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1. 发明授权

US4821172A Apparatus for controlling data transfer between storages 失效
标题翻译：用于控制存储器之间的数据传输的装置
公开(公告)号：US4821172A
公开(公告)日：1989-04-11
申请号：US83662
申请日：1987-08-10
申请人： Sigeru Kaneko , Yoshio Kiriu
发明人： Sigeru Kaneko , Yoshio Kiriu
IPC分类号： G06F12/00 , G06F13/38 , G06F13/42 , G06F13/00
CPC分类号： G06F13/4234
摘要： An apparatus for controlling a data transfer between storages in an information processing system having a main storage, an extended storage, and a processor in which data is transferred between the main storage and the extended storage by use of a synchronous instruction and an asynchronous instruction. The apparatus includes a unit to hold data transfer control information specified by the asynchronous instruction and a unit to hold data transfer control information specified by the synchronous instruction. Depending on a synchronous instruction or an asynchronous instruction, the data transfer is controlled to be achieved according to data transfer control information held in the unit associated with the instruction. The content of the unit is updated depending on the amount of data to be transferred. When a request of a data transfer is made by a synchronous instruction during a data transfer caused by an asynchronous instruction, the data transfer of the asynchronous instruction is interrupted to control the data transfer of the synchronous instruction to be executed. When the data transfer is completed, based on the content of the unit to hold data transfer control information of the asynchronous instruction, the data transfer of the asynchronous instruction interrupted is resumed.
摘要翻译：一种用于控制具有主存储器，扩展存储器和处理器的信息处理系统中的存储器之间的数据传输的装置，其中通过使用同步指令和异步指令在主存储器和扩展存储器之间传送数据。该装置包括用于保存由异步指令指定的数据传送控制信息的单元和用于保持由同步指令指定的数据传送控制信息的单元。根据同步指令或异步指令，根据与指令相关联的单元中保存的数据传输控制信息，控制数据传输。根据要传送的数据量更新本机的内容。当在由异步指令引起的数据传送期间通过同步指令进行数据传送的请求时，异步指令的数据传送被中断，以控制要执行的同步指令的数据传送。当数据传输完成时，基于保存异步指令的数据传输控制信息的单元的内容，恢复中断的异步指令的数据传输。

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