ts_ntsc
if( tv_format < ts_ntsc || tv_format > ts_max )
tv_format = ts_ntsc;
if( tv_format < ts_ntsc || tv_format > ts_max )
tv_format = ts_ntsc;
case ts_ntsc:
case ts_ntsc:
if( tv_format == ts_ntsc )
case 1: vc->tv_standard = ts_ntsc; break;
vc->tv_standard = ts_ntsc;