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The BigRamPlus is a 256MB memory expansion for all Amigaswith Zorro III slots (Amiga 3000, Amiga 3000T, Amiga 4000 and Amiga 4000T).
The function of BigRamPlus is only guaranteed with theoriginal daughterboard of these computers; BigRamPlus may not work with busboards such as those found in tower conversions from Eagle, RBM, Mikronik orElbox.
The memory is used automatically by all operating systems upto OS 3.9. For Linux/BSD you may need patches, but these are already availablein the current versions.
The fatally flawed AmigaOS 4.0 cannot use Z3 memory at all and simply won't boot. From OS 4.1,Z3 memory can be used for the swap file. From Amiga OS4.1FE Update #1 thismemory can also be used as main memory.