The Super FX is a

coprocessor A coprocessor is a computer processor used to supplement the functions of the primary processor (the CPU). Operations performed by the coprocessor may be floating-point arithmetic, graphics, signal processing, string processing, cryptography or ...

on the Graphics Support Unit (GSU) added to select

Super Nintendo Entertainment System The Super Nintendo Entertainment System, commonly shortened to Super Nintendo, Super NES or SNES, is a Fourth generation of video game consoles, 16-bit home video game console developed by Nintendo that was released in 1990 in Japan, 1991 in No ...

(SNES)

video game A video game or computer game is an electronic game that involves interaction with a user interface or input device (such as a joystick, game controller, controller, computer keyboard, keyboard, or motion sensing device) to generate visual fe ...

cartridges, primarily to facilitate advanced 2D and 3D graphics. The Super FX chip was designed by

Argonaut Games Argonaut Games is a British video game developer founded in 1982. It was known for the Super NES video game '' Star Fox'' and its supporting Super FX chip, and for '' Croc: Legend of the Gobbos'' and the '' Starglider'' series. The company wa ...

, who also co-developed the 3D space

rail shooter Rail shooter, also known as on-rails shooter, is a subgenre of shoot 'em up video game. Beginning with arcade games such as the 1985 '' Space Harrier'', the gameplay locks the player character into a set path, only allowing for limited or no di ...

Star Fox ''Star Fox'' is a rail shooter, space flight simulator, and third person action-adventure video game series created by Shigeru Miyamoto and developed and published by Nintendo. The games follow the Star Fox combat team of anthropomorphic a ...

'' with

Nintendo is a Japanese Multinational corporation, multinational video game company headquartered in Kyoto. It develops, publishes, and releases both video games and video game consoles. The history of Nintendo began when craftsman Fusajiro Yamauchi ...

to demonstrate the additional

polygon In geometry, a polygon () is a plane figure made up of line segments connected to form a closed polygonal chain. The segments of a closed polygonal chain are called its '' edges'' or ''sides''. The points where two edges meet are the polygon ...

rendering capabilities that the chip had introduced to the SNES.

History

The Super FX chip design team included engineers Ben Cheese, Rob Macaulay, and James Hakewill. While in development, the Super FX chip was codenamed "Super Mario FX" and "

MARIO Mario (; ) is a Character (arts), character created by the Japanese game designer Shigeru Miyamoto. He is the star of the ''Mario (franchise), Mario'' franchise, a recurring character in the ''Donkey Kong'' franchise, and the mascot of the Ja ...

". "MARIO", a

backronym A backronym is an acronym formed from an already existing word by expanding its letters into the words of a phrase. Backronyms may be invented with either serious or humorous intent, or they may be a type of false etymology or folk etymology. The ...

for "Mathematical, Argonaut, Rotation, & Input/Output", is printed on the face of the final production chip. The chip's name would lead to an

urban legend Urban legend (sometimes modern legend, urban myth, or simply legend) is a genre of folklore concerning stories about an unusual (usually scary) or humorous event that many people believe to be true but largely are not. These legends can be e ...

that "Super Mario FX" was a video game in development for the SNES. Because of high manufacturing costs and increased development time, few Super FX based games were made compared to the rest of the SNES library. Due to these increased costs, Super FX games often retailed at a higher

MSRP The list price, also known as the manufacturer's suggested retail price (MSRP), or the recommended retail price (RRP), or the suggested retail price (SRP) of a product is the price at which its manufacturer notionally recommends that a retailer ...

compared to other SNES games. According to

founder

Jez San Jeremy Elliott "Jez" San OBE (born 29 March 1966) is an English game programmer and entrepreneur who founded Argonaut Software as a teenager in the 1980s. He is best known for the 1986 Atari ST game ''Starglider'' and helping to design the Su ...

, Argonaut had initially intended to develop the Super FX chip for the

Nintendo Entertainment System The Nintendo Entertainment System (NES) is an 8-bit home video game console developed and marketed by Nintendo. It was first released in Japan on 15 July 1983 as the and was later released as the redesigned NES in several test markets in the ...

. The team programmed an NES version of the first-person combat flight simulator ''

Starglider ''Starglider'' is a 3D video game published in 1986 by Rainbird. It was developed by Jez San under his company name Argonaut Software. The game is a fast-moving, first-person combat flight simulator, rendered with colourful wireframe vector ...

'', which Argonaut had developed for the

Atari ST Atari ST is a line of personal computers from Atari Corporation and the successor to the company's Atari 8-bit computers, 8-bit computers. The initial model, the Atari 520ST, had limited release in April–June 1985, and was widely available i ...

and other home computers a few years earlier, and showed it to Nintendo in 1990. The prototype impressed the company, but they suggested that they develop games for the then-unreleased Super Famicom due to the NES's hardware becoming outdated in light of newer systems such as the

Sega Genesis/Mega Drive The Sega Genesis, known as the outside North America, is a 16-bit Fourth generation of video game consoles, fourth generation home video game console developed and sold by Sega. It was Sega's third console and the successor to the Master Sys ...

and the TurboGrafx-16/PC Engine. Shortly after the 1990

Consumer Electronics Show CES (; formerly an initialism for Consumer Electronics Show) is an annual trade show organized by the Consumer Technology Association (CTA). Held in January at the Las Vegas Convention Center in Winchester, Nevada, United States, the event typi ...

held in

Chicago, Illinois Chicago is the List of municipalities in Illinois, most populous city in the U.S. state of Illinois and in the Midwestern United States. With a population of 2,746,388, as of the 2020 United States census, 2020 census, it is the List of Unite ...

, Argonaut ported the NES version of ''Starglider'' to the Super Famicom, a process which took roughly one week according to San.

Function

The Super FX chip is used to render 3D

polygons In geometry, a polygon () is a plane figure made up of line segments connected to form a closed polygonal chain. The segments of a closed polygonal chain are called its '' edges'' or ''sides''. The points where two edges meet are the polygon' ...

and to assist the

SNES The Super Nintendo Entertainment System, commonly shortened to Super Nintendo, Super NES or SNES, is a 16-bit home video game console developed by Nintendo that was released in 1990 in Japan, 1991 in North America, 1992 in Europe and Oceania an ...

in rendering advanced 2D effects. This custom-made

RISC In electronics and computer science, a reduced instruction set computer (RISC) is a computer architecture designed to simplify the individual instructions given to the computer to accomplish tasks. Compared to the instructions given to a comp ...

processor is typically programmed to act like a graphics accelerator chip that draws polygons to a

frame buffer A framebuffer (frame buffer, or sometimes framestore) is a portion of random-access memory (RAM) containing a bitmap that drives a video display. It is a memory buffer containing data representing all the pixels in a complete video frame. Mode ...

in the

RAM Ram, ram, or RAM most commonly refers to: * A male sheep * Random-access memory, computer memory * Ram Trucks, US, since 2009 ** List of vehicles named Dodge Ram, trucks and vans ** Ram Pickup, produced by Ram Trucks Ram, ram, or RAM may also ref ...

that sits adjacent to it. The data in this frame buffer is periodically transferred to the main video memory inside of the console using DMA in order to show up on the television display. The first version of the chip, commonly referred to as simply "Super FX", is clocked with a 21.4

MHz The hertz (symbol: Hz) is the unit of frequency in the International System of Units (SI), often described as being equivalent to one event (or cycle) per second. The hertz is an SI derived unit whose formal expression in terms of SI base u ...

signal, but an internal clock speed divider halves it to 10.7 MHz. Later on, the design was revised to become the Super FX GSU (Graphics Support Unit); this, unlike the first Super FX chip revision, is able to reach 21 MHz. All versions of the Super FX chip are functionally compatible in terms of their instruction set. The differences arise in how they are

packaged Packaging is the science, art and technology of enclosing or protecting products for distribution, storage, sale, and use. Packaging also refers to the process of designing, evaluating, and producing packages. Packaging can be described as a coo ...

, their

pinout In electronics, a pinout (sometimes written "pin-out") is a cross-reference between the contacts, or ''pins'', of an electrical connector or electronic component, and their functions. "Pinout" now supersedes the term "basing diagram" which was the ...

, and their internal clock speed. As a result of changing the package from 100 to 112 pins when creating the GSU-2, more external pins were available and assigned for addressing. As a result, a larger amount of external ROM or RAM can be accessed.

Usage

''Star Fox'' uses the chip for the rendering of hundreds of simultaneous 3D polygons. It uses scaled 2D bitmaps for lasers, asteroids, and other obstacles, but other objects such as ships are rendered with 3D polygons. '' Super Mario World 2: Yoshi's Island'' uses the chip for 2D graphics effects like sprite scaling and stretching. Game cartridges that contain a Super FX chip have additional contacts at the bottom of the cartridge that connect to the extra slots in the cartridge port that are not otherwise typically used. Therefore, Super FX games cannot be plugged into cartridge adapters which predate the release of Super FX games. This includes cheat devices, such as the

Game Genie The Game Genie was a line of Video game accessory, video game accessories that allowed players to alter codes transmitted between ROM cartridge, game cartridges and a video game console, known informally as a cheat cartridge. Developed by Codemas ...

List of games

Unreleased games

* ''

Comanche The Comanche (), or Nʉmʉnʉʉ (, 'the people'), are a Tribe (Native American), Native American tribe from the Great Plains, Southern Plains of the present-day United States. Comanche people today belong to the List of federally recognized tri ...

'' (gameplay looks the same to ''Super FX voxel demo'', but there is no direct connection between both) * '' FX Fighter'' (originally titled ''Fighting Polygon'') * ' (developed at the same time as ''Dirt Racer'') * ''

Star Fox 2 ''Star Fox 2'' is a Rail shooter, rail shooter game developed by Nintendo and Argonaut Games, Argonaut Software and published by Nintendo for the Super Nintendo Entertainment System (SNES). It was completed in 1995 but did not see an official re ...

'' (eventually released with the

Super NES Classic Edition The Super NES Classic Edition is a dedicated home video game console released by Nintendo, which emulates the Super Nintendo Entertainment System. The console, a successor to the NES Classic Edition, comes with twenty-one Super NES titles pre ...

in 2017) * '' Transformers: Generation 2'' (abandoned during development) * ' (prototype that later evolved into '' Croc: Legend of the Gobbos'')

Gallery

MARIO CHIP 1.jpg, MARIO CHIP 1 MARIO CHIP 1 COB.jpg, MARIO CHIP 1 ( COB) GSU-1.jpg, GSU-1 GSU-2.jpg, GSU-2 GSU-2-SP1.jpg, GSU-2-SP1

References

External links

* {{Nintendo hardware, SNES Coprocessors Graphics chips Nintendo chips Nintendo hardware Super Nintendo Entertainment System