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Terrible Fire 534 accelerator has been designed to be installed inside Amiga 500/500 . It provides a Motorola 68030 CPU and a 68882 math coprocessor clocked at 33, 40, or 50 Mhz, 4MB of RAM, and a 2,5" IDE connector for hard drives and CF adapters. If you want to add 512 or 1MB of CHIP RAM, please check our Trapdoor Memory Expansions for Amiga 500 and Amiga 500 Plus. They are the perfect complement to the Terrible Fire Accelerator.
Github - https://github.com/terriblefire/tf534