MHz 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, their pinout, and their internal clock speed. As a result of changing the package 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. UsageStar 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. List of games Unreleased games Comanche FX Fighter Powerslide (developed at the same time as Dirt Racer) Star Fox 2 (eventually released with the Super NES Classic Edition in 2017) Transformers: Generation 2 (abandoned during development) Yoshi Racing (prototype that later evolved into Croc: Legend of the Gobbos'') See also List of Super NES enhancement chips ARC (processor) Sega Genesis § Sega Virtua Processor Synopsys § ARC International - continued development Super FX technology References External links Coprocessors Graphics chips Nintendo chips Nintendo hardware Super Nintendo Entertainment System