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Technical specifications:
  • Motorola 68000 (32-bit CISC microprocessor with 16 registers lacking MMU for memory protection and virtual memory) running at 7.16 MHz (NTSC version), 7.09 MHz (PAL version)

  • Default operating system AmigaOS 1.2 or 1.3 (having 32-bit Pre-emptive Multitasking Microkernel ) depending on the revision

  • 512 KB of Chip RAM by default (sound buffers, graphics buffers and software existed in the same memory space)

  • ---upper limit of 16 MB of memory due to MC68000 limitations (24-bit external Address Bus )

  • OCS / ECS chipset

  • 50 Hz PAL and 60 Hz NTSC TV output by default versions available; 50/60Hz mode switchable by software in later revisions

  • software-switchable low-pass audio filter (power LED shows filter status, darker when off)

  • IRQ sharing (like the PCI bus)

  • IRQ system had 7 priority levels of Interrupt s

  • ---No limit on number of interrupts available

  • ---Resources handled by Autoconfig, very similar to ACPI , resources were not numbered or labelled, just given as amounts and addresses

  • No specific I/O ports, instead using memory mapped I/O space separately for each hardware device (thanks to Jay Miner )


Amiga 500 was used a lot for gaming, and there were a variety of Atari -style game controllers that could be used. One of the most popular ones was TAC-2 , The Totally Accurate Controller mk2 by Suncom .



The A500 designation was also used on an internal Acorn Archimedes development machine {Link without Title} .

The A500 often featured the words " The B-52s Rock Lobster" written on the motherboard, in reference to the popular song of that time period.