interrupt service task(IST)
In Series/1, a user or systemsupplied task that is connected to an I/O interrupt and is dispatched by a first level interrupt handler (FLIH) on occurrence of the interrupt.; 在IBMSeries/1中,一種用戶任務(wù)或系統(tǒng)提供的任務(wù),它與輸入輸出中斷連接,并在這類 中斷發(fā)生時由第一級中斷管理程序(FLIH)調(diào)度。