The machine the BBC's Computer Literacy Project was built around, and so the one a generation of British children learned on. Acorn's engineering is the draw: a 6502 clocked properly, four-channel sound, seven display modes and an expansion bus that made it the standard laboratory and school controller for a decade. Collectors watch for the Ferranti ULAs, which fail and take the display with them, and for the 8271 floppy controller of an early board.

Details

Manufacturer	Acorn
Model	BBC Micro Model B
Year	1981
Chassis	beige case, black keys
CPU	Rockwell 6502A-2
Installed RAM	16× 4116 (32 KiB)
OS	Acorn 1.20
Condition	Faulty
Notes	Note says "continuous tone, psu partially re-capped, everything socketed"

Machine

Catalogue model	BBC Micro Model B — Acorn, 1981
Board	Issue 7
Style	Model B
Region	PAL (UK)

Chips fitted — what is marked on each

CPU ✓

Rockwell R6502A

Video ULA ✓

VC2069

Serial ULA ✓

Ferranti 2C199E

CRTC ✓

Hitachi HD6845

Floppy controller ✓

Intel 8271

OS ROM ✓

OS 1.20

BASIC ROM ✓

BASIC I

Files

No files for this one yet.

History

2026-08-19	note test
2026-08-18	notes: (empty) → Note says "continuous tone, psu partially re-capped, everything socketed"
2026-08-16	installed_ram: 16× 4416 (128 KB) → 16× 4116 (32 KB)
2026-08-16	cropped a photo
2026-08-16	rotated 2 photos
2026-08-16	cropped a photo
2026-08-16	rotated a photo
2026-08-16	added 3 photo(s)
2026-08-16	created