CRT_ID_EXT_MISC_CNTL_2
test = RCrt(ba, CRT_ID_EXT_MISC_CNTL_2);
WCrt(ba, CRT_ID_EXT_MISC_CNTL_2, clock_mode | test);
test = RCrt(ba, CRT_ID_EXT_MISC_CNTL_2);
WCrt(ba, CRT_ID_EXT_MISC_CNTL_2, clock_mode | test);