chip ram A2000

[stanlong]

how do we add chip ram to an A2000

[stanlong]

not sure of the word demux

rkauer wrote:

 Depends on the motherboard revision: versions prior to 4.0 are terrible to add a new Agnus.

 for newer boards, just a Megachip, MiniMegiChip or Megichip. Those are boards with the "updated" 8375 Agnus and one more Megabyte on it. Expect to pay around US$100 or more for one of those babies.

 If your board is 6.0 or newer, there is a hack: piggybacking the same memory chips over the original ones, bending one of the address pins, adding a demux inside the Amiga and more important: adding a 8372AB Agnus (the one from the A3000).

 The last Agnus is the only one compatible with the A2000.