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8-Bit Software

The BBC and Master Computer Public Domain Library

Circuit Diagrams

6502 2nd Processor
Issue 4 2/84 ECO 360
Ref. A1/108,000/C
TIF

80186 Co-Processor
Issue 1 23/4/86
Ref. 0143,200/C
PDF GIF TIFs
Chris Richardson


Acorn 1770
TIF
Andrew Benham


Acorn 1770 Logic schematic
PDF GIF
Mark Haysman


Acorn Electron
TIFs
Chris Richardson


Acorn Host Adapter
GIF



Acorn Prestel Adapter
TIF



Archimedes 300

Archimedes 400

Archimedes 440

Atom - BBC BASIC Conversion Card
Issue 1, 06/82
Ref. 102,007C
PDF PNG
Keith Howell


Atom - 50Hz TV Converter
Issue 1 28/01/81
Ref. 102,003/C
GIF



Atom - Econet Node
Issue 1 27/1/81
Ref. 202,002
PNG



Atom - FDC Circuit
GIF



Atom - FDC PSU
GIF



Atom - Issue 1 13/05/80
Ref. 202,000/C
TIF
Chris Richardson


Atom - Issue 3 14/01/81 Prelim Issue
Ref. 202,000/C
GIF
Richard Sprowson


Atom - Issue 3 14/01/81
Ref. 202,000/C
PDF PNG PNG
Keith Howell


Atom - Pal Encoder
Issue 1 31/12/80
Ref. 202,001/C
PNG



BBC B - Issue 9 7/83
ECO 121 (split)
Ref. 103,000/C
GIFs
Acorn


BBC B - Issue 9 7/83
ECO 121
Ref. 103,000/C
GIF



BBC B - unknown issue
TIFs
Chris Richardson


BBC B PSU
TIFs
Chris Richardson


BBC B+
GIF



BBC B+ - better scan
TIFs
Chris Richardson


BBC Econet
PNG



BBC Micro
16-Bit IDE Interface
GIF
J. G. Harston


BBC Micro
8-Bit IDE Interface
GIF
J. G. Harston


BBC-B
Econet Interface
TIF



Beeb IDE Interface
PDF
Richard Sprowson


Disc Drive 40/80
Track stepping
GIF



Econet Clock and Terminator box
TIF



Econet Module
Issue 2 3/9/86
Ref. 0143,020/C
GIFs
Acorn


Master 128
PDF
Tim Harrison


Master 128
Including Cartridge slot,
Econet,
Keyboard
TIFs
Chris Richardson


Master Compact - Issue 2
Ref. 0158,000/C
TIF
Chris Richardson


Music 2000 Midi Interface
PDF



SCSI Exerciser PCB
Circuit Diagram
Issue 1 9/86
Ref No. 0166,100
PNG



SCSI Host Adaptor Master Series Internal Interface (BBC AIV)
Issue 2 29/10/86
Ref. 0161,000/C
PNG



System 1- Issue 1
ref 200,000/C 23/02/79
TIF



System 1 Keyboard,
Display, Cassette - Issue 1
ref 200,001/C 26/02/79
TIF



System 2 - 6809 Processor Card
Issue 2
ref 200,018/C 7/2/80
PDF TIF
Keith Howell


System 2 - Econet Eurocard
Issue 2
ref 200,024 27/1/81
TIF



System 2 - Floppy Disc Controller
Issue 1, Eurocard
ref 200,004/C 7/2/80
TIF



System 2 - Memory Board 8k RAM &
8k PROM Issue 1, Eurocard
ref 200,003/C 29/08/79
PDF TIF
Keith Howell


System 2 - VDU Interface PCB
(Teletext) Issue 1, Eurocard
ref 200,002/C 29/08/79
PDF TIF
Keith Howell


System 2 - Versatile Interface Board
Issue 2
ref 200,009/C 3/3/80
TIF



Z80 CoPro - Issue 3 4/84 ECO 403
Ref. A1/0109,000/C
TIF



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