| The Cefucom-21 (branded “CCI Multipurpose SLAP Computer”) was released around 1983 in Japan as an English-language teaching computer. It was based on the Sanyo PHC‑25 hardware and is fully Z80‑based, employing two Z80 CPUs. The system included approximately 48 KB of RAM, 4 KB of VRAM, and around 58 KB of ROM containing Cefucom BASIC 1.0. It offered a text display mode of 32×16 characters and a graphic mode of 256×192 pixels. It used a built-in cassette drive for storage, supported RF and composite video output, had two Atari-style joystick ports, a Centronics parallel port, and a keyboard identical to that of the Sanyo PHC‑25. Instead of a conventional screen, the Cefucom-21 featured a unique side-mounted “paper graphics” viewer driven by the system to display printed lesson graphics. It was clearly designed for language instruction and included menus for lessons, tape playback, BASIC programming, and scheduler functions. Although obscure outside Japan, manual scans and ROM dumps have been preserved, and enthusiasts have documented its use and restored partial functionality. |
|||||
 |  |  |  |  |  |
 |  |  |  |  | |