I have a board with a DS80C310. I have been using Keil tools for years. We are considering expanding from 48K of RAM to 128K RAM. I was reading the Keil newsletter which discusses the new LX51 Extended Linker product. This sounds like it will do the trick. What do I have to do to take advantage of this capability (other than buy the upgrade)? Do I need to make any hardware changes? Do I need to define the memory as FAR instead of XDATA? Is accessing memory in the first 64K different than in the upper 64K? Can I transparently access one large array that starts in the lower 64K and runs up into the upper 64K?