: You can find the FDS BIOS (disksys.rom) hosted on the Internet Archive for preservation purposes.
The is the BIOS image for the Famicom Disk System , a peripheral released by Nintendo in 1986 for the Japanese Famicom. Because this software is copyrighted property of Nintendo, it is not bundled with the FCEUX emulator and must be obtained separately. Where to Find the Disksys ROM fceux disksys rom download
To play Famicom Disk System (FDS) games on the emulator, you must have a specific BIOS file named disksys.rom . This file acts as the operating system for the virtual disk drive, allowing the emulator to boot .fds game files. What is the Disksys ROM? : You can find the FDS BIOS (disksys