Amiga 500 - 1987/88 (Commodore)
A500 , A500 Plus

Just after the A2000 Commodore released its first affordable machine, the A500. It is basically an A2000 in a compact case with limited expansion capabilities, aimed at the low-end users.
The A500 Plus is the same machine with more memory, more screen modes and upgraded Kickstart.
All A500 models has a socketed 68000 @ 7.14 MHz on their motherboard. Upgrading the processor requires the use of an accelerator board attached either to the 68000 socket or the side expansion connector.

up to 2 MB Chip RAM,
up to 32 MB Fast RAM on processor boards,
up to 8 MB Fast RAM on side expansion cards,

The A500 shipped with 512 kB Chip RAM which can be upgraded to 1 MB, while the A500 Plus has 1 MB Chip RAM soldered to its motherboard which can be expanded to 2 MB.
24 bit Fast RAM can be added using trapdoor or side expansion cards up to 8 MB, and 32 bit Fast RAM using processor boards featuring a 68020 or better.

Custom chips
Fat Agnus - OCS / ECS display controller,
Denise / Super Denise - OCS / ECS display encoder,
Paula - audio and I/O controller,
Gary - system address decoder
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