OpenAmiga600FastRamExpansion is an Open Hardware 4 MB Fast RAM Expansion for the Commodore Amiga 600 Computer.

Most low-end Amiga models only came with Chip RAM. "Big Box" models allowed for a different type of memory to be installed, known as Fast RAM, where fast means that it's dedicated to the main processor, so that it doesn't have to compete with the other chips in order to gain access to it (as is the case with Chip RAM). While both Chip and Fast RAM are limited in size, you can have at least a few MB of the latter on all Amigas (usually up to 8), while the former can never exceed 2 MB.

OpenAmiga600FastRamExpansion will allow you to add 4 MB of Fast RAM to your Amiga 600. This way you will be able to run more applications at once and more quickly. If you combine it with a chip RAM expansion, you will also be able to run almost all games supported by WHDLoad, pushing the smallest of the Amigas to its limits. The Fast RAM will be mapped to $200000-$5fffff, which means it will not interfere with the PCMCIA address space.

For more information, please visit github.com/SukkoPera/OpenAmiga600FastRamExpansion.