Dimensions:

Material:

Power supply

Keyboard:

Cassette modem:

 

 

 

 

Printer interface:

Disc Controller:

Video output:

410mm wide, 345 mm deep, 65mm high, weight: 370 gr.

Injection moulded thermoplastic.

Built-in Switching PSU

Standard QWERTY format (73 keys + 10 function keys).

Incorporated to allow storage of programs and data

on a standardaudio cassette recorder. (300, 1200 Baud)

When the cassette interface is not in use, the serial

port will be available to provide a bi-directional

RS423 CENTRONICS parallel. (B only)

CENTRONICS parallel.

A floppy disk controller is not present. (B only)

Composite Video.

1v pk-pk composite video output is provided on a 75 ohm BNC socket. The signal is capable to display in colour on a typical PAL (baseband input) monitor. UHF OUTPUT output is from an Aztec modulator fixed tuned to approximately channel 36

The 8 selectable display formats as follows

(RAM requirements in bytes are shown in brackets):

0. 80*25 2-colour text (foreground/background). (B)

1. 640*256 2-colour graphics & 80*32 text. (B)

2. 320*256 4-colour graphics & 40*32 text. (B)

3. 160*256 16-colour graphics and 20*32 text. (B)

4. 40*25 2-colour text. (A & B)

5. 320*256 2-colour graphics & 40*32 text. (A & B)

6. 160*256 4-colour graphics & 20*32 text. (A & B)

7. 40*25 teletext-format display. (A & B)

 

 

(16K)

(20K)

(20K)

(20K)

(8K)

(10K)

(10K)

(1K)

Motherboard:

dubble sided pcb

CPU, Clock

RAM

ROM

Disc Controller

Disc Filing System

OS, Language

Add-in / Upgrades

4, 16K romsockets

200.300 Issue 3

 

MOS 6502, 2 MHz

A 16 K, B 32 K

32 K

n/a in model A

n/a in model A

1.2, BBC Basic

n/a in model A

Paged Roms