QV_SYNC_VEC
qv_ic_setvec(ua, QV_IC, QV_SYNC_VEC, uh->uh_lastiv - 4);
qv_ic_enable(ua, QV_IC, QV_SYNC_VEC, QV_IC_ENA);
qv_ic_arm(ua, QV_IC, QV_SYNC_VEC);
qv_ic_force(ua, QV_IC, QV_SYNC_VEC);
qv_ic_enable(ua, QV_IC, QV_SYNC_VEC, QV_IC_DIS);