LOL, it's 64MB of slow a4000 motherboard "FAST ram" and it's achieved reprogramming some GALs, cuting traces and passing wires. I know an user with that trick. The guy who made that hacks left the amiga scene 6-7 years ago. He worked as technical repair service for cbm and asked David Haynie the sources of various GALs. He reprogrammed the IDE port to make it faster on old A4000 motherboards (I heard newer ones changed from GALs to PALs so the code probably would be useless). I know 2 people with the IDE hack. With a CS MKII 060 the standard IDE transfers around 5MB/s.
Please notice that these hacks involved de-soldering the old GAL and soldering the new one so it was not so easy. He did the hack at some spanish parties. The memory hack was more complex and required that you sent him the motherboard. Unfortunately I doubt I still have his phone number.
