PREFETCH_FLUSH_CNT
ncrcmd select2 [ 9 + PREFETCH_FLUSH_CNT];
ncrcmd cleanup_ok [ 8 + PREFETCH_FLUSH_CNT];
ncrcmd resel_dsa [ 6 + PREFETCH_FLUSH_CNT];
ncrcmd jump_to_nexus [ 4 + PREFETCH_FLUSH_CNT];
ncrcmd skip [ 9 + PREFETCH_FLUSH_CNT];
ncrcmd start_ram [ 4 + PREFETCH_FLUSH_CNT];