Super FX chip in The list of Super NES enhancement chips demonstrates the overall design plan for the, whereby the console's hardware designers had made it easy to interface special chips to the console. This standardized selection of chips was available to increase system performance and features for each game cartridge. As increasingly superior chips became available throughout the SNES's retail market years, this strategy originally provided a cheaper and more versatile way of maintaining the system's market lifespan when compared to Nintendo's option of having included a much more expensive CPU or a more obsolete stock chipset. As a result, various enhancement chips were integrated into the cartridges of select game titles. The presence of an enhancement chip is most often indicated by 16 additional pins on either side of the original pins, 8 to each side.
Main article: The Super FX chip is a 16-bit supplemental CPU developed by that was included in certain game cartridges to perform functions that the main CPU can not feasibly do. It is typically programmed to act as a that draws polygons to a in the sitting adjacent to it. In addition to rendering polygons, the chip is also used to assist the in rendering advanced 2D effects. Uses it for advanced graphics effects like scaling and stretching, 3D objects on screen, huge sprites that allow for characters to take up the whole screen, and multiple foreground and background to give a greater illusion of depth.
This chip went through at least four revisions, first starting out as a labeled 'MARIO CHIP 1' (Mathematical, Argonaut, Rotation & I/O) in the earliest Star Fox cartridges, commonly called the Super FX. The following year, some boards were providing an epoxy version of it, and later a first revision came out under the label 'GSU-1'. Both versions are clocked with a 21 signal, but an internal clock speed divider halves it to 10.5 MHz on the MARIO CHIP 1. The GSU-1 however runs at the full 21 MHz.
Both the MARIO CHIP 1 and the GSU-1 can support a maximum ROM size of 8 Mbits. Later on, the design was revised to become the GSU-2, which is still 16-bit, but unlike the earlier Super FX chips, this version can support a ROM size greater than 8 MBit.
The final known revision is the GSU-2-SP1. 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, their maximum supported ROM size, and their internal clock speed. DSP-1 chip in This series of fixed-point chips allowed for fast vector-based calculations, bitmap conversions, both 2D and 3D coordinate transformations, and other functions. Four revisions of the chip exist, each physically identical but with different.
The DSP-1 version, including the later 1A die shrink and 1B bug fix revisions, was most often used; the DSP-2, DSP-3, and DSP-4 were used in only one title each. All of them are based on the CPU. DSP-1 The DSP-1 is the most varied and widely used of the SNES DSPs, appearing in over 15 separate titles. It is used as a in games such as and that require more advanced scaling and rotation. It also provides fast support for the and calculations needed by 3D math algorithms. The later DSP-1A and DSP-1B serve the same purpose as the DSP-1. The DSP-1A is a die shrink of the DSP-1, and the DSP-1B also corrects several bugs.
DSP-2 The DSP-2 can only be found in the SNES port of. Its primary purpose is to convert image data into the SNES format. It also provides dynamic scaling capability and transparency effects. DSP-3 DSP-3 is an assistant chip, used in only one game for the Japanese Super Famicom, a turn-based strategy game titled SD Gundam GX.
The chip assists with tasks like calculating the next AI move, bitstream decompression, and bitplane conversion of graphics. DSP-4 DSP-4 is used in only one game cartridge,. It primarily assists with drawing the race track, especially during the times that the track branches into multiple paths. Main article: This chip was made by MegaChips exclusively for cartridges for the Super Famicom. The cartridges are equipped with instead of, and were designed to hold games downloaded for a fee from specialized kiosks in Japan.
The chip manages communication with the kiosks to download ROM images, and provides an initial menu to select which of the downloaded games would be played. Some titles were produced both in cartridge and download form, while others were download only.
The service was closed on February 8, 2007. OBC-1 OBC-1 is a sprite manipulation chip used exclusively in the game, the sequel to.
S-DD1 chip in The S-DD1 chip is an decompressor made by for use in some. Sobolsoft license registration key serial. Designed to handle data compressed by ABS Lossless Entropy Algorithm, a form of developed by, its use is necessary in games where massive amounts of sprite data are compressed with a total design limit of 32.
This data is decompressed dynamically by the S-DD1 and given directly to the picture processing unit. The S-DD1 mediates between the Super NES's CPU and the game's via two.
However, the controlling 5A22 processor may still request normal, uncompressed data from the game's ROM even if the S-DD1 is already busy with a decompression operation. This form of allows sprite data to be decompressed while other types of data are quickly passed to the main CPU. And are the only games that use this chip.
Emulation of the S-DD1 initially proved to be difficult, requiring 'graphics packs' to be provided for the affected titles, until the compression algorithm was identified. S-RTC S-RTC is a chip used in one game,. SA1 chip The Super Accelerator 1 (SA1) chip is used in a number of SNES games, including the popular. Similar to the CPU in the SNES console, the SA1 contains a processor core based on the with several programmable timers. The SA1 does not function as a slave CPU for the 5A22; both can interrupt each other independently.
The SA1 also features a range of enhancements over the standard 65C816:. Upgraded 10.74, up from a maximum of 3.58 MHz. Faster, including 2KBytes of internal RAM.
capabilities. Limited data storage and compression. New modes such as to transfer. Arithmetic functions (multiplication, division, and cumulative). Hardware timer (either as a linear 18-bit timer, or synchronised with the PPU to generate an IRQ at a specific H/V scanline location). Built-in CIC lockout, for and regional marketing control. ST010 chip in The ST series of chips are used by to enhance functionality.
ST010 Used for general functions and handling the AI of opponent cars in. Contains a CPU. ST011 ST011 is used for AI functionality in the board game.
It also uses a. ST018 ST018 is used for AI functionality in. It is a 21.47 MHz, 32-bit ARMv3 processor. Retrieved 2011-04-05. ^ (2007-05-01) Snes9x readme.txt v1.51.
2008-08-20 at the. Retrieved on 2007-07-03. Archived from on 2008-07-24.
Overload's Puzzle Sheet. Retrieved 2007-05-09.
Nach; Moe, Lord Nightmare. Archived from on 2007-05-13. Retrieved 2007-05-09. Archived from on 2012-03-07. Retrieved 2007-07-03.
Retrieved 2007-07-03. Retrieved 2014-09-07.
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Retrieved 2014-09-07. SNES Central. Overload's Puzzle Sheet. Retrieved 2007-07-03. Retrieved 2017-05-16. Retrieved 2018-08-02. See also.
are different kinds of special chips designed by various video game developers for use in Nintendo Entertainment System (NES) cartridges.
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