yann64andClaude Opus 5.5
b274874139
1,289 discussions, 9,527 archived comments; pages no longer carry the comments themselves. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ
180 lines
7.0 KiB
Markdown
180 lines
7.0 KiB
Markdown
---
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title: Acorn Computer Archimedes A3020
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categories:
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- Computers
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types:
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- Professional Computer
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origins:
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- United Kingdom
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years:
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- '1992'
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cpus:
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- ARM 250 32 bit RISC
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params:
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name: Archimedes A3020
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image: /media/museum/photos/acorna3020_system_2.jpg
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company: /companies/acorn-computer
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company_name: Acorn Computer
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specs:
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- label: NAME
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value: Archimedes A3020
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- label: MANUFACTURER
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value: Acorn Computer
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- label: TYPE
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value: Professional Computer
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- label: ORIGIN
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value: United Kingdom
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- label: YEAR
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value: '1992'
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- label: BUILT IN LANGUAGE
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value: BBC BASIC / RISC OS 3.1
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- label: KEYBOARD
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value: Full-stroke PC-102 style
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- label: CPU
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value: ARM 250 32 bit RISC
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- label: SPEED
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value: 12 MHz
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- label: CO-PROCESSOR
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value: MEMC (memory), VIDC (Video and Sound), IOC (I/O)
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- label: RAM
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value: 2 MB (up to 4Mb possible with socketed zip ram chips)
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- label: ROM
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value: 1 MB
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- label: SOUND
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value: 8 voices
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- label: I/O PORTS
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value: Centronics, RS423, VGA, Network, 1 expansion slot (same as A4000, A3000 and A3020)
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- label: BUILT IN MEDIA
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value: One 3.5
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- label: OS
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value: RISC OS 3.11
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- label: POWER SUPPLY
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value: Built-in power supply unit
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- label: PRICE
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value: £749 with floppy, £899 with a 60Mb hard disk.
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tabs:
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- photos
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- hardware
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- emulators
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- links
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- docs
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forum_thread: 689
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photos:
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- title: SYSTEM
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subtitle: ''
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text: ''
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image: /media/museum/photos/acorna3020_system_3.jpg
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- title: UNCOVERED
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subtitle: ''
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text: Notice the (blue) Econet network card.
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image: /media/museum/photos/acorn_a3020_uncovered_1.jpg
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- title: MOTHERBOARD
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subtitle: ''
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text: |-
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**(1)** Power supply area\
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**(2)** Video and sound custom chip (VIDC)\
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**(3)** Keyboard connector\
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**(4)** Arm-250 RISC processor\
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**(5)** Econet network optional card\
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**(6)** Risc OS 3.0 ROM chips (2 x 256 KB)\
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**(7)** 2 MB RAM chips (4 x Hitachi 514260)\
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**(8)** I/O custom chip from CHIPS (IOC)\
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**(9)** 2 MB expansion RAM sockets\
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**(10)** Floppy disc and hard disc connectors
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image: /media/museum/photos/acorn_a3020_mboard_1.jpg
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- title: CLOSE-UP
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subtitle: ''
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text: ARM microprocessor, RISC-OS ROM and base RAM memory chips. Memory extension DIP chips sockets are empty.
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image: /media/museum/photos/acorn_a3020_cpucloseup_1.jpg
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hardware:
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- title: 486 CARD
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subtitle: ''
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text: Allowed Archimedes series computers to run 32-bit PC-DOS software. It was delivered with a manual, a driver disk and PC-DOS 6.3
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image: /media/museum/hardware/acorn_a39000_486card_1.jpg
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- title: GRAPHICS ACCELERATOR
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subtitle: ''
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text: |-
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Graphics accelerator card (called "ColourCard") for A3000, Archimedes and A5000.\
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Company : Computer Concepts\
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Enhanced potential for Archimedes series including 15-bit desktop modes (i.e. 800\*600 @ 256 colours).
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Thanks to **Chris Syntichakis**
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image: /media/museum/hardware/acorn_a5000_colorcard_1.jpg
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- title: CUMANA SCSI CARD
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subtitle: ''
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text: |-
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16-bit SCSI-1 card\
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Company: Cumana.\
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There are an external port for scanners/CD-ROM etc. and 2 internal ports for SCSI and Floptical drives.
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Thanks to **Chris Syntichakis**
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image: /media/museum/hardware/acorn_a5000_scsicard_1.jpg
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- title: SERIAL CARD
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subtitle: ''
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text: |-
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From Atomwide's site:\
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High speed serial card featuring three ports, each in the shape of a standard 9-pin ‘D’ plug. Each port on the card is capable of running at up to 460,800 bits per second, and employs a 16-byte FIFO buffer to reduce loading on the host computer’s processor, so improving communications reliability. All serial cards are standard single-width podules, and are fully compatible with Atomwide 6 and 8-slot RiscPC backplanes.
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image: /media/museum/hardware/acorn_a5000_serialcard_1.jpg
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- title: MIDI CARD
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subtitle: ''
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text: Allowed Archimedes systems to interact with any midi sound device.
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image: /media/museum/hardware/acorn_a4000_midicard_s1.jpg
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emulators:
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- title: Arculator
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url: http://b-em.bbcmicro.com/arculator/
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platform: Windows
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text: An excellent Windows-based Archimedes emulator, plays many games and has simple usage.
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- title: Red Squirrel
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url: http://www.red-squirrel.org/
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platform: Windows
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text: An Emulator of Arm based Acorn machines for Windows 98/ME/2000/XP
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- title: Virtual Acorn
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url: http://www.virtualacorn.co.uk/
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platform: Windows
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text: Excellent but commercial software - £30
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- title: ARCHIE
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url: http://www.geocities.com/siliconvalley/campus/5427/
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platform: Multiplatform
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text: Archie is an emulation of the Acorn Archimedes hardware (A3xx/A4xx/A3xxx) for DOS/Windows
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links:
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- title: Web Wiz CAPTCHA
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url: http://www.webwizcaptcha.com
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text: ''
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docs:
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- title: TOM'S ARCHIMEDES DOCS (INTERNAL HARDWARE)
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url: http://b-em.bbcmicro.com/arculator/index.html
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cover: /media/museum/docs/couvs/vide.gif
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text: |-
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[**TOM'S ARCHIMEDES DOCS (INTERNAL HARDWARE)**](http://b-em.bbcmicro.com/arculator/index.html)written by Tom Mowalker
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compiled/archived by Tom Mowalker\
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type of document : HTML\
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source : [Arculator](http://b-em.bbcmicro.com/arculator/index.html)
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related:
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- /museum/acorn-computer-a4
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- /museum/acorn-computer-archimedes
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- /museum/acorn-computer-archimedes-a3000
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- /museum/acorn-computer-archimedes-a3010
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- /museum/acorn-computer-archimedes-a4000
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- /museum/acorn-computer-archimedes-a5000
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- /museum/acorn-computer-archimedes-a7000
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oc_id: 706
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source:
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url: https://web.archive.org/web/20230129160638/http://www.old-computers.com/museum/computer.asp?c=706
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date: '2023-01-29'
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---
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The Acorn Archimedes [A3000](/museum/acorn-computer-archimedes-a3000/) was replaced by the Acorn [A3010](/museum/acorn-computer-archimedes-a3010/) and A3020, two simililar but slightly different models, aimed at the home and educational markets.
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The A3020 was a lower-cost replacement for A3000 aimed at British classrooms. The case was slightly shorter at the back and an awkward to reach mouse port that was underneath the A3000 was moved to the back.
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The RISC OS 3 operating system and more curved Logitech-built 3 button mouse used on the A4000/A5000/A4 were included as standard, as well as a 1.6MB floppy drive capable of reading all PC disks as well as the new extended Acorn 1.6MB format.
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Upgrading memory to 4MB of RAM was simple with plug-in ZIP D-RAM chips.
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Looking inside the machine however, Acorn have rather stupidly built-in the 220/240 volt power supply to the motherboard, making conversion to run on 110 volts for US and Japanese users impossible without very serious modification. If the power supply unit fails then repair would also be difficult.
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The Acorn A3020 had a hard disk controller to which a standard 2.5" laptop-style hard disk could be added, and a DB-15 network port which the A3010 did not have.
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Thanks to **Jonathan Hayward** for his help in Archimedes models.
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