The Family Computer Disk System (or Famicom Disk System) is the floppy drive add-on for the Japanese Famicom. Your games go in /recalbox/share/roms/fds, with the .fds extension, optionally inside .zip or .7z.
Four cores are available: Libretro Nestopia (default), Libretro FCEUmm, Libretro Mesen and Libretro FinalBurn Neo.
This system requires the Disk System BIOS. Without it, no game will start — check the BIOS manager built into Recalbox.
This is the manipulation to know on this system: Disk System games are written on both sides of the floppy, and you have to flip it mid-game when the title asks you to — usually with an on-screen message such as SIDE B.
The combination depends on the emulator.
Press R1, then L1, then R1 in sequence:
R1 ejects the disk;L1 flips it;R1 inserts it again.Press L3, then R3 in sequence:
L3 ejects the disk;R3 flips it and reads the new side.If nothing happens, first check which core is in use: press
STARTon the game, thenEDIT GAME>RUN WITH.
The reference set for this system is No-Intro, which is also the one recommended for netplay. Some sorting tools require a header file to verify these roms — see Sorting and updating your roms.