公开(公告)号：FR2354597A1

公开(公告)日：1978-01-06

申请号：FR7713453

申请日：1977-04-26

Applicant: IBM

Inventor： VRBA RICHARD A

IPC: G06F1/04 ,  G06F12/06 ,  G06F13/42 ,  G06F13/00

公开(公告)号：FR2354596A1

公开(公告)日：1978-01-06

申请号：FR7713452

申请日：1977-04-26

Applicant: IBM

Inventor： COCKERILL WILLIAM C ,  HORNUNG LOUIS M ,  JOHNSON DONAVON W ,  VRBA RICHARD A

IPC: G06F13/36 ,  G06F13/28 ,  G06F13/38 ,  G06F13/40 ,  G06F13/00

Abstract: Logic circuitry is provided for controlling the transfer of data between 1) a low cost pipelined processor and its associated memory, 2) between the processor and input/output devices, and 3) between the input/output devices and memory. A plurality of unidirectional busses are provided to interface the processor and memory and a bidirectional buss is provided to interface with the input/output devices. The logic circuitry provides a control function to steer data over the proper buss structures interconnecting the processor, the memory and the input/output devices and provides those interconnections in a manner which allows the processor to overlap input and output functions.