BBC Model B


Acorn BBC Model B
CPU 6502A / 2 MHz
RAM 32Kb (max 64 Kb)
ROM 32Kb
Text modes: 25*80, 25*40
Graphic modes: 160 * 256 (16 colous), 320 * 256 (4 colours), 640 x 256 (1 colour)
Sound: 3 channels + noise, mono
Connectors: 8 bit parallel port, 8 bit I/O port RS423 (NOT 232) Tv,video,RGB Tape Connector for second processor (!) 4 * 12 bit A/D in 5V and 12V out Econet, Acorns 115 kbs network. Discdrive (needs ROM extpansion) Joystick
Operating system: BASIC in ROM
Size: 409 mm * 358 mm * 78 mm / 3,7 kg
Target audience: Schools/education
Misc: A well built machine. With a second processor more than 64Kb of memory could be used. The second processor could be an 6502 or Z80. ELITE was originally written for BBC B. 32Kb RAM was too little for this machine.

Pictures:

BBC Model B BBC Model B
BBC Model B BBC Model B
BBC Model B BBC Model B
BBC Model B BBC Model B
BBC Model B BBC Model B