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    • 9. 发明授权
    • Performing a perform timing facility function instruction for sychronizing TOD clocks
    • 执行用于同步TOD时钟的执行定时设备功能指令
    • US08135978B2
    • 2012-03-13
    • US12540261
    • 2009-08-12
    • Eberhard EnglerMark S. FarrellKlaus MeissnerRonald M. Smith, Sr.Evangelyn K. Smith, legal representativeMark A. Check
    • Eberhard EnglerMark S. FarrellKlaus MeissnerRonald M. Smith, Sr.Mark A. Check
    • G06F1/04G04C11/00
    • G06F1/14
    • A system, method and computer program product for performing a Perform Timing Facility (PTFF) instruction for steering a Time of Day (TOD) clock of the computer system for synchronizing the TOD clock with TOD clocks of other computer systems. The computer system comprises a memory; and, a processor in communications with the computer memory. The processor is capable of performing a PTFF instruction comprising: obtaining a function code specified in a first general register, the function code for identifying any one of a query function or a control function to be performed; obtaining, from a second general register, a memory address of a parameter block; responsive to the function code specifying a query function, storing timing information of the computer system in the parameter block according to the specified query function; responsive to the function code specifying a control function, using timing information obtained from the parameter block to perform the specified control function; and setting a condition code value indicating an outcome of the specified function.
    • 一种用于执行用于使TOD时钟与其他计算机系统的TOD时钟同步的计算机系统的时间(TOD)时钟的执行定时设备(PTFF)指令的系统,方法和计算机程序产品。 计算机系统包括存储器; 以及与计算机存储器通信的处理器。 处理器能够执行PTFF指令,包括:获得在第一通用寄存器中指定的功能代码,用于识别要执行的查询功能或控制功能中的任何一个的功能代码; 从第二通用寄存器获取参数块的存储器地址; 响应于指定查询功能的功能代码,根据指定的查询功能将计算机系统的定时信息存储在参数块中; 响应于指定控制功能的功能代码,使用从参数块获得的定时信息来执行指定的控制功能; 并设置指示指定功能的结果的条件代码值。