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Table of Contents

Manuals
ROMs
Boot screen
Specifications
- - Frequencies
  - Video
  - Audio
  - Memories
  - Mass storage
  - Keyboard
  - Dimensions&weight
  - Power supply
Connectors

Introduced in 1985, the TO9 builds on existing Thomson technology to make a more “high end” computers. While the core is the same (1MHz 6809E CPU), many of the TO7/70 expansions are now built inside the machine, and more improvements are made, such as the new video modes.

Manuals

ROMs

Boot screen

Specifications

Frequencies

6809E CPU at 1MHz
3 gate array chips at 16MHz (address decoding, system management and lightpen, video generation)

Video

50Hz or 60Hz frame rate
4096 colors
16KiB video RAM
Video modes:
- 320×200, 16 colors with constraints,
- 320×200, 4 colors
- 160×200, 16 colors
- 640×200, 2 colors
RGB with composite sync output.

Audio

1-bit beeper
6-bit DAC
Audio track from tape connector
Output to audio pins of SCART port (mono)

Memories

128KiB RAM
- 16KiB screen RAM
- 16KiB “user” RAM (fixed)
- 96KiB in 6 16KiB banks
136KiB ROM
- 8KiB system and disk ROM
- 32KiB for BASIC 128 and EXTRAMON
- 32KiB for BASIC 1.0, boot screen, and icon DOS
- 32KiB for Paragraphe (word processor)
- 32KiB for “fiches et dossiers” (database)

Mass storage

Built-in 3.3“ floppy drive
Cartridge port
Tape connector
Connector for extra floppy drive (3.5” or 5.25“)

Keyboard

Reset button
Detachable keyboard with serial connection to computer

Dimensions&weight

Power supply

220V, AC.

Connectors

Keyboard

SCART video

Floppy

3 expansion ports

RAMDisk port

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