Method and apparatus for dynamic extension of channel programs
    1.
    发明授权
    Method and apparatus for dynamic extension of channel programs 失效
    频道节目动态扩展的方法和装置

    公开(公告)号:US6012104A

    公开(公告)日:2000-01-04

    申请号:US957044

    申请日:1997-10-24

    摘要: The present invention provides a method, system, and computer program product for extending channel programs in a computer system which uses a channel sub-system. An initial channel program is built to end with a terminating channel command word (CCW) followed by a dummy CCW. When required, a new channel program is built separately, then the dummy CCW in the initial channel program is modified to transfer channel execution to the new channel program. Once modification of the dummy CCW is completed, the terminating CCW in the initial channel program is modified to allow the newly-built transfer CCW to execute.

    摘要翻译: 本发明提供一种用于在使用信道子系统的计算机系统中扩展信道节目的方法,系统和计算机程序产品。 一个初始通道程序被构建为以一个终止通道命令字(CCW)和一个虚拟CCW结束。 当需要时,单独构建新的通道程序,然后修改初始通道程序中的虚拟CCW,将通道执行传送到新的通道程序。 一旦虚拟CCW的修改完成,初始通道程序中的终止CCW被修改,以允许新建的传送CCW执行。