公开(公告)号：US4788638A

公开(公告)日：1988-11-29

申请号：US940621

申请日：1986-12-11

申请人： Tetsuji Ogawa ,  Tadashi Sato ,  Kazuhiko Ninomiya ,  Hideaki Shibata ,  Ryo Yamagatu

发明人： Tetsuji Ogawa ,  Tadashi Sato ,  Kazuhiko Ninomiya ,  Hideaki Shibata ,  Ryo Yamagatu

IPC分类号： G06F3/06 ,  G06F13/12 ,  G06F3/00

CPC分类号： G06F13/122

摘要： An apparatus transfers data between a plurality of input/output (I/O) devices and a main storage unit and includes a plurality of channel devices and a channel control unit. Each channel device is provided with a first data buffer for holding data to be transferred to and transferred from an I/O device. The channel control unit has an address register and a second data buffer. An address register is provided for each channel device, and holds an address of the main storage unit at which address the data to and from the I/O device is stored, and the second data buffer holds the data to be transferred to and transferred from the I/O device, which data is accessed based on the address designated by the address register. A data bus is connected between the first and second data buffers, the data bus having a bit capacity larger than that for data transfer between the I/O device and the channel device.

摘要翻译： 设备在多个输入/输出（I / O）设备和主存储单元之间传送数据，并且包括多个信道设备和信道控制单元。 每个通道设备设置有用于保持要传送到I / O设备并从I / O设备传送的数据的第一数据缓冲器。 信道控制单元具有地址寄存器和第二数据缓冲器。 为每个通道设备提供地址寄存器，并且保存存储来自I / O设备的数据的主存储单元的地址，并且第二数据缓冲器保存要传送和传送的数据 该I / O设备根据由地址寄存器指定的地址访问数据。 数据总线连接在第一和第二数据缓冲器之间，数据总线的位容量大于I / O设备和通道设备之间的数据传输。