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Title PDF Image Credit
6502 2nd Processor - Issue 4 2/84 ECO 360
Ref. A1/108,000/C
  171k  
80186 Co-Processor
Issue 1 23/4/86
Ref. 0143,200/C
410k 934k
1MB
Chris Richardson
Acorn 1770 circuit diagram   276k Andrew Benham
Acorn 1770 Logic schematic 16k 243k Mark Haysman
Acorn Electron   527k Chris Richardson
Acorn Host Adapter   256k  
Acorn Prestel Adapter   812k  
Archimedes 300   2.8MB  
Archimedes 400   2MB  
Archimedes 440   1.4MB  
Atom - BBC BASIC Conversion Card
Issue 1, 06/82
Ref. 102,007C
25k 186k PDF - Keith Howell
Atom - Circuit Diagram for 50Hz TV Converter Issue 1 28/01/81
Ref. 102,003/C
  48k  
Atom - Econet Node Circuit Diagram for Acorn Atom Issue 1 27/1/81
Ref. 202,002
  301k  
Atom - FDC Circuit   22.5k  
Atom - FDC PSU   6k  
Atom - Issue 1 13/05/80
Ref. 202,000/C
  219k Chris Richardson
Atom - Issue 3 14/01/81 Prelim Issue
Ref. 202,000/C
  1.3MB Richard Sprowson
Atom - Issue 3 14/01/81
Ref. 202,000/C
116k 306k
1.26MB
PDF - Keith Howell
Atom - Pal Encoder Issue 1 31/12/80
Ref. 202,001/C
  153k  
BBC B - Issue 9 7/83 ECO 121 (split)
Ref. 103,000/C
  1.4MB Acorn
BBC B - Issue 9 7/83 ECO 121
Ref. 103,000/C
  1.4MB  
BBC B - unknown issue   1.62MB Chris Richardson
BBC B PSU   130k Chris Richardson
BBC B+   1.4MB  
BBC B+ - better scan   2.81MB Chris Richardson
BBC Econet   51k  
BBC Micro 16-Bit IDE Interface   102k J. G. Harston
BBC Micro 8-Bit IDE Interface   88k J. G. Harston
BBC-B Econet Interface   681k  
Beeb IDE Interface 41k   Richard Sprowson
Disc Drive 40/80 Track stepping   106k  
Econet Clock and Terminator box   185k  
Econet Module
Issue 2 3/9/86
Ref. 0143,020/C
  337k Acorn
Master 128 3MB   scan - Tim Harrison
Master 128
including Cartridge slot, Econet, Keyboard
  588k Chris Richardson
Master Compact - Issue 2
Ref. 0158,000/C
  524k Chris Richardson
Music 2000 Midi Interface 30k    
SCSI Exerciser PCB Circuit Diagram
Issue 1 9/86
Ref No. 0166,100
  55k  
SCSI Host Adaptor Master Series Internal Interface (BBC AIV)
Issue 2 29/10/86
Ref. 0161,000/C
  189k  
System 1- Issue 1
ref 200,000/C 23/02/79
  208k  
System 1 Keyboard, Display, Cassette - Issue 1
ref 200,001/C 26/02/79
  87k  
System 2 - 6809 Processor Card Issue 2
ref 200,018/C 7/2/80
25k 164k PDF - Keith Howell
System 2 - Econet Eurocard Issue 2
ref 200,024 27/1/81
  491k  
System 2 - Floppy Disc Controller Issue 1, Eurocard
ref 200,004/C 7/2/80
  63k  
System 2 - Memory Board 8k RAM & 8k PROM Issue 1, Eurocard
ref 200,003/C 29/08/79
25k 125k PDF - Keith Howell
System 2 - VDU Interface PCB (Teletext) Issue 1, Eurocard
ref 200,002/C 29/08/79
40k 136k PDF - Keith Howell
System 2 - Versatile Interface Board Issue 2
ref 200,009/C 3/3/80
  155k  
Z80 CoPro - Issue 3 4/84 ECO 403
Ref. A1/0109,000/C
  205k  
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