BigRamPlus is a 256 MByte memory expansion for any Amiga with Zorro-III slots, i.e. Amiga 3000, Amiga 3000T, Amiga 4000 and Amiga 4000T.
BigRamPlus is only guaranteed to work with the original daughter boards of these computers. It may or may not work properly with third party bus boards made by Micronik, RBM, Eagle, Elbox, etc.
Memory is used by all operating systems up to OS3.9 automatically. Linux/BSD may need special patches to use this memory.
AmigaOS 4.0 does not permit the use of a Z3 memory card, the computer won't even boot into the OS. AmigaOS 4.1 can use the card's memory as swap memory. Starting with OS4.1FE, update#1, this memory can be used as main memory.
You will need in addition to that:
When installing this card on an Amiga 4000. Here is what you need to do. If you install in any other slot than the lowest available slot which is above the chip ram facing the front of the computer, it will work. Errors occur in all software rendered, rather most. Even the the ram is present in tests and the OS. Putting the ram in any other slot, other than the lowest towards the front and motherboard, will cause most programs to crash. It is tested and working now, 100 percent by trouble shooting and figuring out the ram will only work properly in one port. GREAT PRODUCT , AAA +++ ...