Thomas Gerner has committed changes to convert the
NetBSD/atari port to ELF. With the
COMPAT_AOUT_M68K kernel option, all your old a.out binaries should
still work. Note that a.out versions of ifconfig(8) and
route(8) will not work due to some structure
alignment problems.
A NetBSD/atari ELF snapshot is available in the atari
snapshot
area of the ftp server.