Famicom Disk System

Family Computer Disk System
	Famicom Disk system attached to Famicom
Manufacturer	Nintendo
Type	Video game console peripheral
Generation	Third generation
Release date	JP: February 21, 1986;
Availability	1986–1990
Discontinued	JP: 1990; JP: September 30, 2003 (software); JP: October 31, 2007 (technical support);
Units sold	4.4 million
Media	112 KB Floppy disks
CPU	Ricoh 2A03 processor;
Memory	32 kB disk cache; 8 kB game RAM
Sound	1 extra channel of wavetable synth facilitated by Ricoh 2C33
Successor	(SNES CD never happened) Nintendo 64 Disk Drive

The Family Computer Disk System,^[a] commonly shortened to the Famicom Disk System,^[b] or just Disk System, is a peripheral for Nintendo's Family Computer home video game console, released only in Japan on February 21, 1986. It uses proprietary floppy disks called "Disk Cards" for cheaper data storage and it adds a new high-fidelity sound channel for supporting Disk System games.

Fundamentally, the Disk System serves simply to enhance some aspects already inherent to the base Famicom system, with better sound and cheaper games—though with the disadvantages of high initial price, slow speed, and lower reliability. However, this boost to the market of affordable and writable mass storage temporarily served as an enabling technology for the creation of new types of video games. This includes the vast, open world, progress-saving adventures of the best-selling The Legend of Zelda (1986) and Metroid (1986), games with a cost-effective and swift release such as the best-selling Super Mario Bros. 2, and nationwide leaderboards and contests via the in-store Disk Fax kiosks, which are considered to be forerunners of today's online achievement and distribution systems.

By 1989, the Famicom Disk System was inevitably obsoleted by the improving semiconductor technology of game cartridges. The Disk System's lifetime sales reached 4.4 million units by 1990, making it the most successful console add-on of all time, despite not being sold outside of Japan. Its final game was released in 1992, its software was discontinued in 2003,^[1] and Nintendo officially discontinued its technical support in 2007.^[2]

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