ypch              135 src/dps8/shm.c   int ypch = 0;
ypch              162 src/dps8/shm.c                   ypch++;
ypch              163 src/dps8/shm.c                   if (ypch == 1)
ypch              175 src/dps8/shm.c       if (lkpid != 0 && ypch == 0)