> On a pure 64 bit CPU, unless the 32-bit compatiblity problem is solved with emulation at the OS level, all this old 32-bit stuff is history. And you've alrea

> On a pure 64 bit CPU, unless the 32-bit compatiblity problem is solved with emulation at the OS level, all this old 32-bit stuff is history. And you've already answered your own question. Virtualization and emulation is precisely how this will be cared for. Heck, in a lot of cases, that's already how old 16- and 32-bit software is run, as you also need associated compatible operating systems, not to mention clock timings and so forth in the case of games, and it's a lot easier and more accurate to just fire up DOS or Windows 3.11 in a VM than to run the code natively with OS-level compatibility.