Amiga 1000

General

The Amiga 1000 was the first computer in a series of very powerful and successful machines of the mid 1980s until mid 1990s from Commodore! When the product was released in July, 1985 it was only called "Amiga" not before other models like the Amiga 500, 2000 were introduced, Commodore added the additional 1000 to distinguish between the others.

Different Logo

This short-lived logo was only used on the Amiga 1000.


Amiga check-mark Logo

Technical information

Chip RAM

Originally shipped to developers with 128 KB RAM with an option to extend it to 256 KB. End users got already the 256 KB version with the possibility to upgrade to 512 KB.

Commodore Amiga 1000 with A1050 RAM upgrade (silver box)

Maximum extendable to 8.5 MB total RAM (512KB Chip and 8MB Fast RAM)

Chip RAM: Chipset (Agnus) can only access Chip RAM not Fast RAM
Fast RAM: not accessable by Agnus chip but CPU

CPU

Motorola 68000 with 7.09379 MHz (PAL) or 7.15909 MHz (NTSC)

ROM

Size: 256 KB

Due the instability of the first AmigaOS releases they decided to not put the core OS (=Kickstart) into the ROM, instead AmigaOS was loaded over floppy to a so called WCS (writable control store) or WOM (write once memory). This has the advantage of easy and fast updates but was fatal if the disk has read errors. ;-)

Supported Kickstart versions

1.0, 1.1, 1.2 and 1.3

Mainboard




















Amiga 1000 Mainboard, PAL version

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