yann64andClaude Opus 5.5
b274874139
1,289 discussions, 9,527 archived comments; pages no longer carry the comments themselves. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ
130 lines
4.4 KiB
Markdown
130 lines
4.4 KiB
Markdown
---
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title: Sega Teradrive
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categories:
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- Computers
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types:
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- Home Computer
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origins:
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- Japan
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years:
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- '1991'
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cpus:
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- Intel 80286
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params:
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name: Teradrive
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image: /media/museum/photos/sega_teradrive_1.jpg
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company: /companies/sega
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company_name: Sega
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specs:
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- label: NAME
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value: Teradrive
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- label: MANUFACTURER
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value: Sega
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- label: TYPE
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value: Home Computer
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- label: ORIGIN
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value: Japan
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- label: YEAR
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value: May 1991
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- label: KEYBOARD
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value: Full-stroke professional keyboard. 106 keys with function keys, cursor keys and numeric keypad
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- label: CPU
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value: Intel 80286 + Motorola MC68000 + Zilog Z80A (used for sound system)
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- label: SPEED
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value: 10 MHz (80286) / 10 MHz (68000) / 3.58 MHz (Z80A)
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- label: CO-PROCESSOR
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value: Megadrive customchips (?)
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- label: RAM
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value: 2.5 MB (512 KB onboard + two 1 MB SIMM RAMs)
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- label: VRAM
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value: 256 KB
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- label: ROM
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value: 128 KB
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- label: TEXT MODES
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value: 40 or 80 chars x 25 lines
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- label: GRAPHIC MODES
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value: 320 x 244 (Megadrive VDP Mode) / 320 x 200 (MCGA) / 640 x 480 (VGA)
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- label: COLORS
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value: 64 among 512 (Megadrive Mode) / 256 among 262144 (S/VGA Modes)
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- label: SOUND
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value: FM Sound / PCM Sound (Megadrive) - Beeper (PC)
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- label: SIZE / WEIGHT
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value: 36 (W) x 33.4 (D) x 8 (H) cm / 5.6 to 6.2 Kg according to versions
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- label: I/O PORTS
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value: RGB analog vide output, composite video output, 1 ISA slot, mouse, keyboard, serial (2) & parallel (1) ports, headphone output, 2 joystick ports
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- label: BUILT IN MEDIA
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value: 3.5'' disk-drive, 30 MB hard drive
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- label: OS
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value: DOS/V
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- label: POWER SUPPLY
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value: Built-in PSU
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- label: PRICE
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value: 148,000¥ (Mod.1), 188,000 ¥ (Mod.2), 248,000 (Mod.3) (Japan, 1991)
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tabs:
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- photos
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- adverts
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- connectors
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- software
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- links
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- videos
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forum_thread: 512
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photos:
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- title: MAIN UNIT
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subtitle: ''
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text: ''
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image: /media/museum/photos/sega_teradrive_main-unit.jpg
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adverts:
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- title: JAPANESE ADVERT (1991)
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subtitle: ''
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text: This japanese advert indicates that there were at least 3 different models sold...
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image: /media/museum/pubs/sega_teradrive_jap-pub_1.jpg
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connectors:
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- title: SEGA TERADRIVE
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subtitle: RGB monitor pinout
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text: |-
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1 - Red\
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2 - Green\
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3 - Blue\
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4 - Horizontal/Composite Sync\
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5 - Vertical Sync\
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6 - Red Shield\
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7 - Green Shield\
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8 - Blue Shield\
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9 - Ground
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image: /media/museum/connectors/sega_teradrive_videou-output.jpg
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screenshots:
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- title: BOOT SCREEN
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subtitle: ''
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text: Start-up menu with several options, including file manager, DOS, clock and MegaDrive mode.
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image: /media/museum/software/sega_teradrive_boot.jpg
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links:
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- title: Assembler - Teradrive page
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url: http://assembler.roarvgm.com/teradrive/teradrive.html
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text: Some pictures & info here
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- title: Mic's homepage
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url: http://www1.odn.ne.jp/~caa09810/old_pc/pc_tera.htm
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text: Nice small japanese description
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- title: nfg.2y.net - Teradrive page
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url: http://nfg.2y.net/games/teradrive/
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text: Another interesting page in English
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- title: Qwerters Clinic
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url: http://www.ai.wakwak.com/~ex4/kb/main_sega_teradrive.htm
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text: Nice japanese page dedicated on the Teradrive's keyboard (!)
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videos:
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- title: Sega Teradrive - Japanese advert
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url: http://video.google.com/googleplayer.swf?docId=-4391346534753818861&hl=fr
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text: 'Length: 14 s'
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oc_id: 518
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source:
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url: https://web.archive.org/web/20230326085701/http://www.old-computers.com/museum/computer.asp?c=518
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date: '2023-03-26'
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---
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What a strange computer ! It was built by IBM (like the [Atari Jaguar](/museum/atari-jaguar/) few years later) in Japan for Sega, and was sold only there.
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It is an [IBM PC AT](/museum/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.
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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.
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Amstrad made later a similar computer called **MegaPC**.
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