DIR CVS
   DIR aarch64
   DIR alpha
   DIR arm
   DIR coldfire
   DIR hppa
   DIR i386
   DIR ia64
   DIR m68000
   DIR m68k
   DIR mips
   DIR mips64
   DIR mipsn64
   DIR or1k
   DIR powerpc
   DIR powerpc64
   DIR riscv32
   DIR riscv64
   DIR sh3
   DIR sparc
   DIR sparc64
   DIR vax
   DIR x86_64