Western Design Center CMOS 65816 - Moore's Law In Pictures
This chip was a 16-bit upgrade to the company’s popular 8-bit 65C02. It came to be because of a meeting WDC’s CEO took with Apple about a version of the Apple II (IIGS) that would have greater graphics and sound capabilities. Apple wanted a chip just like 65C02, but that could address more memory and store and load 16 bit words. WDC delivered, but also sold the chip to Atari and, eventually, Nintendo, where it was used in the venerable Super Nintendo Entertainment System.