The chip has four revisions, each physically identical but with different microcode. This series of fixed-point digital signal processor chips provides fast vector-based calculations, bitmap conversions, 2D and 3D coordinate transformations, and other functions. The differences are in packaging, pinout, maximum supported ROM size, and internal clock speed. All versions of the Super FX chip are functionally compatible in terms of their instruction set. The final known revision is the GSU-2-SP1. The design was revised to the GSU-2, which is still 16-bit, but this version can support a ROM size greater than 8 Mbit. Both the MARIO CHIP 1 and the GSU-1 can support a maximum ROM size of 8 Mbits. The GSU-1 however runs at the full 21.47 MHz. Both versions are clocked with a 21.47 MHz signal, but an internal clock speed divider halves it to 10.74 MHz on the MARIO CHIP 1. From 1994, some boards have an epoxy version, and later a first revision is labeled GSU-1. This chip has at least four revisions, first as a surface mounted chip labeled "MARIO CHIP 1" (Mathematical, Argonaut, Rotation & I/O), commonly called the Super FX, in the earliest Star Fox (1993) cartridges. Super Mario World 2: Yoshi's Island uses the Super FX 2 for sprite scaling, rotation, and stretching. It is typically programmed to act as a graphics accelerator chip that draws polygons and advanced 2D effects to a frame buffer in the RAM sitting adjacent to it. The Super FX chip is a 16-bit supplemental RISC CPU developed by Argonaut Software. Fortunately, CAPCOM finally realized their mistake years later and decided to develop Mega Man X and its sequels in-house.Super FX renders 3D polygons in Star Fox. Overall, good examples of how to botch a blockbuster console license.
The graphics are dull, and even the innovative gameplay that lets Mega Man transform himself into different robot types can't save these two Mega Man games from mediocrity. a cabbage patch doll gone awry, so to speak. Instead of creating faithful reproductions, Hi-Tech reduced the excellent anime characters that NES fans have come to know and love to laughable animated blobs - with Mega Man himself looking like a broken-doll version of Commander Keen. In one of their worst marketing mistakes, CAPCOM gave the task of converting its hit series to the PC to Hi-Tech Expressions, who botched the job quite badly with both games (for some curious reason, Mega Man 2 was never ported to the PC). Mega Man and Mega Man 3 are two first PC versions of CAPCOM's blockbuster Mega Man ( Rockman in Asia) series of anime platform games.
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