Family Computer Disk System

The was released on February 21, 1986 by Nintendo as a peripheral for the Family Computer (or Famicom) console in Japan. It was a unit that used proprietary floppy disks (called "disk cards") for data storage. It was announced, but never released, for the North American Nintendo Entertainment System. Through its entire production span, 1986-2003, 4.5 million units were sold.
The device was connected to the Famicom deck by plugging a modified cartridge known as the RAM Adapter into the system's cartridge port, which attached via a supplied cable to the disk drive. The RAM adapter contained 32 kilobytes of RAM for temporary program storage, 8 kilobytes of RAM for tile and sprite data storage, and an ASIC known as the 2C33. The ASIC acted as a disk controller for the floppy drive, and also included additional sound hardware featuring primitive wavetable synthesis and FM synthesis capabilities. The disk cards used were double-sided, with a total capacity of 896 kilobits or 112 kilobytes per disk. Many games spanned both sides of a disk, requiring the user to switch sides at some point during gameplay. A few games used two full disks (four sides). The Disk System was capable of running on six C-cell batteries or the supplied AC adapter. Batteries would usually last 5 months on daily game play. The battery option was included due to the likelihood of a standard set of AC plugs already being occupied by a Famicom and a television.
Metroid was released for the Famicom in 1986, as it was for the Nintendo Entertainment System. The NES and Famicom versions differ in many ways.
==Metroid version differences==
*The Famicom version used a save system (by writing to the disk) to record progress. The NES version would have required a battery, which was expensive at the time, so a password system was used instead.
*The NES version has Suitless Samus as a playable bonus, but the Famicom version does not. Instead, a money bag is shown to indicate a completed game. Suitless Samus is still present in the game's best endings, though.
*The Famicom version has higher quality music and sound due to the FDS having a wavetable sound channel. One major change is to the Escape! theme after the death of Mother Brain.
*The Famicom version also lags far less than the NES version.
**Largely because of this, the battle against Ridley was slightly easier in the NES version than in the Famicom version.
*The Famicom version at times requires the player to eject the disk and flip it over to continue playing (with the side being either Side A or Side B), such also being required to access the ending after escaping Tourian. This is omitted from the NES version for obvious reasons.
==Trivia==
*Samus is also known to own a Famicom Disk System in Victory Techniques for Metroid. First, she is seen playing Volleyball with Commander Nemo, and later is losing at The Legend of Zelda while she flies the Cosmo Liner to Zebes.
*At the top of Booster's Tower in Super Mario RPG: Legend of the Seven Stars, besides the Samus doll, the mascot for the system Diskun also made a cameo inside the toy box. Unlike with the Samus doll, however, it was not readily identifiable at the time due to the graphics and only became apparent with the Nintendo Switch remake.https://gamerant.com/super-mario-rpg-remake-cameos-mr-disk-diskun/
==Gallery==
File:Famicom.jpg|The Family Computer system by itself.
Family Computer Disk System Peripheral.jpg|The Disk System peripheral by itself.
File:Metroid (JPN) 3DS Virtual Console icon.jpg|Nintendo 3DS Virtual Console HOME Menu icon, depicting the Famicom with the Disk System peripheral and a TV set displaying the Metroid title screen.
==References==
ru:Family Computer Disk System
Category:NES
Category:Consoles