program check (PC)

1. A condition that occurs when programming errors are detected by an I/O channel.; 當輸入輸出通道檢查出程序設計有錯時所出現的一種狀態。 2. In System/7, an error condition that occurs when the processor attempts to execute an invalid operation code or attempts to access an address outside the capacity of the machine. This condition is signalled by a class interrupt. | 在IBMSystem/7中,當處理機試圖執行一個無效操作碼或試圖存取一個超出計算機容量的地址時所 出現的一種差錯狀態。這種狀態用某一類中斷告知。參閱machine check, I/O。