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Nintendo Entertainment System
Nintendo Family Computer (Famicom)
Manufacturer Nintendo
Type Video game console
Generation Third generation (8-bit era)
Retail availability JP July 15, 1983
US October 18, 1985
CA February 3, Template:Vgy
EU September 1, 1986Template:Cref
EU / AUS Template:VgyTemplate:Cref
Discontinued US 1995
JP September 2003
Units sold 61.91 million[1]
Media ROM cartridge ("Game Pak")Template:Cref
CPU Ricoh 2A03 8-bit processor (MOS Technology 6502 core)
Controller input 2 controller portsTemplate:Cref
1 expansion slot
Best-selling game Super Mario Bros. (pack-in), 40.23 million (as of 1999)[2]
Super Mario Bros. 3, 18 million (as of May 21, 2003)[3]
Predecessor Color TV Game
Successor Super Nintendo Entertainment System

The Nintendo Entertainment System (abbreviated to NES or Nintendo) is an 8-bit video game console that was released by Nintendo in North America, Europe and Australia in Template:Vgy. In most of Asia, including Japan (where it was first launched in Template:Vgy), China, Vietnam, Singapore and Hong Kong, it was released as the Family Computer (ファミリーコンピュータ?), commonly abbreviated as the Famicom (ファミコン? Template:Audio, or FC for short). In South Korea, it was known as the Hyundai Comboy (현대 컴보이) and was distributed by Hyundai Electronics. In Russia, an unlicensed clone was manufactured called Dendy (Де́нди). Similarly in India, clones were popular by the names of Little Master and Wiz Kid[4] It was succeeded by the Super Nintendo Entertainment System.

As the best-selling gaming console of its time,[5]Template:Cref the NES helped revitalize the US video game industry following the video game crash of 1983,[6] and set the standard for subsequent consoles in everything from game designTemplate:Cref to controller layout.Template:Cref In addition, with the NES, Nintendo introduced a now-standard business model of software licensing for third-party developers.[7]

History Edit

Following a series of arcade game successes in the early 1980s, Nintendo made plans to produce a cartridge-based console. Masayuki Uemura designed the system, which was released in Japan on July 15, 1983 for ¥145,800 alongside three ports of Nintendo's successful arcade games Donkey Kong, Donkey Kong Jr. and Popeye. The Family Computer (or Famicom) was slow to gather momentum; a bad chip set caused the initial release of the system to crash. Following a product recall and a reissue with a new motherboard, the Famicom’s popularity soared, becoming the best-selling game console in Japan by the end of 1984.[8]

Encouraged by these successes, Nintendo soon turned its attention to the North American market. Nintendo entered into negotiations with Atari to release the Famicom under Atari’s name as the name Nintendo Advanced Video Gaming System; however, this deal eventually fell apart.[9][10]Template:Cref Subsequent plans to market a Famicom console in North America featuring a keyboard, cassette data recorder, wireless joystick controller and a special BASIC cartridge under the name "Nintendo Advanced Video System" likewise never materialized.[11]

In June 1985, Nintendo unveiled its American version of the Famicom at the Consumer Electronics Show (CES). It rolled out its first systems to limited American markets starting in New York City on October 18, 1985, following up with a full-fledged North American release of the console in February of the following year.[12] Nintendo simultaneously released eighteen launch titles: 10-Yard Fight, Baseball, Clu Clu Land, Donkey Kong Jr. Math, Duck Hunt, Excitebike, Golf, Gyromite, Hogan’s Alley, Ice Climber, Kung Fu, Mach Rider, Pinball, Stack-Up, Super Mario Bros., Tennis, Wild Gunman and Wrecking Crew[13]. To speed production for the holiday season, some varieties of these launch games contained Famicom chips with an adapter so they would play on North American consoles[14].

In Europe and Australia, the system was released to two separate marketing regions (A and B). Distribution in region B, consisting of most of mainland Europe (excluding Italy), was handled by a number of different companies, with Nintendo responsible for most cartridge releases; most of region B saw a 1986 release. Mattel handled distribution for region A, consisting of the United Kingdom, Ireland, Italy, Australia and New Zealand, starting the following year. Not until 1990 did Nintendo's newly created European branch take over distribution throughout Europe.[15] Despite the system’s lackluster performance outside of Japan and North America, by 1990 the NES had outsold all previously released consoles worldwide.[16] The Nintendo Entertainment System was not available in Eastern Bloc countries such as East Germany, the Soviet Union and Yugoslavia.

As the 1990s dawned, however, renewed competition from technologically superior systems such as the 16-bit Sega Mega Drive\Genesis marked the end of the NES’s dominance. Eclipsed by Nintendo's own Super Nintendo Entertainment System (SNES), the NES’s user base gradually waned. Nintendo continued to support the system in North America through the first half of the decade, even releasing a new version of the system's console, the NES-101 model (known as the HVC-101 in Japan), to address many of the design flaws in the original console hardware.[17] The final games released for the system were as follows: in Japan, Takahashi Meijin no Bōken Jima IV (the last game in the Adventure Island series for the system) and, in North America, among unlicensed titles, Sunday Funday was the last, whereas Wario's Woods was the last licensed game (also the only one with an ESRB rating).[18] In the wake of ever decreasing sales and the lack of new software titles, Nintendo of America officially discontinued the NES by 1995. Despite this, Nintendo of Japan kept producing new Nintendo Famicom units up until September 2003,[19] when it discontinued the line. Even as developers ceased production for the NES, a number of high-profile video game franchises and series for the NES were transitioned to newer consoles and remain popular to this day. Nintendo's own Super Mario Bros., The Legend of Zelda and Metroid franchises debuted on the NES, as did Capcom's Mega Man franchise, Konami's Castlevania franchise and Square Soft's Final Fantasy and Enix's Dragon Quest (now Square Enix's) franchises.

Nintendo of Japan continued to repair Famicom consoles until October 31, 2007, attributing the decision to discontinue support to an increasing shortage of the necessary parts.[20][21][22]

Emma Watson would later port some Game Boy games to the NES, including the Pokémon Red and Blue games, Kirby's Dream Land, Super Mario Land, and Metroid II: The Return of Samus. These ports were made under license from Nintendo, and each game was sold at select video game dealers in the United States and Japan

North American bundle packages Edit

For its North American release in 1985, the NES was released in two different configurations, or "bundles". The console itself was identical, but each bundle was packaged with different game paks and accessories. The first of these sets, the Control Deck, retailed from US$199.99 and included the console itself, two game controllers, and was sometimes packaged with the Super Mario Bros. game pak. The Deluxe Set retailed for US$249.99 and consisted of the console, a R.O.B. accessory, an NES Zapper (Light gun) and two game paks: Duck Hunt and Gyromite.

For the remainder of the NES's commercial lifespan in North America, Nintendo frequently repackaged the console in new configurations to capitalize on newer accessories or popular game titles. The NES Action Set, released in November 1988 for US$149.99,[23] replaced the Deluxe Set, and included the console, the NES Zapper, two game controllers and a multicart version of Super Mario Bros. and Duck Hunt. The Action Set became the most successful of the packages released by Nintendo. One month later, in December 1988, to coincide with the release of the Power Pad floor mat controller, Nintendo released a new Power Set bundle, consisting of the console, the Power Pad, the NES Zapper, two controllers and a multicart containing Super Mario Bros., Duck Hunt and World Class Track Meet.[24] In 1990, a Sports Set bundle was released, including the console, an NES Satellite infrared wireless multitap adapter, four game controllers and a multicart featuring Super Spike V'Ball and Nintendo World Cup.[15]

Two more bundle packages were released using the original model NES console. The Challenge Set included the console, two controllers and a Super Mario Bros. 3 game pak. The Basic Set, first released in 1987, included only the console and two controllers with no pack-in cartridge. Instead, it contained a book called the Official Nintendo Player's Guide, which contained detailed information for every NES game made up to that point. Finally, the console was redesigned for both the North American and Japanese markets as part of the final Nintendo-released bundle package. The console was released under the name Control Deck in North America and AV Family Computer in Japan. The package included the new style console and one redesigned "dogbone" game controller. Released in October 1993 in North America, this final bundle retailed for US$49.99 and remained in production until the discontinuation of the NES in 1995.[17]

Regional differences Edit

Although the Japanese Famicom, North American and European NES versions included essentially the same hardware, there were certain key differences between the systems:

  • Different case design. The Famicom featured a top-loading cartridge slot, a 15-pin expansion port located on the unit’s front panel for accessories (as the controllers were hard-wired to the back of the console) and a red and white color scheme. The NES featured a front-loading cartridge slot and a more subdued gray, black and red color scheme. An expansion port was found on the bottom of the unit and the cartridge connector pinout was changed.
  • 60-pin vs. 72-pin cartridges. The original Famicom and the re-released AV Family Computer both utilized a 60-pin cartridge design, which resulted in smaller cartridges than the NES, which utilized a 72-pin design. Four pins were used for the 10NES lockout chip.[25] Ten pins were added that connected a cartridge directly to the expansion port on the bottom of the unit. Finally, two pins that allowed cartridges to provide their own sound expansion chips were removed. Many early games (such as Stack-Up) released in North America were simply Famicom cartridges attached to an adapter (such as the T89 Cartridge Converter) to allow them to fit inside the NES hardware. Nintendo did this to reduce costs and inventory by using the same cartridge boards in North America and Japan. The cartridge dimensions of the original Famicom measured in at 5.3x3 inches, compared with 4.1x5.5 in. for its North American redesign[26].
  • Peripherals. A number of peripheral devices and software packages were released for the Famicom. Few of these devices were ever released outside of Japan.
    • Family BASIC is an implementation of BASIC for the Famicom. It allowed the user to program their own games.
    • Famicom MODEM is a modem that allowed connection to a Nintendo server which provided content such as jokes, news (mainly about Nintendo), game tips and weather reports for Japan; it also allowed a small number of programs to be downloaded. A modem was, however, tested in the United States, by the Minnesota State Lottery. It would have allowed players to buy scratchcards and play the lottery with their NES. It was not released in the United States because some parents and legislators voiced concern that minors might learn to play the lottery illegally and anonymously, despite assurances from Nintendo to the contrary.[27]
  • External sound chips. The Famicom had two cartridge pins that allowed cartridges to provide external sound enhancements. They were originally intended to facilitate the Famicom Disk System’s external sound chip. These pins were removed from the cartridge port of the NES and relocated to the bottom expansion port. As a result, individual cartridges could not make use of this functionality and many NES localizations suffered from technologically inferior sound compared to their equivalent Famicom versions. Castlevania III: Dracula's Curse is a notable example of this problem.
  • Hardwired controllers. The Famicom’s original design includes hardwired, non-removable controllers. In addition, the second controller featured an internal microphone for use with certain games and lacked SELECT and START buttons. Both the controllers and the microphone were subsequently dropped from the redesigned AV Famicom in favor of the two seven-pin controller ports on the front panel used in the NES from its inception.
  • Lockout circuitry. The Famicom contained no lockout hardware and, as a result, unlicensed cartridges (both legitimate and bootleg) were extremely common throughout Japan and the Far East. The original NES (but not the top-loading NES-101) contained the 10NES lockout chip, which significantly increased the challenges faced by unlicensed developers. Tinkerers at home in later years discovered that disassembling the NES and cutting the fourth pin of the lockout chip would change the chip’s mode of operation from "lock" to "key", removing all effects and greatly improving the console’s ability to play legal games, as well as bootlegs and converted imports.[28] NES consoles sold in different regions had different lockout chips, so games marketed in one region would not work on consoles from another region. Known regions are: USA/Canada (3193 lockout chip), most of Europe (3195), Asia (3196) and UK, Italy and Australia (3197). Since two types of lockout chip were used in Europe, European NES game boxes often had an "A" or "B" letter on the front, indicating whether the game is compatible with UK/Italian/Australian consoles (A), or the rest of Europe (B).[15] Rest-of-Europe games typically had text on the box stating "This game is not compatible with the Mattel or NES versions of the Nintendo Entertainment System". Similarly, UK/Italy/Australia games stated "This game is only compatible with the Mattel or NES versions of the Nintendo Entertainment System".
  • Audio/video output. The original Famicom featured an RF modulator plug for audio/video output, while the original NES featured both an RF modulator and RCA composite output cables. The AV Famicom featured only RCA composite output and the top-loading NES 2 featured only RF modulator output. The original North American NES was the first and one of the only game consoles to feature direct composite video output, and thus having the ability to be connected to a composite monitor.
  • Third-party cartridge manufacturing. In Japan, six companies, namely Nintendo, Konami, Capcom, Namco, Bandai and Jaleco, manufactured the cartridges for the Famicom. This allowed these companies to develop their own customized chips designed for specific purposes, such as Konami's VRC 6 and VRC 7 sound chips that increased the quality of sound in their games.
  • European "Mattel" and "NES" Versions. In the UK, Italy and Australia, two versions of the NES were released, the "Mattel Version" and "NES Version".[29] When the NES was first released in those countries, it was distributed by Mattel and Nintendo decided to use a lockout chip specific to those countries, different from the chip used in other European countries. When Nintendo took over European distribution in 1990, they produced consoles that were then labelled "NES Version". The differences between the two are the text on the front flap, a smoother finish on the top and bottom of the "MATTEL Version" console and being compatible with US and Canadian NES systems.

Game controllers Edit

The game controller used for both the NES and the Famicom featured an oblong brick-like design with a simple four button layout: two round buttons labelled "A" and "B", a "START" button and a "SELECT" button. Additionally, the controllers utilized the cross-shaped joypad, designed by Nintendo employee Gunpei Yokoi for Nintendo Game & Watch systems, to replace the bulkier joysticks on earlier gaming consoles’ controllers.

The original model Famicom featured two game controllers, both of which were hardwired to the back of the console. The second controller lacked the START and SELECT buttons, but featured a small microphone. Relatively few games made use of this feature. The earliest produced Famicom units initially had square A and B buttons.[30] This was changed to the circular designs because of the square buttons being caught in the controller casing when pressed down and glitches within the hardware causing the system to freeze occasionally while playing a game.

The NES dropped the hardwired controllers, instead featuring two custom 7-pin ports on the front of the console. Also in contrast to the Famicom, the controllers included with the NES were identical to each other—the second controller lacked the microphone that was present on the Famicom model and possessed the same START and SELECT buttons as the primary controller. Some NES localizations of games, such as The Legend of Zelda, which required the use of the Famicom microphone in order to kill certain enemies (indicated during the course of the game via dungeon hints), suffered from a lack of a hardware to do so Template:Citation needed.

A number of special controllers designed for use with specific games were released for the system, though very few such devices proved particularly popular. Such devices included, but were not limited to, the NES Zapper (a light gun), the Power Pad, the R.O.B., the LaserScope, the Vaus and the Power Glove. The original Famicom featured a deepened DA-15 expansion port on the front of the unit, which was used to connect most auxiliary devices. On the NES, these special controllers were generally connected to one of the two control ports on the front of the unit.

Near the end of the NES's lifespan, upon the release of the AV Famicom and the top-loading NES 2, the design of the game controllers was modified slightly. Though the original button layout was retained, the redesigned device abandoned the "brick" shell in favor of a "dog bone" shape reminiscent of the controllers of the Super Nintendo Entertainment System. In addition, the AV Famicom joined its international counterpart and dropped the hardwired controllers in favor of detachable controller ports. However, the controllers included with the Famicom AV, despite being the "dog bone" type, had cables which were a short three feet long, as opposed to the standard six feet of NES controllers.

In recent years, the original NES controller has become one of the most recognizable symbols of the console. Nintendo has mimicked the look of the controller in several recent products, from promotional merchandise to limited edition versions of the Game Boy Advance SP and Game Boy Micro handheld game consoles.

Hardware design flaws Edit

When Nintendo released the NES in the United States, the design styling was deliberately different from that of other game consoles. Nintendo wanted to distinguish its product from those of competitors and to avoid the generally poor reputation that game consoles had acquired following the video game crash of 1983. One result of this philosophy was a front-loading zero insertion force (ZIF) cartridge socket designed to resemble the front-loading mechanism of a VCR. The ZIF connector worked quite well when both the connector and the cartridges were clean and the pins on the connector were new. Unfortunately, the ZIF connector was not truly zero insertion force. When a user inserted the cartridge into the NES, the force of pressing the cartridge down and into place bent the contact pins slightly, as well as pressing the cartridge’s ROM board back into the cartridge itself. Repeated insertion and removal of cartridges caused the pins to wear out relatively quickly and the ZIF design proved far more prone to interference by dirt and dust than an industry-standard card edge connector.[31] Exacerbating the problem was Nintendo’s choice of materials; the slot connector that the cartridge was actually inserted into was highly prone to corrosion.[32] Add-on peripherals like the popular Game Genie cheat cartridge tended to further exacerbate this problem by bending the front-loading mechanism during gameplay.[33]

Problems with the 10NES lockout chip frequently resulted in the console's most infamous problem: the blinking red power light, in which the system appears to turn itself on and off repeatedly because the 10NES would reset the console once per second. The lockout chip was quite finicky, requiring precise timing in order to permit the system to boot. Dirty, aging and bent connectors would often disrupt the timing, resulting in the blink effect.[34] Alternatively, the console would turn on but only show a solid white, gray, or green screen. Users attempted to solve this problem by blowing air onto the cartridge connectors, licking the edge connector, slapping the side of the system after inserting a cartridge, shifting the cartridge from side to side after insertion, pushing the ZIF up and down repeatedly, holding the ZIF down lower than it should have been and/or cleaning the connectors with alcohol which, observing the back of the cartridge, was not endorsed by Nintendo. Many of the most frequent attempts to fix this problem instead ran the risk of damaging the cartridge and/or system. In 1989, Nintendo released an official NES Cleaning Kit to help users clean malfunctioning cartridges and consoles.

With the release of the top-loading NES-101 (NES 2) toward the end of the NES's lifespan, Nintendo resolved the problems by switching to a standard card edge connector and eliminating the lockout chip. All of the Famicom systems used standard card edge connectors, as did Nintendo’s subsequent game consoles, the Super Nintendo Entertainment System and the Nintendo 64.

In response to these hardware flaws, "Nintendo Authorized Repair Centers" sprang up across the United States. According to Nintendo, the authorization program was designed to ensure that the machines were properly repaired. Nintendo would ship the necessary replacement parts only to shops that had enrolled in the authorization program. In practice, the authorization process consisted of nothing more than paying a fee to Nintendo for the privilege. In a recent trend, many sites have sprung up to offer Nintendo repair parts, guides and services, that replace those formerly offered by the authorized repair centers.

Third-party licensingEdit

Nintendo's near monopoly on the home video game market left it with a degree of influence over the industry exceeding even that of Atari during Atari's heyday in the early 1980s. Unlike Atari, which never actively courted third-party developers (and even went to court in an attempt to force Activision to cease production of Atari 2600 games), Nintendo had anticipated and encouraged the involvement of third-party software developers—but strictly on Nintendo's terms. To this end, a 10NES authentication chip was placed in every console and another was placed in every officially licensed cartridge. If the console's chip could not detect a counterpart chip inside the cartridge, the game would not load. Because Nintendo controlled the production of all cartridges, it was able to enforce strict rules on its third-party developers. Third-party developers were also required to sign a contract by Nintendo that would obligate these parties to develop exclusively for the system. These extremely restricted production runs would end up damaging several smaller software developers: even if demand for their games was high, they could only produce as much profit as Nintendo allowed.[5]

Unlicensed gamesEdit

Several companies, refusing to pay the licensing fee or having been rejected by Nintendo, found ways to circumvent the console's authentication system. Most of these companies created circuits that used a voltage spike to temporarily disable the 10NES chip in the NES. A few unlicensed games released in Europe and Australia came in the form of a dongle that would be connected to a licensed game, in order to use the licensed game's 10NES chip for authentication.

Atari Games created a line of NES products under the name Tengen and took a different approach. The company attempted to reverse engineer the lockout chip to develop its own "Rabbit" chip. However, Tengen also obtained a description of the lockout chip from the United States Patent and Trademark Office by falsely claiming that it was required to defend against present infringement claims in a legal case. Nintendo sued Tengen for copyright infringement, which Tengen lost as it could not prove that the illegally obtained patent documents had not been used by the reverse engineering team. Tengen's antitrust claims against Nintendo were never finally decided.[35]

Following the introduction of the Sega Mega Drive\Genesis, Nintendo began to face real competition in the industry and in the early 1990s was forced to reevaluate its stance towards its developers, many of whom had begun to defect to other systems. When the console was reissued as the NES 2, the 10NES chip was omitted as a cost-saving measure. Games marketed for the NES after that point still included a 10NES chip in order to work with the large installed base of original NES consoles.

Hardware clones Edit

A thriving market of unlicensed NES hardware clones emerged during the heyday of the console's popularity. Initially, such clones were popular in markets where Nintendo never issued a legitimate version of the console. In particular, the Dendy (Template:Lang-ru), an unlicensed hardware clone produced in Taiwan and sold in the former Soviet Union, emerged as the most popular video game console of its time in that setting and it enjoyed a degree of fame roughly equivalent to that experienced by the NES/Famicom in North America and Japan. The Family Game was marketed in Argentina, resembling the original hardware design. The Micro Genius (Simplified Chinese: 小天才) was marketed in Southeast Asia as an alternative to the Famicom, Samurai was the popular PAL alternative to the NES and in Central Europe, especially Poland, the Pegasus was available.[36]

The unlicensed clone market has flourished following Nintendo's discontinuation of the NES. Some of the more exotic of these resulting systems have gone beyond the functionality of the original hardware and have included variations such as a portable system with a color LCD (e.g. PocketFami). Others have been produced with certain specialized markets in mind, including various "educational computer packages" which include copies of some of the NES's educational games and come complete with a clone of the Famicom BASIC keyboard, transforming the system into a rather primitive personal computer.[37] These unauthorized clones have been helped by the invention of the so-called NES-on-a-chip.

As was the case with unlicensed software titles, Nintendo has typically gone to the courts to prohibit the manufacture and sale of unlicensed cloned hardware. Many of the clone vendors have included built-in copies of licensed Nintendo software, which constitutes copyright infringement in most countries. As recently as 2004, Nintendo of America has filed suits against manufacturers of the Power Player Super Joy III, an NES clone console that had been sold in North America, Europe and Australia.

Although most hardware clones were not produced under license by Nintendo, certain companies were granted licenses to produce NES-compatible devices. The Sharp Corporation produced at least two such clones: the Twin Famicom and the SHARP 19SC111 television. The Twin Famicom was compatible with both Famicom cartridges and Famicom Disk System disks. It was available in two colors (red and black) and used hardwired controllers (as did the original Famicom), but it featured a different case design. The SHARP 19SC111 television was a television which included a built-in Famicom.[38] A similar licensing deal was reached with Hyundai Electronics, who licensed the system under the name Comboy in the South Korean market. This deal with Hyundai was made necessary because of the South Korean government's wide ban on all Japanese "cultural products", which remained in effect until 1998 and ensured that the only way Japanese products could legally enter the South Korean market was through licensing to a third-party (non-Japanese) distributor (see also Japan–Korea disputes).[39]

Technical specifications Edit

Original chassis/casing Edit

The original Japanese Famicom was predominantly white plastic, with dark red trim. It featured a top-loading cartridge slot and grooves on both sides of the deck in which the hardwired game controllers could be placed when not in use.

The original version of the North American NES used a radically different design. The NES's color scheme was two different shades of gray, with black trim. The top-loading cartridge slot was replaced with a front-loading mechanism. The slot is covered by a small, hinged door that can be opened to insert or remove a cartridge and closed at other times. The dimensions of this model are 10" width by 8" length by 3.5" height. When opened, the cartridge slot door adds an additional 1" height to the unit. Due to its bulky, square design and slot-loading functionality, the original NES chassis is often referred to as the "Toaster".

Plastic flaws Edit

All versions of the NES (including the Famicom) were made of an inferior plastic which contained bromine, an additive that was intended to keep it from catching fire. This additive caused the light gray console plastic (including the controllers) to fade towards yellow over time due to UV-rays which the additive reacts to. Over time, the plastic will "oxidize", producing a yellow tint and making the plastic brittle. Keeping the console out of the sun's UV-rays will prolong the console's normal color, but if the console has "yellowed", removing the color is difficult. The only way to get rid of the color to use the Retr0bright solution, but spray painting the case may be an easier option. Another method to clean the yellowed plastic is by cleaning it with a cloth, and an aerosol type spray foam oven cleaner product. It is very effective, requiring only a little bit of the product and a few wipes to bring a badly yellowed console back to like-new condition. The only thing to watch out for is the red lettering. The product will also remove the lettering, though, not as easily as the UV stains.

Redesigned model Edit

File:Consola NES 2.jpg

The NES-101 model of the Nintendo Entertainment System (HVC-101 model in Japan), known informally as the "top-loader", uses the same basic color scheme, although there are several subtle differences. The power switch is colored a bright red and slides into the on and off position, similar to the SNES, instead of the original push-button. Also, there is no LED power indicator on the unit. Like the original Family Computer, it uses a top-loading cartridge slot. The NES-101 model was redesigned after the (also top loading) SNES and indeed they share many of the same design cues. The NES-101 model is considerably more compact than the original NES-001 model, measuring 6" by 7" by 1.5". The NES-101 model offered only RF outputs instead of the RF and RCA (mono) outputs offered on the original NES-001 model, whereas the HVC-101 model of the Family Computer offered RCA connectors only.

Cartridges Edit

File:Jeux NES 2.jpg

All officially licensed North American (NTSC) and European (PAL) cartridges, or "carts", are 5.25" (13.3 cm) tall, 4.75" (12 cm) wide and .75" (2 cm) thick. Originally, NES carts were held together with 5 small, slotted screws. Later games (post-1987) were redesigned slightly to incorporate two plastic clips molded into the plastic itself, eliminating the need for the top two screws.[40] This is why older NES carts are referred to as "5-screw" and are distinguishable by their flat tops and, as the name suggests, five screws instead of three. Around this time, the standard screws were changed to 3.8 mm security screws to further secure the ROMs inside from tampering. The back of the cartridge bears a label with instructions on handling. These labels were gray for standard games and gold (or in rare cases silver) for games that featured battery backup. With the exception of The Legend of Zelda and Zelda II: The Adventure of Link, which were available in gold-plastic carts, all licensed NTSC and PAL cartridges were a standard shade of gray plastic. Unlicensed carts were produced in black (Tengen, American Video Entertainment and Wisdom Tree), robin egg blue (Color Dreams and Wisdom Tree) and gold (Camerica) and were all slightly different shape and style than a standard NES cart. Nintendo also produced yellow-plastic carts for internal use at Nintendo Service Centers, although these "test carts" were never made available for purchase by consumers.

Japanese (Famicom) cartridges are shaped slightly differently, measuring only 3" (7.6 cm) in length, but 5.3" (13.5 cm) in width. While the NES used a 72-pin interface, the Famicom system used a 60-pin design. Some early NES games (most commonly Gyromite) were actually 60-pin Famicom PCBs and ROMs with a built-in converter.[41] Unlike NES games, official Famicom carts were produced in many colors of plastic. Adapters, similar in design to the popular accessory Game Genie, are available that allow Famicom games to be played on an NES.

Central processing unitEdit

File:RP2A07.jpg

For its central processing unit (CPU), the NES uses an 8-bit microprocessor produced by Ricoh based on a MOS Technology 6502 core. It incorporates custom sound hardware and a restricted DMA controller on-die. To save some space on the silicon, the Ricoh CPU omitted the 6502's BCD (binary coded decimal) command. NTSC (North America and Japan) versions of the console use the Ricoh 2A03 (or RP2A03), which runs at 1.79 MHz.[42] PAL (Europe and Australia) versions of the console utilize the Ricoh 2A07 (or RP2A07), which is identical to the 2A03 save for the fact that it runs at a slower 1.66 MHz clock rate and has its sound hardware adjusted accordingly.[43]

MemoryEdit

The NES contains 2 KB of onboard work RAM. A game cartridge may contain expanded RAM to increase this amount. It also has 2 KB of video RAM for the use of the picture processing unit (PPU), 256 bytes of sprite RAM and some palette RAM. The system supports up to 32 KB of program ROM at a time, but this can be expanded by orders of magnitude by the process of bank switching. Additionally, cartridges may contain 8 KB of SRAM and 8,168 bytes (nearly 8 KB) of address space reserved as "Expansion Area." Expanded Video memory (VROM or VRAM) may also be available on the cartridge (on-cartridge mapping hardware also allowing further Video expansion past 12 KB).[42]

VideoEdit

The NES uses a custom-made Picture Processing Unit (PPU) developed by Ricoh. The version of the processor used in NTSC models of the console, named the RP2C02, operates at 5.37 MHz, while the version used in PAL models, named the RP2C07, operates at 5.32 MHz.[43] Both the RP2C02 and RP2C07 output composite video.[42] Special versions of the NES's hardware designed for use in video arcades use other variations of the PPU. The PlayChoice-10 uses the RP2C03, which runs at 5.37 MHz and outputs RGB video at NTSC frequencies. Two different variations were used for Nintendo Vs. Series hardware: the RP2C04 and the RP2C05. Both of these operate at 5.37 MHz and output RGB video at NTSC frequencies. Additionally, both use irregular palettes to prevent easy ROM swapping of games.[44]

All variations of the PPU feature 2 KiB of video RAM, 256 bytes of on-die sprite position / attributable RAM (object attribute memory or OAM) and 28 bytes of on-die palette RAM to allow selection of background and sprite colors. This memory is stored on separate buses internal to the PPU. The console's 2 KiB of onboard RAM may be used for tile maps and attributes on the NES board and 8 KiB of tile pattern ROM or RAM may be included on a cartridge. Using bank switching, virtually any amount of additional cartridge memory can be used, limited only by manufacturing costs.[42]

The system has an available color palette of 48 colors and 5 grays. Red, green and blue can be individually darkened at specific screen regions using carefully timed code. Up to 24 colors may be used on one scan line: a background color, four sets of three tile colors and four sets of three sprite colors. This total does not include color de-emphasis.[42]

A total of 64 sprites may be displayed onscreen at a given time without reloading sprites mid-screen. Sprites may be either 8 pixels by 8 pixels, or 8 pixels by 16 pixels, although the choice must be made globally and it affects all sprites. Up to eight sprites may be present on one scanline, using a flag to indicate when additional sprites are to be dropped. This flag allows the software to rotate sprite priorities, increasing maximum amount of sprites, but typically causing flicker.[42]

The PPU allows only one scrolling layer, though horizontal scrolling can be changed on a per-scanline basis. More advanced programming methods enable the same to be done for vertical scrolling.[42]

The standard display resolution of the NES is 256 horizontal pixels by 240 vertical pixels. Typically, games designed for NTSC-based systems had an effective resolution of only 256 by 224 pixels, as the top and bottom 8 scanlines are not visible on most television sets. For additional video memory bandwidth, it was possible to turn off the screen before the raster reached the very bottom.[42]

Video output connections varied from one model of the console to the next. The original HVC-001 model of the Family Computer featured only radio frequency (RF) modulator output. When the console was released in North America and Europe, support for composite video through RCA connectors was added in addition to the RF modulator. The HVC-101 model of the Famicom dropped the RF modulator entirely and adopted composite video output via a proprietary 12-pin "multi-out" connector first introduced for the Super Famicom / Super Nintendo Entertainment System. Conversely, the North American re-released NES-101 model most closely resembled the original HVC-001 model Famicom, in that it featured RF modulator output only.[30] Finally, the PlayChoice-10 utilized an inverted RGB video output.

Audio Edit

The NES board supported a total of five sound channels. These included two pulse wave channels of variable duty cycle (12.5%, 25%, 50% and 75%), with a volume control of sixteen levels and hardware pitch bending supporting frequencies ranging from 54 Hz to 28 kHz. Additional channels included one fixed-volume triangle wave channel supporting frequencies from 27 Hz to 56 kHz, one sixteen-volume level white noise channel supporting two modes (by adjusting inputs on a linear feedback shift register) at sixteen preprogrammed frequencies and one differential pulse-code modulation (DPCM) channel with six bits of range, using 1-bit delta encoding at sixteen preprogrammed sample rates from 4.2 kHz to 33.5 kHz. This final channel was also capable of playing standard pulse-code modulation (PCM) sound by writing individual 7-bit values at timed intervals.[42]

NES Test Station Edit

The NES Test Station is an NES-based unit designed for testing NES hardware, components and games. It was provided for use in World of Nintendo boutiques as part of the Nintendo World Class Service program. Visitors were to bring items to test on the station, often with assistance from a technician or store employee.

The NES Test Station features a Game Pak slot and connectors for testing various components (AC adapter, RF switch, Audio/Video cable, NES Control Deck, controllers and accessories) at the front, with a knob selector in the center to select the component to test. On the front edge are three colored button switches: an illuminated red Power switch, a blue Reset switch and a green switch for alternating between AV and RF connections when testing an NES Control Deck. The different knob selections are:

  • Game Pak Channel (for testing Game Paks)
  • Control Deck and Accessories Channel (includes tests for NES Controllers, the Zapper, R.O.B. and Power Pad)
  • Audio Video Channel
  • AC Adaptor Channel
  • RF Switch Channel
  • System Channel (for testing a Control Deck)

Nintendo later provided an add-on for testing Super NES components and games, named the Super NES Counter Tester.

See also Edit

Notes Edit

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References Edit

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