Acorn A4000

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The Acorn A4000 was a slightly cheaper cut down A5000, with a shorter case, one expansion slot and an ARM250 processor.

Curiously, the machine had its floppy and hard drive fixed to the chassis with a wire clip which meant these could be quickly replaced without tools, whereas replacing the hard disk on the A5000 was a more fiddly operation requiring the expansion slot plane and the whole chassis holding the drives to be removed.

Many of the features (ARM250, VGA screen modes, RISC OS 3) of this model were implemented into the lower end A3010 and A3020 computers.

The keyboard was a much cheaper type more similar to a generic PC unit.

Text & photograph courtesy of www.old-computers.com

Manufacturer: Acorn
Date: January 1991

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Acorn A4000 Manuals:

Item	Manufacturer	Date
Acorn Special Access Guide	Acorn	Aug 1992

Magazines RELATED to Acorn A4000 in our Library

Item	Manufacturer	Date
Archive - Vol 1, No 1 - October 1987	Norwich Computer Services	Oct 1987
Archive - Vol 1, No 2 - November 1987	Norwich Computer Services	Nov 1987
Archive - Vol 1, No 3 - December 1987	Norwich Computer Services	Dec 1987
Archive - Vol 1, No 4 - January 1988	Norwich Computer Services	Jan 1988
Archive - Vol 1, No 5 - February 1988	Norwich Computer Services	Jan 1988
Archive - Vol 1, No 6 - March 1988	Norwich Computer Services	Mar 1988
Archive - Vol 1, No 7 - April 1988	Norwich Computer Services	Apr 1988
Archive - Vol 1, No 8 - May 1988	Norwich Computer Services	May 1988
Archive - Vol 1, No 9 - June 1988	Norwich Computer Services	Jun 1988
Archive - Vol 1, No 10 - July 1988	Norwich Computer Services	Jul 1988
Archive - Vol 1, No 11 - August 1988	Norwich Computer Services	Aug 1988
Archive - Vol 1, No 12 - September 1988	Norwich Computer Services	Sep 1988

Catalogues RELATED to Acorn A4000 in our Library

Item	Manufacturer	Date
Silica - The Amiga Guide	Silica	1 Oct 1994

Other Systems Related To Acorn A4000:

Item	Manufacturer	Date
Acorn NetStation Proton Xavier	Acorn Computers	Unknown
Acorn 6502 Microcomputer Board	Acorn Computers Ltd	1979
Acorn System 1	Acorn Computers	March 1979
Acorn System 1	Acorn Computers Ltd	March 1979
Acorn System 1 (Chris Turner)	Acorn Computers Ltd	March 1979
Acorn System 3	Acorn	1980
Acorn Atom (Blue Box)	Acorn	1980
Acorn Atom (White Box)	Acorn	1980
Black Acorn Atom	Acorn	January 1980
Acorn BBC Micro Model A (Issue 2 Board)	Acorn Computers Ltd	1981
Acorn BBC Micro Model A - Issue 1	Acorn	1981
Acorn BBC Micro Model B Hong Kong	Acorn	1981
Acorn BBC Micro Model A	Acorn	1981
Acorn BBC Micro Model B	Acorn	1981
Busicomputers Prophet 3	Acorn Computers Ltd	1982
Acorn System 4	Acorn Computers Ltd	1982
German BBC Micro (GNB09)	Acorn	1982
Busicomputers Prophet 2	Acorn	1983
Acorn Cambridge Workstation	Acorn	1983
Acorn Business Computer (ABC) (Prototype)	Acorn Computers	1983
Acorn System 5	Acorn Computers Ltd	1983
Acorn Business Computer (ABC 110)	Acorn	1983
Acorn Electron (Trial ROM From Astec)	Acorn Computers Ltd	May 1983
Acorn Electron with Turbo Board	Acorn	July 1983
Acorn Electron (Box with Tile Design)	Acorn	July 1983
Acorn Electron (Production Mock Up)	Acorn Computers Ltd	July 1983
Acorn Electron (Trial ROM)	Acorn Computers Ltd	July 1983
Acorn Electron	Acorn	July 1983
Acorn Electron (German)	Acorn	July 1983
BBC Micro B+ 128K + 48K ROM	Acorn	1984
Acorn BBC Micro Model B+ 64K (Acorn R&D)	Acorn	1984
US BBC Micro (UNB09)	Acorn	October 1984
Acorn BBC Micro Model B+ (128K)	Acorn	July 1985
Acorn BBC Micro Model B+ (64K)	Acorn	July 1985
Acorn Econet Terminal	Acorn Computers Ltd	1986
BBC Master Used on Microlive	Acorn Computers	1986
Acorn BBC Master 512	Acorn	1986
Acorn A500	Acorn	1986
Acorn BBC Domesday System	Acorn Computers Ltd	1986
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Acorn - BT Merlin M2105	Acorn Computers / British Telecom	13th May 1986
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Acorn AEH02 Archimedes NSM	Acorn Computers Ltd	1987
Acorn Archimedes 310	Acorn	1987
Acorn Archimedes 305	Acorn	1987
Acorn Archimedes 310 (Arthur 1.2 Installed)	Acorn	1987
Acorn Archimedes 440	Acorn Computers	July 1987
Acorn A680	Acorn	1988
Acorn Archimedes A500	Acorn	1988
Acorn A3000	Acorn	1989
Acorn Archimedes A440/1 Serial No. 1000001	Acorn Computers	May 1989
Acorn Archimedes A440/1	Acorn Computers	May 1989
Acorn A3000 (Learning Curve Box)	Acorn	May 1989
Acorn A3000 (Original Spec)	Acorn Computers	1st May 1989
Acorn A3000 Laservision System	Acorn	1st May 1989
Acorn R140	Acorn	June 1989
Acorn R260	Acorn Computers	1990
Acorn A5000 ALB55	Acorn	1991
Acorn A5000 ALB35	Acorn	1991
Acorn A4 Laptop (Prototype 1 of 7)	Acorn Computers	1992
Acorn A4 Laptop	Acorn	1992
Acorn A3020	Acorn	January 1992
Acorn A4000	Acorn	September 1992
Acorn A3010	Acorn	September 1992
Semerc Acorn A4000S	Acorn	September 1992
Acorn Risc PC 600 Prototype Motherboard	Acorn Computers	1994
Acorn Risc PC 600	Acorn	April 1994
Acorn Risc PC 600 ACB25	Acorn	April 1994
Acorn Risc PC 600 ACB45	Acorn	April 1994
Acorn RISC PC 600 (Proto 6)	Acorn	1995
Acorn RISC PC 600 - Prototype	Acorn Computers	1995
Acorn A7000+	Acorn	1995
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Acorn SchoolServer	Acorn Ltd	1995
Acorn RISC PC700 System	Acorn	July 1995
Acorn Risc PC 600 ACB60	Acorn	July 1995
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Acorn Stork Notebook	Acorn Computers Ltd	1996
Acorn Xemplar Matrix NC	Acorn	1996
Acorn Fast NC - Serial Number 1	Acorn Computers Ltd	1996
Acorn NetStation NC	Acorn	November 1996
Acorn Phoebe	Acorn Computers	1998
Acorn DeskLite Prototype	Acorn Computers	June 1998