|Release date||France: 1 December 1982|
|Units sold||More than 40000 produced|
|Media||Cassette tape, MEMO7 cartridges|
|Operating system||BASIC (in cartridge)|
|CPU||Motorola 6809 @ 1 MHz|
|Memory||22 KB RAM, 4KB ROM, 16KB cartridges|
|Display||320 x 200, 8 colours (2 colour constraint for each 8x1 pixels)|
|Graphics||Motorola MCA1300 gate array on TO7/70|
|Successor||Thomson TO8, Thomson TO9|
The TO7 is built around a 1 MHz Motorola 6809 processor. ROM cartridges, designed as MEMO7, can be introduced through a memory bay. The user interface uses Microsoft BASIC, included in the kit cartridge. The keyboard features a plastic membrane, and further user input is obtained through a lightpen. Cooling is provided by a rear radiator. A standard television can be used as a monitor using a RGB SCART (Peritel) connector, with a resolution of 320x200 (with 2 colors for each 8x1 pixels).
The TO7 prototype, called Thomson T9000, was developed in 1980. The differences regarding the production model are a different startup menu and buggier BIOS.
As common on home computers designed to be connected to an ordinary TV screen, the 320 x 200 pixels active area doesn't cover the entire screen, and is surrounded by a border. Graphics were limited to 8 colours (by combination of the RGB primaries) with proximity constraints (2 colors for each 8x1 pixel area). The video output is RGB on a SCART connector, with the refresh rate being 625-line compatible 50Hz.
Audio featured a single channel sound generator with 5 octaves. A "game expansion" was capable of four channel, 6 octaves sound.
The keyboard has 58 keys and includes arrow keys.
Besides cartridges, the machine used cassette tapes for file storage.
An upgraded version, the Thomson TO7/70, was released in 1984. Among improvements RAM was increased to 64 KB from 22KB - "70" on the version name stands for 64+6 (64KB RAM + 6KB ROM). The 6809 processor was replaced by a Motorola 6809E and the color palette was extended from 8 to 16 colors.
Graphics were similar to the Thomson MO5 and generated by a Motorola MCA1300 gate array. capable of 40×25 text display and a resolution of 320 x 200 pixels with 16 colours (limited by 8x1 pixel colour attribute areas).. The colour palette is 4-bit RGBI, with 8 basic RGB colours and a intensity bit (called P for "Pastel") that controlled saturation ("saturated" or "pastel").
Software developed for the TO-7 can be run on the TO-7/70, but the reverse is not possible.
|Wikimedia Commons has media related to Thomson TO7.|
- "TO7-70 Circuit Diagram". dcmoto.free.fr.
- "OLD-COMPUTERS.COM - TO7". www.old-computers.com.
- "Thomson TO7 Emulation in MESS". www-apr.lip6.fr/~mine/.
- "Thomson TO7". www.obsolete-tears.com.
- "Thomson T9000 Emulation in MESS". www-apr.lip6.fr/~mine/.
- "Manuel Technique du TO7 et TO7-70" (PDF). progettosnaps.net.
- Oury, Michel (1985). "Manuel Technique du MO5" (PDF).
- "OLD-COMPUTERS.COM : TO7/70". old-computers.com.
- "Le Guide du TO7/70" (PDF).
- "Thomson TO7/70 Emulation in MESS". www-apr.lip6.fr/~mine/.
- "Microton 5, March/April 1986" (PDF). boitasite.com.
- "OLD-COMPUTERS.COM : MO5". www.old-computers.com.
- "documentations:hardware:mo5 [DON'T PANIC]". pulkomandy.tk.
- "documentations:devices:gate.arrays [DON'T PANIC]". pulkomandy.tk.