Physical IOCS (PIOCS)

Supervisory routines that schedule and supervise the execution of channel programs. It controls the actual transfer of records between external storage and main storage, and provides I/O device error recovery.; 調度和監督通道程序執行的一種監控例行程序,控制外存和內存之間記錄的實際傳 送,并對輸入輸出設備出錯提供恢復功能。