[BIOS] Family Computer Disk System (Rev 1) ROM Download can be obtained free for Nintendo Famicom Disk System on EmuGames.net only. Play emulator game in English for the USA region. [BIOS] Family Computer Disk System (Rev 1) is a Famicom ROM that you can download to your computer or play online within your browser. You can also download roms that work on all your devices in high quality such as Sega CD, Mega-CD and Sega TMSS.