1.The 2A02 is a 8-bit microprocessor designed by Ricoh. It has a 6502 compatible instruction set, making it compatible with many software and hardware designs from this period. The 2A02 is built from a few dozen components and is capable of executing 8-bit instructions at up to 1.79MHz.
2. The 2A02 was used in several consoles and systems, including the Nintendo Entertainment System, Commodore Vic 20, Atari home computers, and Acorn computers. It is also popular due to its ability to allow the development of homebrew NES software.