Commodore Amiga 4000

A desk model of Amiga 4000.

The Amiga 4000 computer was the successor to the A2000 and A3000 computers. The A4000 came in a white desktop cabinet with a separate keyboard. There was also a "tower" (tower), called A4000T.

Desktop version features:

• 2 spaces for 3.5-inch discs accessible from the front.
• 1 5.25 inches disk space accessible from the front.
• 1 3.5 inch, high density, flexible disk reader.
• Two internal 3.5-inch bays.
• Chipset AGA.
• IDE disc interface
• Processor in two versions, Motorola 68030 and Motorola 68040.
• 2 Megas memory chip and a maximum of 16 Megas memory fast on the base plate.

The early A4000s, unlike most other Amigas, had the CPU mounted on a 'daughter' board, using a special slot. The motherboard had no CPU. Newer machines had the CPU mounted on the motherboard, in an effort to reduce costs.

The "tower"version was the only Amiga to have SCSI and IDE together, built into the motherboard. Having the software driver for both interfaces loaded in ROM meant that some other parts of the AmigaOS operating system had to be removed from the ROM, and the A4000T is the only machine to have a "workbench" On the disk.