website/content/museum/sega-teradrive.md

title, categories, types, origins, years, cpus, params

title	categories	types	origins	years	cpus	params
Sega Teradrive	Computers	Home Computer	Japan	1991	Intel 80286	name image company company_name specs tabs forum_thread photos adverts connectors screenshots links videos oc_id source Teradrive /media/museum/photos/sega_teradrive_1.jpg /companies/sega Sega label value NAME Teradrive label value MANUFACTURER Sega label value TYPE Home Computer label value ORIGIN Japan label value YEAR May 1991 label value KEYBOARD Full-stroke professional keyboard. 106 keys with function keys, cursor keys and numeric keypad label value CPU Intel 80286 + Motorola MC68000 + Zilog Z80A (used for sound system) label value SPEED 10 MHz (80286) / 10 MHz (68000) / 3.58 MHz (Z80A) label value CO-PROCESSOR Megadrive customchips (?) label value RAM 2.5 MB (512 KB onboard + two 1 MB SIMM RAMs) label value VRAM 256 KB label value ROM 128 KB label value TEXT MODES 40 or 80 chars x 25 lines label value GRAPHIC MODES 320 x 244 (Megadrive VDP Mode) / 320 x 200 (MCGA) / 640 x 480 (VGA) label value COLORS 64 among 512 (Megadrive Mode) / 256 among 262144 (S/VGA Modes) label value SOUND FM Sound / PCM Sound (Megadrive) - Beeper (PC) label value SIZE / WEIGHT 36 (W) x 33.4 (D) x 8 (H) cm / 5.6 to 6.2 Kg according to versions label value I/O PORTS RGB analog vide output, composite video output, 1 ISA slot, mouse, keyboard, serial (2) & parallel (1) ports, headphone output, 2 joystick ports label value BUILT IN MEDIA 3.5'' disk-drive, 30 MB hard drive label value OS DOS/V label value POWER SUPPLY Built-in PSU label value PRICE 148,000¥ (Mod.1), 188,000 ¥ (Mod.2), 248,000 (Mod.3) (Japan, 1991) photos adverts connectors software links videos 512 title subtitle text image MAIN UNIT /media/museum/photos/sega_teradrive_main-unit.jpg title subtitle text image JAPANESE ADVERT (1991) This japanese advert indicates that there were at least 3 different models sold... /media/museum/pubs/sega_teradrive_jap-pub_1.jpg title subtitle text image SEGA TERADRIVE RGB monitor pinout 1 - Red\ 2 - Green\ 3 - Blue\ 4 - Horizontal/Composite Sync\ 5 - Vertical Sync\ 6 - Red Shield\ 7 - Green Shield\ 8 - Blue Shield\ 9 - Ground /media/museum/connectors/sega_teradrive_videou-output.jpg title subtitle text image BOOT SCREEN Start-up menu with several options, including file manager, DOS, clock and MegaDrive mode. /media/museum/software/sega_teradrive_boot.jpg title url text Assembler - Teradrive page http://assembler.roarvgm.com/teradrive/teradrive.html Some pictures & info here title url text Mic's homepage http://www1.odn.ne.jp/~caa09810/old_pc/pc_tera.htm Nice small japanese description title url text nfg.2y.net - Teradrive page http://nfg.2y.net/games/teradrive/ Another interesting page in English title url text Qwerters Clinic http://www.ai.wakwak.com/~ex4/kb/main_sega_teradrive.htm Nice japanese page dedicated on the Teradrive's keyboard (!) title url text Sega Teradrive - Japanese advert http://video.google.com/googleplayer.swf?docId=-4391346534753818861&hl=fr Length: 14 s 518 url date https://web.archive.org/web/20230326085701/http://www.old-computers.com/museum/computer.asp?c=518 2023-03-26

What a strange computer ! It was built by IBM (like the Atari Jaguar few years later) in Japan for Sega, and was sold only there.

It is an IBM PC AT compatible system mixed with a Sega Megadrive (Genesis) console. On the front panel, one can find a Megadrive cartridge slot, two joystick connectors, a reset button, a MD/PC switch, a volume slider, a headphone output, a power button, keyboard/mouse connectors (PS/2) and one 3.5'' disk drive.

Three models were released, a low-end Model 1, with 640k RAM and no HD, a Model 2 with two floppies and no HD and 1MB RAM, and the high-end Model 3, with one floppy, 2.5MB RAM and a 30MB drive. All three shipped with the same software and accessories.

Amstrad made later a similar computer called MegaPC.