Amiga 4000.. the Holy Grail of Amiga Computing

Submitted by binaryvalue on Mon, 07/11/2022 - 09:26


Released in October 1992 by Commodore, Amiga 4000 is the last and most powerful Amiga computer ever built. Featuting a 32-bit architecture and AGA graphics (24-bit), A4000 offers access to the full library of Amiga software. The computer is highly upgradeable and that includes accelerators, memory, CD-Rom drives, graphics, network, and audio cards, and even a 486 card for running old IBM PC software..

  • The Amiga 4000/40 was originally sold for $3,700 ($7,620 in today's money), later, the Amiga 4000/30 was sold for $2,400 ($4,900 in today's money)
  • Only 35,000 desktop A4000 were ever sold
  • There was also a tower model, only 3,000 towers (A4000T) were ever sold, it is estimated that Commodore sold 200 A4000T, and the rest were sold by Escrom

glanceA4000 AT A GLANCE

  • Compatible with old Amigas (OCS & ECS)
  • 68030 at 25MHz or 68040 at 25MHz CPUs for the desktop A4000
  • 68040/68060 CPUs for the tower variant (A4000T)
  • 3.0/3.1 Amiga Operating System
  • GUI and preemptive multitasking / no-protected memory
  • AGA graphics (24-bit color / 16.8 million colors)
  • 4 PCM sound channels (27 kHz)
  • 2 MB Chip Ram, and up to 16 MB RAM on board, 128 MB RAM via the CPU, and more memory via Zorro III slots
  • 512 KB Kickstart ROM
  • 880K floppy disk drive (built-in)
  • Highly expandable computer (5 × Zorro III slots, 4 × 16-bit ISA slots, 2 × AGA video slots)
  • The SCSI on previous Amigas was replaced by the Parallel ATA

variants A4000 Models

Amiga-4000 Tower
Amiga 4000T German advertisement

Amiga 4000 Desktop Models

There are two main A4000 desktop models:

  • A4000/040 with a Motorola 68040 CPU at 25MH, released in October 1992
  • A4000/030 with a Motorola 68EC030 at 25MH, released in April 1993

Amiga 4000 Tower

Released in 1994, the Amiga 4000 tower is featuring a 68040 or a 68060 CPU.

The Amiga 4000T was originally released by Commodore with a 25 MHz Motorola 68040 CPU. Later, in 1995, it was upgraded and re-released in greater numbers by Escom. The Escrom A4000T features a 50 MHz Motorola 68060 CPU. The Escrom Amiga 4000T was in production until 1997.

  • Can have 16 MB of RAM on the motherboard, up to 128 MB of RAM on CPU boards, and more RAM on Zorro cards
  • Offers 2 Video Slots, 5 Zorro III slots, and 4 ISA slots
  • The A4000 tower is the only Amiga to have (built-in) on the motherboard both SCSI and IDE interfaces
  • Can accommodate up to 6 drives

 graphics Graphics & Modes

The A4000 features 24-bit graphics, and more specifically, Commodore's Advanced Graphics Architecture chipset (AGA). This means it offers the same graphics as the CD32 console and the A1200  computer.

  • 24-bit (16.8 million colors), up to 256 on-screen colors
  • 262,144 on-screen colors in HAM-8 mode
  • Resolutions from: 320×200 to 1504x576 overscan (PAL)
  • Improved hardware sprites and scrolling compared to OCS/ECS Amigas

AGA Resolutions:

  • 320×200 to 1280×400, 1504x484 overscan (NTSC)
  • 320×256 to 1280×512, 1504x576 overscan (PAL)
  • 640×480 (VGA)

 sound Sound Capabilities

A4000 offers the same sound chipset as other Amigas.

  • 2 stereo channels (4 × 8-bit PCM)
  • 28 kHz DMA sampling rate, and up to 57 kHz
  • The hardware channels have independent volumes (65 levels)
  • Software controllable low-pass audio filter

 ports I/O Ports & Expansion Slots

  • Amiga 4000 NASA
    Amiga 4000 was officially used by NASA (Source)
    2 × Mouse/Gamepad 9-pin ports
  • Keyboard (5 pin DIN)
  • RGB monitor output (DB-23M)
  • Audio out Left & Right (2 × RCA)
  • Audio out (3.5mm headphone jack)
  • Standard 25-pin RS-232 serial port (DB-25M)
  • Centronics style parallel port (DB-25F)
  • Fast SCSI-2 (D-High density DB-50F)

Expansion Slots

  • 5 × Zorro III slots (100pin, 32-bit)
  • 4 × 16-bit ISA slots (require bridgeboard)
  • 2 × AGA video slots
  • 1 × CPU expansion slot (200-pin)
  • 4 × SIMMs slots (72-pin)

monitors Suitable Monitors

 A4000 can be connected to TVs, RGB monitors, 15-kHz VGA monitors, or even modern HDMI monitors with the right video upscaling hardware.

  • Commodore monitors (1084, 1942, etc.)
  • Other RGB monitors (Philips CM 8833, etc.)
  • 15 kHz VGA monitors with an RGB to VGA adapter (monitors such as the BenQ) 
  • TVs via SCART cable (RGB to SCART cable)
  • Modern VGA/HDMI monitors via video upscaling hardware

 upgrades A4000 Upgrades

A4000 is highly upgradeable. First of all, by adding an 8MB Fast Ram and an SD card hard drive you can use the Amiga WHDload software. WHDload enables access to thousands of Amiga games and apps.

  • 68040/68060 accelerators for desktop models
  • Graphic cards (Picasso IV, ZZ9000)
  • Indivision AGA flicker fixer (improves VGA output)
  • Audio cards (Prisma Megamix, ZZ9000AX, SoundBlaster, etc.)
  • Network cards
  • On-board IBM-PC-compatible hardware emulation (80286/80386 or 80486)
  • The iconic Video Toaster
  • Internal CD-ROM drive
  • Internal Gotek drive
  • Internal ZIP drive


■ Amiga 4000

G.P. for 2022 (c)