公开(公告)号：US4346439A

公开(公告)日：1982-08-24

申请号：US109878

申请日：1980-01-07

申请人： Takakazu Huno ,  Takeyuki Endo ,  Kunihiro Odaka ,  Yasutaka Shibuya

发明人： Takakazu Huno ,  Takeyuki Endo ,  Kunihiro Odaka ,  Yasutaka Shibuya

IPC分类号： G06F13/12 ,  G06F13/28 ,  G09G1/02 ,  G06F3/00

CPC分类号： G06F13/28 ,  G09G1/02

摘要： A data transfer system for use in a data processing system using a direct memory access mode of operation, which is equipped with a processor, a main memory and an input/output device. The data transfer system is characterized in that, when a group of data to be transferred exists in a plurality of areas of continuous addresses of the afore-mentioned memory, a table is provided in the afore-mentioned main memory with identifying information for each group of data indicative of the first address and the number of data items to be transferred from each area of continuous addresses. Only the first address and the number of data items are fed out of the processor to the input/output device by the program control; and in the input/output device, the content of the corresponding table is transferred from the main memory in accordance with the data fed out of the processor so that the direct data transfer may be effected between the main memory and the input/output device in accordance with the transferred table content.

摘要翻译： 一种用于使用直接存储器访问操作模式的数据处理系统中的数据传送系统，其配备有处理器，主存储器和输入/输出设备。 数据传送系统的特征在于，当要传送的一组数据存在于上述存储器的连续地址的多个区域中时，在上述主存储器中提供具有每个组的识别信息的表 指示要从连续地址的每个区域传送的第一地址和数据项的数量的数据。 仅通过程序控制将第一地址和数据项从处理器送出到输入/输出装置; 并且在输入/输出设备中，根据从处理器馈出的数据，相应表的内容从主存储器传送，使得可以在主存储器和输入/输出设备之间进行直接数据传送 按照转让的表格内容。