.\" $NetBSD: whatis,v 1.1 2002/04/02 11:36:35 skrll Exp $ . This is the first major release of .Nx*M . Previous versions of .Nx supported the \*M platform as part of .Nx Ns /arm32 . .Pp Unlike previous releases of .Nx for the ARM architecture, the \*M port uses the ELF binary format. However, .Nx \*V on \*M is, as usual, fully backward compatible with old .Nx a.out binaries, so you don't need to recompile all your local programs provided you set the appropriate binary compatibility options in your kernel configuration.