RigPix logo

Vintage computers logo


Back to main

Back to Vintage computers

Next computer





Last modified 2013-01-22

BBC Micro B

SPECIFICATIONS
Type:8-bit home and educational computer
CPU:MOS 6502A @ 2 MHz
Operating system:Acorn MOS
Memory:ROM: 32 KB
RAM: 32 KB
Sound:4 channels (1 noise, 3 melodic) with a SN76489 chip
Optional speech synthesis with the TMS5220 and TMS6100 chips
Graphics:Motorola 6845 CRT controller and Mullard SAA5050 teletext chip
Text:
Mode 3: 80*25 characters, 2 colors
Mode 6: 40*25 characters, 2 colors
Mode 7: 40*25 characters (Teletext), 8 colors
Graphics
Mode 0: 640*256 pixels, 2 colors
Mode 1: 320*256 pixels, 4 colors
Mode 2: 160*256 pixels, 8 colors
Mode 4: 320*256 pixels, 2 colors
Mode 5: 160*256 pixels, 4 colors
Storage:Tape recorder (300/1200 bd)
Optional floppy and hard drives
Input:Integrated keyboard
Connectivity:RGB out
Composite out
TV out (PAL)
Tape recorder I/O
RS-423 port
Centronics parallel port
20-pin user port
Analog I/O port
1 MHz expansion port
External second CPU connector (The "Tube")
Optional Econet network I/F (100 KBit/s)
Voltage:
Power consumption:
Dimensions (W*H*D):? mm (?")
Weight:? Kg (? lbs)
Manufactured:1981-198x (Discontinued)
Other:Introduction price 1981 in the UK: £335.00
Related documents:
Modifications:
Notable "ham" software: