Twin Famicom fact
■ There are two revisions of the Twin Famicom, each available in black or red. The later version, as shown here, is easily distinguished by the addition of turbo-fire switches on the controllers.
PROCESSOR: 8-BIT 6502-BASED RICOH 2A03 (1.79 MHZ)
RAM: 2KB MAIN MEMORY PLUS 2KB VIDEO MEMORY (CARTRIDGE MODE), PLUS 8KB SPRITE/TILE MEMORY AND 32KB DISK CACHE (DISK MODE)
GRAPHICS: RICOH 2C02 PICTURE PROCESSING UNIT (256X240 RESOLUTION, 25 ON-SCREEN COLOURS FROM 54 COLOUR PALETTE, 8 SPRITES PER SCANLINE)
AUDIO: TWO PULSE WAVE CHANNELS, TRIANGLE WAVE CHANNEL, NOISE CHANNEL, DPCM SAMPLE CHANNEL, WAVETABLE SYNTHESIS CHANNEL (DISK GAMES ONLY)
STORAGE: ROM CARTRIDGE (UP TO 1MB), FAMICOM DISK CARD (DOUBLE-SIDED, 112KB TOTAL)
OPERATING SYSTEM: 8KB FAMICOM DISK SYSTEM BIOS ROM (DISK MODE ONLY)