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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 1986, the TO8 replaces and upgrades the TO7/70. It integrates most of the improvements from the TO9, but now uses a single gate array with page mode access to the RAM, allowing a reduced chip count and simpler design.

Manuals

ROMs

Boot screen

Specifications

Frequencies

6809E CPU at 1MHz
1 “page mode” gate array chip at 16MHz

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 composyte sync output.

Audio

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

Memories

256KiB RAM split into 16 pages of 16K each
- 16KiB screen RAM (CPU has a fixed mapping to page 0, but the video logic can use pages 0 to 3)
- 16KiB “user” RAM (fixed mapping to page 1)
- All pages can be mapped to the “RAM page” area or the “cartridge space” area.
RAM expansion port on the back of the machine to add 16 more pages of RAM.
80KiB ROM
- 16KiB system and disk ROM
- 32KiB for BASIC 128 and EXTRAMON
- 32KiB for BASIC 1.0, boot screen, and icon DOS

Mass storage

Floppy drive connector (controller built-in)
Cartridge port
Tape connector

Keyboard

Reset button

Dimensions&weight

Power supply

220V, AC.

Connectors

Keyboard

SCART video

Floppy

expansion port

RAMDisk port

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