...MD realizes it, and at present they develop several independent versions of the compiler together with famous software development companies. I won't unveil their names - AMD will do it if necessary. You just should know that at launch the processor will have the required support of the compiler allowing using its architectural advantages. Release of the processor without a compiler is also possible - the processor perfectly executes the old 32bit code. But, still, it's much better to put the processor into production paired it with a proper compiler.
To demonstrate full compatibility of its baby AMD tested the new processor in over 50 OSes. Here are some of the configurations:
* Windows (3.1, 9x, Me, 2000 Pro, 2000 Server, 2000 Advanced Server, WfW, XP)
* Windows NT (3.51 WS, server, 4.0 w/SP6, NT 4 Workstations)
* DOS (MSDOS 6.21, Novell DOS 7.0, PC DOS 6.1, 6.3, 7.0
* Linux (Mandrake 7.0, 7.1, Redhat 6.0, 6.1, 6.20, 7.0, Slackware 1.2, 2.0, SuSE 7.0)
* Unix (SCO, FreeBSD 3.0, Solaris 2.5, 2.6, 7, 8)
* Misc (OS/2 Warp3.0, 4.0, BeOS 4.5, 5.0, Netware 4.11, 4.2, 5.0, 5.1)
Source: Digit-Life