usecs_walltime    118 src/simh/scp.h t_stat sim_activate_after (UNIT *uptr, uint32 usecs_walltime);
usecs_walltime    119 src/simh/scp.h t_stat _sim_activate_after (UNIT *uptr, uint32 usecs_walltime);
usecs_walltime   3224 src/simh/sim_tmxr.c t_stat tmxr_activate_after (UNIT *uptr, uint32 usecs_walltime)
usecs_walltime   3226 src/simh/sim_tmxr.c return _sim_activate_after (uptr, usecs_walltime);
usecs_walltime    267 src/simh/sim_tmxr.h t_stat tmxr_activate_after (UNIT *uptr, uint32 usecs_walltime);