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C > COMMODORE  > AMIGA 4000   

AMIGA 4000

In 1992 Commodore launched the most advanced Amiga yet. The A4000 used the AGA chipset to allow it to show 256,000 colours on screen from a palette of 16.8 million, as well as the new Workbench 3 that introduced the concept of among other things, datatypes. The Amiga 4000 is one of the most powerful Amigas ever made.

As a replacement for the A3000 & A3000T, the A4000 was a combination of the A2000 (big box), A3000 (vertical slots (integrated hard drive controller) and A1200 (AGA chips). As standard it allows memory expansion for up to 18Mb RAM on the motherboard. It shipped with either a 25 MHz 68030/68882 or 25 MHz 68040 CPU. The A4000 was never intended for release, but was a prototype for a system known as the A3000 Plus which was a considerably better machine. The machine was eventually cancelled and the A4000 drafted for release due to the low cost of development.

Like the Amiga 3000, the 4000 has 2 MB of chip RAM (reserved for its coprocessors) and 4 MB of fast RAM (used directly by the 68040).

The Amiga 4000 mainboard was planned to use the AAA chip (the video custom chip designed to replace the AGA chip), the AAA chip was theoretically designed to use 8 MB FastRAM (see the "Chip RAM : ON=2MB, OFF=8MB" jumper on the motherboard), unfortunately, Commodore didn't use this chip, so this jumper is absolutely useless.

There's an internal 120 MB IDE hard disk and 4 expansion slots: three ISA slots (for PC compatible cards) and one dedicated 32 bit video slot used for graphics cards.

The Amiga 4000 works under WorKBench 3.0, a very powerful and flexible multitasking system which looks like UNIX, it can read & write directly to DOS 1.44 Mb floppy disks.

The Amiga 4000 was mainly used for video production but was in direct competition with the PC compatibles when most of its major products (ImageIn, Real 3D, & Lightwave, to name a few) were adapted for Windows.

There were in fact two models of Amiga 4000 :
- the A4000-040 released in September 92 with a Motorola 68040 Processor, 6 Mb RAM, internal 3.5" 1.76 Mb Floppy Drive and 120 Mb IDE Hard Drive,
- and the A4000-030 released March 93, with Motorola 25MHz 68030EC processor, 4Mb RAM (2Mb Chip, 2Mb Fast), 3.5" FDD, 120Mb hard disk, etc.

There was even a more powerful successor called Amiga 4000T ("T" stands for Tower). The A4000T is basically an A4000 in a full tower case with IDE & SCSI-2 Fast controllers integrated as well as 2 video slots and shipped with a 25MHz 68040 processor.

A lot of expansion hardware has been developed for the 4000/1200 : Video cards (2000 x 1500 in 24 bit), 3D cards, Wide SCSI controllers and PowerPC 604e/233 MHz accelerator cards.

The Amiga scene is still very active and great software is still being developed.

Source : Amiga Interactive Guide.

Todd Deery reports:
There was at least one other version of the Amiga 4000 available (at least in Canada) -- the Amiga 4000LC. This version contained the 25Mhz LC version of the 68040, which lacked a math coprocessor.

from Chris Coulson:
Here in the UK, the 4000-030 (not sure if this is true for the -040 as well) was also available with an 80MB HD in place of the 120MB drive.

Please consider donating your old computer / videogame system to or one of our partners from anywhere in the world (Europe, America, Asia, etc.).


Some of the information in the main text body is incorrect, in addition to 3 ISA slots and 1 AGA video slot, there are also 4 Zorro III slots for cards designed specifically for Amigas. The ISA slots are not active, in their factory configuration they only provide power lines. You need a bridgeboard that connects to both a Zorro and an ISA slot to make them active. The Zorro III slots are also backwards compatible with Zorro II cards, such as cards designed for the Amiga 2000.

Sunday 11th September 2011
Conrad (Vancouver, British Columbia, Canada)

Software hut is still selling most versions of the amigas there web site address is

Monday 5th September 2011
ProgMizer (USA)

Where can i get a Amiga 400 CHEAP with Video Toaster installed in it ????

Friday 27th February 2004
brandon (Pasadena,California)


TYPE  Home Computer
YEAR  1992
KEYBOARD  detachable full-stroke keyboard with 10 function keys and cursor keys and separate numeric keypad
CPU  Motorola MC68EC030 (Eco version of the 68030) or MC68040
SPEED  25 mHz
CO-PROCESSOR  Alice (Blitter and Memory Manager), Lisa (Video chip)
RAM  2Mb CHIP RAM + 2Mb or 4Mb Fast RAM (up to 16 Mb, and theorically to 4 Gb)
ROM  512 Kb
TEXT MODES  60 x 32 / 80 x 32
GRAPHIC MODES  from 320 x 200 to 800 x 600 or 1280 x 400 and more with overscan
COLORS  16.8 millions colors
2 to 256,000 user-definable colours displayable on screen
SOUND  Four channel stereo sound, 8 bits D/A converters
SIZE / WEIGHT  15 1/4'' deep x 15'' wide x 5'' high / 20 pounds
I/O PORTS  Centronics, RS232c, internal and external disk-drive ports, internal AT IDE port, keyboard, audio stereo output, mouse/joysticks (2), RGB,optional SCSI adapter, Four 16/32-bit Zorro III expansion slots, Three PC AT slots, Video slot
BUILT IN MEDIA  3.5-inch high density disk drive (880 KB/1.76 MB formatted) and 120Mb hard-drive
OS  AMIGA WorKBench 3.x, AmigaDOS 3.0

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