components, progressive scan features, and a second serial port. The nameplate on top of the console with the words "Nintendo GameCube" can be removed. This model is known as DOL-001. All these features were removed in GameCube consoles manufactured between 2004 and 2007. the last model was called DOL-101. The new model has firmware that disables the action replay cheat codes and cheat codes, and the disc playback laser has been improved in many ways, although it is not that durable. The newer model comes with a 48-watt power supply to power the console, while the original model has 46 watts.

The reception of the GameCube was generally positive at the time. The console was praised for its controller, extensive software library, and high-quality games, but was criticized for its exterior design and lack of functionality. Nintendo sold 21.74 million GameCube units worldwide before the console shut down in 2007. The sequel, the seventh generation Wii (some of which are backwards compatible with most GameCube programs), was released in November 2006.

The GameCube is Nintendo's fourth home video game console and was released for the sixth generation of video games. It is the successor of the Nintendo 64 and was launched on September 14, 2001 for the first time in Japan and on November 18, 2001 in North America and May 3, 2002 in Europe. The successor to the GameCube is the Wii, which was first introduced on 19 November 2006 in North America and is backwards compatible with GameCube games, memory cards and controllers. Later Wii models have removed the backward compatibility feature. The last game released on the platform is Madden NFL 08, which was released on August 14, 2007 in North America.

Read More at Nintendo GameCube ROMS.

3- Game Boy Advance ROMS (GBA ROMS):

Unlike the previous Game Boy models, which all followed the original Game Boy's "portrait" form factor (designed by Gunpei Yokoi), the Game Boy Advance was designed in "landscape mode" with the buttons placed on the sides of the game were. instead of under the screen. The Game Boy Advance was designed by French designer Gwénaël Nicolas and his Tokyo-based design studio Curiosity Inc.

News from a successor to the Game Boy Color (GBC) was unveiled at the end of August 1999 at Nintendo Space World, when it became known that two new handhelds were in progress, including an improved version of the GBC. with online wireless connectivity, codenamed Advanced Game Boy, and a brand new 32-bit system to be released the following year. On September 1, 1999, Nintendo officially announced the launch of Game Boy Advance, which included detailed system specification information, including online connectivity via a mobile phone and an improved Game Boy camera model. Nintendo announced that the mobile terminal will be marketed in Japan for the first time in August 2000. The launch dates in North America and Europe are planned for the end of the same year. At the same time, Nintendo announced a partnership with Konami to launch Mobile 21, a development studio focused on developing technologies for the interaction of the GBA with the Dolphin home console, which is also in the development stage of Time. On August 21, 2000, IGN showed pictures of a GBA development kit using a demonstration port by Yoshi Story. On August 22, in an issue of Famitsu magazine in Japan, images of GBA were revealed before production. On August 24, Nintendo officially unveiled the console in a presentation with Japanese and North American start dates and announced that 10 games would be available as startup titles for the system. The GBA was then shown at Nintendo Space World 2000 from August 24-26, along with several system peripherals, including the GBA Link cable, the Game Boy Advance GameCube cable, a rechargeable battery for the system, and a communications adapter. Infrared. This would allow the systems to share data. In March 2001, Nintendo unveiled details of the system's North American launch, including the suggested $ 99.99 prize and 15 start games. Nintendo estimates that by the end of 2001, about 60 games will be available on the system.

With features comparable to those of Super NES, Game Boy Advance is a breakthrough in Sprite-based technology. The Game Boy Advance features platforms, SNES-style role-playing games, and classic 8-bit and 16-bit games Bit systems of previous generations. This includes the Super Mario Advance series as well as the backward compatibility of the system with all previous Game Boy titles. All titles were exclusive to the GBA and none of them was backwards compatible with the old Game Boy systems. It contained a warning message that refused to play the classic Game Boy.

Final Fantasy VI Advance was the final version of the licensed Japanese GBA game. Released in November 2006, this was the latest game released by Nintendo for the system. 2 games in 1: Columns Crown and ChuChu Rocket! Samurai Deeper Kyo was the last GBA game in North America released in February 2008. The latest game developed by Nintendo for the system was the only rhythmic Tengoku game in Japan that was later released. to form the popular Rhythm Heaven series.

Read More About GameBoy Advance Roms.

4- Nintendo 64 ROMS (N64 ROMS):

The home video game console on the Nintendo 64 has a game library that has been primarily released in plastic ROM cartridges. Two small fingerprints on the back of each cartridge allow you to connect or pass the dustpanels on the system cartridge. All regions have the same ports, and Region-Lock cartridges can be integrated into other region systems by using a cartridge converter or by simply removing the cartridge case. However, the systems are also equipped with locking chips, with which they can only play the appropriate games. The Japanese and North American systems have the same NTSC lock, while Europe has a PAL lock. A bypass device such as N64 Passport or Datel Action Replay can be used to read import titles. However, some games require an additional startup code before they can be played.

Of the 388 official versions of the console, 196 are linked to Japan, 296 to North America and 242 to Europe. The Nintendo 64 was introduced on 23 June 1996 for the first time in Japan with Super Mario 64, Pilot Wings 64 and Saikyo Habu Shogi. in North America with Super Mario 64 and Pilotwings 64; and in Europe with Super Mario 64, Pilotwings 64, Star Wars: Shadow of the Empire and Turok: Dinosaur Hunter. The final game released for this system was Tony Hawk's Pro Skater 3, a North American, on August 20, 2002. The best-selling game is Super Mario 64 with 11 million units on May 21, 2003. Regardless of cartridge production costs and continued criticism of the release of a cartridge system, total Nintendo 64 software sales exceeded the total sales of Nintendo GameCube software. The Nintendo 64 library is currently the smallest global library of game titles on a Nintendo home console.

This list does not include games for the Nintendo 64DD drive. The list is initially ordered in alphabetical order according to its English title or alphabet conversion. However, it is also possible to sort each column individually. It is organized with the different titles that are listed once for each included program. The different titles are listed first by the majority. For two English regions that have a game with different names, the first version will be displayed first. All English titles are listed first, then another title. Direct translations of English titles are not used.

The Nintendo 64 (officially abbreviated as N64, model number: NUS, stylized in NINTENDO64) is a home video game console developed and marketed by Nintendo. Named after its 64-bit CPU, it was released in June 1996 in Japan, in September 1996 in North America and Brazil, in March 1997 in Europe and Australia and in September 1997 in France. This was the last major home console that used the cartridge until the Nintendo switch in 2017 as a primary storage format. The Nintendo 64 was shut down in 2002 after the introduction of its successor, the GameCube, in 2002.

The design of the Nintendo 64 named "Project Reality" was almost completed in mid-1995. However, the launch was delayed until 1996 when Time honored him as Machine of the Year. It started with three games: Super Mario 64 and Pilotwings 64 (World) and Saikyo Habu Shogi (Japan exclusive). As part of the fifth generation of games, the system competed mainly with PlayStation and Sega Saturn. The suggested retail price when it was introduced in the US was $ 199.99, and 32.93 million units were sold worldwide. In 2015, IGN named it the ninth largest video game console ever.

Read More at N64 Roms Page.

5- PlayStation 2 ROMS (PS2 ROMS):

The PlayStation 2 (officially called PS2) is a home video game console developed and marketed by Sony Computer Entertainment. Launched for the first time in Japan on March 4, 2000, North America on October 26, 2000, Europe and Australia in November 2000, it is the sequel to the PlayStation and the second video game console. the brand PlayStation. As the sixth-generation console, the PS2 against Segas Dreamcast, Nintendo's GameCube and Microsoft's Xbox on.

The PS2 was announced in 1999 and provides backward compatibility for the DualShock controller of its predecessor and the games. The PS2 is the best-selling video game console ever. According to estimates by IGN, there were 159 million units, of which Sony confirmed 150 million in 2011. Since then, more than 3,800 PS2 game titles have been released at over 1.5 billion. Copies. sold. In 2004, Sony produced several smaller and lighter versions of the console, called slimline models. In 2006, Sony announced its successor, the PlayStation 3.

Even with the release of his successor, the PS2 remained popular until the seventh generation and was produced until January 4, 2013, when Sony finally announced that it had been interrupted after twelve-year production had longer lifetimes of a movie. Game console: Despite this announcement, new console games were released in late 2013, including Final Fantasy XI: Adoulin Explorer for Japan, FIFA 13 for North America, and Pro Evolution 2014 Football for Europe. The system repair services in Japan ended on September 7, 2018.

Although Sony has hidden the secret of the development of the PlayStation 2, work on the console began around the time of the release of the original PlayStation (late 1994). Insiders said it was developed on the West Coast of the United States by former members of Argonaut Software. In 1997, the press believed the console was backward compatible with the original PlayStation, a built-in DVD player and an Internet connection. Sony announced the PlayStation 2 (PS2) on March 1, 1999. The video game console positioned itself as a competitor to Sega's Dreamcast, the first console of the sixth generation to hit the market. Xbox. The Dreamcast itself was successfully launched in North America later that year, selling more than 500,000 units in two weeks. Shortly after launching Dreamcast in North America, Sony unveiled the PlayStation 2 at the Tokyo Game Show on September 20, 1999. Sony unveiled fully playable demos of upcoming PlayStation 2 games, including Gran Turismo 2000 (later released): Gran Turismo 3: A-Spec). and Tekken Tag Tournament - shows the graphics capabilities and console performance.

The PS2 was launched in Japan in March 2000, in North America in October, and in Europe in November. Consoles, games and accessories sales were $ 250 million on the first day and $ 97 million on the first day of Dreamcast. Immediately after publication, manufacturing delays made it difficult to find PS2 devices in retail outlets. Another option was to buy the console online through auction sites such as eBay, where users paid more than a thousand dollars for the console. The PS2 initially sold well thanks to the strength of the PlayStation brand and its compatibility with previous versions of the console. On March 5, 2000, one day after launch, more than 980,000 units were sold in Japan. This allowed the PS2 to leverage the extensive base of PlayStation-equipped facilities - another key selling point compared to the competition. Later, Sony added new development kits for game developers and other popular PS2 devices. The built-in functionality of the PS2 has also expanded the audience beyond the player. The original price is equal or lower than a standalone DVD player. This has made the console a low-cost entry into the home theater market.

There are currently 4490 games across this page. Read More about it at PS2 Roms Page.

6- PlayStation Portable ROMS (PSP ROMS):

The PlayStation Portable (PSP) is a portable game console developed by Sony Computer Entertainment as part of the seventh generation of video game consoles. The development of the handheld console was announced at E3 2003 and presented on May 11, 2004 at a press conference organized by Sony before the next E3. The system was introduced on December 12, 2004 in Japan. in North America on March 24, 2005; and in the PAL region on September 1, 2005. It was competing with the Nintendo DS.

The PSP was the most powerful portable console at the time of its launch. It was the first true competitor of Nintendo's handheld consoles after the failure of many competitors such as Neo Geo Pocket of SNK and N-Gage of Nokia. With its advanced graphics, the PSP is a very popular mobile entertainment device that allows connections to PlayStation 2 (PS2) and PlayStation 3 (PS3) game consoles, Microsoft Windows and Apple Macintosh computers and other systems, PSP and the Internet. The PSP is the only portable console that uses a Universal Media Disc (UMD) optical disc as the primary storage medium. It was well received by most critics of video games and sold 76 million copies in 2012.

Several console models have been released. The PSP was replaced by the PlayStation Vita, which was released worldwide in December 2011 in Japan and in February 2012. The Vita is backward compatible with many PSP games being marketed on PlayStation Network through the PlayStation Store PSP games after Sony shut down the PlayStation Store on March 31, 2016 from the PSP system. Material deliveries ended in 2014; PSP has sold 80 million units in the 10 years of its existence. Production of UMD was discontinued when the last Japanese plant in which it was manufactured closed at the end of 2016.

Sony Computer Entertainment announced at a press conference prior to the E3 2003 for the first time the development of the PlayStation portable. Although the examples were not presented, Sony has released numerous technical details. CEO Ken Kutaragi called the device the "walkman of the 21st century"; a reference to the multimedia capabilities of the console. Several gaming sites were impressed by the terminal's computing capacity and eagerly awaited its potential as a gaming platform.

In the 1990s, Nintendo dominated the portable console market since the introduction of its Game Boy in 1989, while Bandai WonderSwan (1999-2003) in Japan and Gear Gear (1990-2001) were highly competitive. In January 1999, Sony had marketed the PocketStation in Japan, which had a short success, as a first foray into the market of pocket games. Also, the SNK Neo Geo Pocket and the Nokia N-Gage could not reduce the share of Nintendo. According to an IDC analyst from 2004, the PSP was the "first legitimate competitor of Nintendo's dominance in the handheld market".

The first conceptual images of the PSP appeared in November 2003 at a corporate strategy meeting from Sony and showed that it had flat keys and no analog joystick. Although some critics were concerned about the lack of analogue controllers, these fears were placated during the official unveiling of the PSP at Sony's press conference at E3 2004. Sony has released a list of 99 developers who are committed to supporting the new handheld. Also featured at the conference were demos from games like Konami's Metal Gear Acid and SCE Studio Liverpool's Wipeout Pure.

This is a list of games for the Sony PlayStation Portable Handheld Console. PSOne classics or PS minis are not included. Games have been launched in many parts of the world. North America (NA), Japan (JP), Europe (EU) and Australia (AUS).

The games indicate the date on which the game was first started in this region.

Remarks:

Publishers and regions are organized in order of publication.
Alternative titles in English are listed under the main title.
There are currently 1368 games on this list.

Read More at PSP ROMS Page.

7- Super Nintendo Entertainment System ROMS (SNES ROMS):

The Super Nintendo Entertainment System (SNES), also known as Super NES or Super Nintendo, is a 16-bit home video game console developed by Nintendo, released in Japan in 1990 and in North America in 1991 and Japan in 1992. Europe. and Australasia (Oceania) and 1993 in South America. In Japan, the system is called Super Famicom (SFC). In South Korea, it is known as Super Comboy and was distributed by Hyundai Electronics. The system was launched on August 30, 1993 in Brazil by Playtronic. Although each version is essentially the same, different forms of regional lock prevent different versions from being compatible. SNES is Nintendo's second programmable home console after the Nintendo Entertainment System (NES). The console had advanced sound and graphics capabilities compared to other systems at the time. The system was developed to support the ongoing development of a range of in-game cassettes enhancement chips to compete for the next generation.

The Super Nintendo Entertainment System video game console includes a library of games released in ROM plastic cassettes. The cartridges have a different shape depending on the region. The North American cartridges have a rectangular bottom with inserted grooves that correspond to the protruding tabs of the console, while the cartridges of the other regions are narrower, with a smooth curvature at the front and no grooves. Physical incompatibility can be resolved by using different adapters or changing the console. Internally, a regional lockout chip in the console and in each cartridge prevents PAL games from being played on Japanese or North American consoles and vice versa. To resolve this problem, use adapters by usually inserting the imported cartridge into a slot and a cartridge with the corresponding range chip into a second slot. Otherwise, disconnecting a stylus from the console lockout chip prevents the console from locking, though the later game hardware may detect this situation.

Of the 1758 official versions of the console, 721 were released in North America, 517 in Europe, 1 448 in Japan, 231 on Satellaview and 13 on Sufami Turbo. 293 versions are common to all regions, 148 in Japan and the United States alone, 163 in Europe and the United States, and 30 in Japan and Europe. There are 970 exclusive Japanese, 121 exclusive Americans and 34 exclusive Europeans. The Super NES was released on August 23, 1991 in North America and has the following titles: Super Mario World, F-Zero, Pilot Wings, Gradius III and SimCity (Super NES). The latest game officially released for this system was Star Fox 2, which was released in 2017 in a format that was modeled after the Super NES Classic Edition's plug-and-play system, while the latest game, officially released on a physical cartridge was released, Fire Emblem was. : Thracia 776 January 21, 2000 - with the latest game officially released and released by Nintendo during the life of this system: Metal Slader Glory: Director's Cut on November 29, 2000 via the downloadable Nintendo Power Cartridge System. The best-selling game is Super Mario World with over 20.6 million units sold. Despite the relatively late launch of the console and strong competition in North America and Europe with Sega's Genesis / Mega Drive console, this console was the best-selling of its time.

Read More about SNES Roms.

What are emulators?

An emulator is a hardware or software device that allows a computer system (also called a host) to mimic the functions of another computer system (called a guest). It allows the host system to run software, tools, devices and other components designed for the host system. The emulators can be of different types, reproducing elements such as hardware, software, operating system or processor. However, in most cases, the hardware architecture is emulated to provide an environment similar to a guest system.
An emulator regenerates an original computing environment using software and hardware. The process of creating an authentic emulator is complex and time consuming. But once created, it provides the authenticity of the original computing / digital object environment without resorting to the original system.

Emulation techniques are applied to recreate the hardware and software environment of a computer system on a different machine. Once the emulator is complete, users can access the applications or operating system of the emulated system and the original software can be run on the host system. For users, the experience is the same as if they were using the original guest system.
Roms Emulators generally consist of three components:

CPU emulator (the most complex part)
Memory subsystem emulator
Different emulators of input / output devices

How do emulators work?

The emulators are of two different types: low level and high level. The difference lies mainly in the way the emulation is performed.

Low level emulation

In low level emulation, the PC claims to be the video game console.

In low level emulation, the PC claims to be the video game console.
Low level emulation (LLE) simulates the behavior of the hardware to emulate. The host computer will create an environment in which the application will run, where it will be processed, as closely as possible, as the emulated hardware would. For a more precise emulation, not only all components are simulated, but also their signals. The more complex the system, whether it has more chips or a complicated chip, the harder it will be to make LLE.

LLE can be done through hardware or software. In hardware, the actual hardware or something that can replace it resides in the system itself. The PlayStation 3 of its first two models emulates the hardware that contains the actual hardware used in the PlayStation 2. Older Macintosh computers had a complementary card, called the MS-DOS Compatibility Card, which contained a processor-based system based on 486x86

The low level software emulation is as it seems, it simulates hardware using software. Many retro video game consoles and 8-bit home computers are emulated in this way using well-understood components (it is more difficult to find a popular system that does not use the venerable MOS 6502 or the Zilog Z80). One aspect that can make or break an emulation is the frequency with which it synchronizes each emulated component. For example, the SNES Higan emulator is very accurate as the number of component synchronizations increases. This allows games that have had synchronization attacks or other synchronization dangers to be played. However, the cost of this operation is that Higan requires a very fast processor compared to what it is trying to emulate.

High level emulation

In high-level emulation, the PC provides software hooks for the game to work on its hardware.

In high-level emulation, the PC provides software hooks for the game to work on its hardware.
High Level Emulation (HLE) takes a different approach to simulate a system. Instead of trying to simulate the hardware, it simulates hardware functions. In the mid-1990s, hardware abstraction was spreading to more computer systems, including video game consoles. This made programming easier because developers no longer needed to invent or reinvent the wheel.

Hardware abstraction is a way to disguise the intricate details of hardware control. Instead, it provides a set of actions that a developer commonly uses and automatically processes all the small details. An example is the way in which the storage disk interfaces appeared. Originally, if a developer wanted to read the data of a reader, he had to ask him to run the unit, place the read / write head and take the time to read the data, retrieve the data and then transfer it. With the hardware abstraction, the developer orders "I want to read there" and the firmware of the player does the rest. An HLE takes advantage of hardware abstraction by determining what commands they should do in the emulated environment and letting the host hardware do the rest.

HLE has three main methods to simulate hardware functions.

Interpretation: The emulator executes the application code line by line simulating what each instruction is supposed to do.

Dynamic recompilation: The emulator examines the fragments of the application processor instructions and see if you can optimize them to work better on the host computer's processor. This opposes the execution of each instruction one by one, which generally results in search overload penalties.

List interception: coprocessors, such as the graphics processor and the audio chip, which have sufficient hardware abstraction, request the main processor to send command lists. These are a series of instructions that tell the coprocessor what to do. The emulator can intercept the list of commands and turn it into something that the host can process in a similar coprocessor. For example, the lists of commands sent to the emulated system GPU can be intercepted and transformed into DirectX or OpenGL commands for the host's video card to be processed.

An example of HLE is the Java virtual machine (JVM). The Java code is not compiled or executed natively on the host machine, but the host machine runs an emulator of a theoretical Java machine. Applications designed for the Microsoft .NET Framework also work this way. This method of running an application is commonly called Just-in-Time (JIT) compilation.

The performance that HLEs can provide is such that it was possible to emulate the Nintendo 64 on a Pentium II processor in 1999, three years after the launch of the console. In fact, this is the most likely way that the Xbox One can emulate the Xbox 360, despite the use of hardware that is not really superior to this.

Some most famous emulators are mentioned below. You can read their description by going to the links given in each emulator's short summary.

1- SNES Emulators:

The Super Nintendo Entertainment System (SNES) is a fourth-generation 16-bit home video game console released by Nintendo on November 21, 1990 in Japan and on August 23, 1991 in the United States. It was sold for $ 199.99. It has a Ricoh 5A22 processor at 3.58 MHz. Based on the name of its predecessor, the Nintendo Entertainment System, it was also dubbed Super Famicom in Japan and at that time had strong competition for SEGA Genesis (known in other regions as the Mega Drive). SNES emulation is robust, with several high quality emulators for different systems, some of which are cycle-specific.

Read More about SNES Emulators on this page.

2- Game Boy Advance Emulators (GBA Emulators):

The Game Boy Advance (often abbreviated as GBA) is a 32-bit portable video game console developed by Nintendo. This is the successor of the Game Boy Color. It was published on March 21, 2001 in Japan. in North America on June 11, 2001; It has an ARM7TDMI processor of 16.78 MHz and a Zilog Z80 processor at 8 and 4 MHz. It has 32 KB of RAM and 96 KB of VRAM.

Read More about GameBoy Advance Emulators (GBA Emulators).

3- PlayStation Emulators (PSX Emulator):

The PlayStation (often called PS1) is a fifth-generation console marketed by Sony Computer Entertainment on December 3, 1994 in Japan and September 9, 1995 in the United States. It was sold for $ 299.99. It had an R3000 processor (used by NASA to take photos of Mars because it was reliable) at 33.86 MHz with 2 MB of RAM and 1 MB of VRAM. It uses a proprietary MDEC video compression unit built into the processor, making it possible to play better moving videos of better quality than other generations of their generation consoles. In fact, stereo sound was better than other stereo systems at the same time. It was a commercial success, partly because it was relatively easy to program at the time and its CD support was cheaper than the competition.

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4- NES Emulators:

Nintendo Entertainment System (NES) is a third-generation 8-bit console marketed July 15, 1983 in Japan (Family Computer or Famicom) and October 18, 1985 in the United States. It was sold for $ 179.99. It had a Ricoh 2A03 processor with 1.79 MHz and 2 KB of RAM. The first games released on Famicom had significant hardware limitations due to the design of Famicom: limited memory addressing (which meant that the games had a small maximum ROM size), because the graphics were loaded on the screen, only the native graphics Sound processing is available, no backup ... To solve this problem, Nintendo has found two solutions:

The FDS (Family Computer Disk System), an add-on for Japan only, allows games to be played from a half-custom version of the Mitsumi Quick-Disk format. It offered a slightly higher data memory and slightly improved sound processing. There was also a microphone that could not be found anywhere else. It was planned to publish it in the United States. However, as the launch of the NES was postponed until the end of 1985 and the Mapper solution was obsolete, the extension was never exported and some of its proprietary products were carried as regular cartridge outlets.
Memory Management Controller (MMC), commonly called mapper. They solved each of the above problems by switching the bank to a lot more data, integrated FM audio chips, and so on. Most of the games released after 1986, which really pushed the limits of the system, used Mapper. A similar solution was used for the Game Boy.
The emulation for the NES is robust and contains many high quality emulators for different systems.

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5- Nintendo DS Emulators:

The Nintendo DS (NDS) is a Nintendo portable console with 2 ARM processors and 4 MB of RAM produced on November 21, 2004. The main selling point was the use of two game screens, including a touch screen. This is the only console to be on the verge of selling on the PlayStation 2 for life (154.02 million units), as a large number of casual players and even non-players have been added to the player community.

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