| 术语 | programmed input/output instruction |
| 释义 | programmed input/output instruction 程序控制输入输出指令 An instruction which can be combined with senseandskip instructions to produce a single instruction that performs a test and transfers only if the test result is satisfactory. For example, in some systems, the two functions “sense for ready” and “input” can be combined in one “read” instruction. And, these instructions are interruptable. 一种指令,能够与检测跳转指令结合而成一单个指令, 此指令可以实现测试和仅在测试结果满足时的转移。例如,在某些系统中,“检测是否就 绪”和“输入”两种操作可以组合成一条“读”指令。而这些指令是可中断指令。 |
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