Shostfile(argv[++i]); /* set new name for host file */
break;
case 'D': /* turn on debugging */
debug=1;
break;
case '#': /* set the clock speedup */
speedup=atoi(argv[i]+2); /* get the speedup factor */
if(speedup!=1 && speedup!=2 && speedup!=4 && speedup!=8 && speedup!=16 && speedup!=32) /* only accept multiples of two between 1 and 32 for the speedup factor */