8bit Upgrades and Expansions - by Function

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Atom and System computer upgrades

Eurocards

• Acorn 32K Dynamic RAM
• Acorn 1MHz 6502 CPU  (for System 1, 2, 3 or 4)
• Acorn 2MHz 6502A CPU  (for System 5)
• Acorn 40 Column VDU Interface  (for system 2, 3, 4 or 5)
• Acorn 6809 CPU
• Acorn 80 x 25 VDU Interface
• Acorn 8K Static RAM
• Acorn Bus Extender
•  Acorn Econet Node (for System 3, 4 or 5)
• Acorn fdc card
• Acorn System 1 keyboard  (for System 1 or 2 computers)
• Acorn System keyboard  (for System 2, 3, 4 or 5 computers - not a Eurocard!)
• Acorn Universal Interface Board
•  Audio Computers 64K RAM board
• Control Universal CUGraph 2
• Control Universal EuroBeeb
• Custom Serial card
• Micro Electronic Systems RAM/ROM Kaart
• Polebrook Computer Services Floppy Disc Controller

BBC, Electron, Master etc. upgrades

Communications

• Acorn ANE01 Teletext Adapter
• Acorn ANE02 Prestel Adapter
• Acorn ANK01 IEEE488 Interface
•  Beebug Master Modem
• Morley Teletext Adapter
• Torch modem board 

Data Recorders

• Acorn ALF03 Data Recorder
• Acorn ANF03 Data Recorder

Disc Controllers

• Acorn ALA13 Electron Plus3
• Computer Village floppy disc controller
•  Cumana Floppy Disk System for the Electron
• Cumana QFS Double Density Disk Filing System
• J.G.Hartson BBC IDE Interface
• Opus D-DOS
• Opus D/Doss AI disc controller
• Opus Disc Controller
• PRES Advanced Plus 3  (Electron)
• Solidisk Dual Floppy Disc Controller
• Solidisk EFS   (Electron)

Disc Drives

• Opus Challenger 3
• Torch Z80 Disc Pack

Graphics and Video

• Watford Electronics Beeb Video Digitiser 

Mice, trackerballs, joysticks etc

• Acorn 2 Button Mouse
•  Acorn BitStik
• Acorn Joysticks
• Acorn trackerball
• AMX Mouse
• First Byte Switched Joystick Interface   (for Electron)
• Nidd Valley Digimouse
• RH Electronics Light Pen
• Voltmace Delta 14 joystick 

Miscellaneous

• Acorn Electron Plus 1
• Mertec Compact Companion  (for Master Compact)
• Slogger Click
• Slogger Electron Expansion 2.0
• Slogger RomBox Plus
• Technomatic "Time-Warp" Real-Time Clock Calender 
• The Concept Keyboard Company A4-128 Keyboard
• Voltmace A/D User Port Interface 

Music, MIDI, and sound

• Acorn ANV02 Music 500
• EMR BBC MIDI Interface
• Hybrid Music 2000 MIDI Interface
• Hybrid Music 4000 Keyboard
• Hybrid Music 5000 Synthesiser

Network

• Acorn ADF10 Econet Module
• Acorn AEH14 Type1 clock
• Acorn AEH15 Type1 terminator
• Acorn AEH20 Econet Bridge
• Acorn AEH51 Econet Starter Pack
• Acorn ANB22 BBC Econet Upgrade
• Acorn Econet Test Box
• Acorn Filestore E01S
• Acorn Filestore E40S
• Acorn Econet socket box
• Acorn Type 2 Econet Clock
• SJ Research Econet Clock box
• SJ Research MDFS
• SJ Research Secure Terminator box
• SJ Research Socket box
• SJ Research Split Socket box
• SJ Research Terminator
• SJ Research Transient Suppressor
• White Wind Logic Interclock module

ROM/RAM Upgrades

• Acorn Atom Card ROM PCB
• Acorn ADF14 Master ROM Cartridge
• ACP Advanced Rom Mk1 Adaptor 
• Aries B12 Sideways ROM Expansion
•  ATPL Sidewise+
• Care Electronics 2 ROM Cartridge
• Care Electronics 4 ROM Cartridge
• Computer Village Memory Expansion Board CVX-16
• GCC Romex 13
• John Kortink GoMMC
• Peartree Master cartridge (uncased)
• Peartree Master RAM/ROM board
• Peartree ROM expansion
• RAMAMP Computers Sideways RAM/ROM board
• Solidisk Technology 128K Sideways Extension RAM
• Solidisk Technology Fourmeg RAM/ROM Expansion
• Solidisk Technology Master Mega card
•  Viglen Sideways ROM Cartridge System
• Viglen Master Cartridge Adaptor
• Watford Electronics 12 ROM Board
• Watford Electronics 13 ROM Board
• Watford Electronics 32K Shadow RAM upgrade
• Watford Electronics Apex Control Card
• Watford Electronics Master cartridge
• Watford Electronics RAM/ROM board
• Watford Electronics Sideways ZIF socket 

SCSI boards

• Torch SCSI board

Second/Co-processors

• Acorn Large 32016 2nd processor
• Acorn A500 second processor
• Acorn ADC06 6502 co-processor
• Acorn ADC08 Intel 80186 co-processor
• Acorn ANC01 6502 2nd processor
• Acorn ANC04 Z80 2nd processor
• Acorn ANC05 32016 2nd processor
• Acorn ANC06 Cambridge Co-Processor
• PMS B2P-6502 2nd processor
• Sprow ARM7 co-processor
• Technomatic Multiform Z80 second processor
• Torch 68000 board
• Torch Z80 Communicator
• Watford Electronics Co Pro Adaptor

Speech Synthesis

• Cheetah Sweet Talker