公开(公告)号：DE3271388D1

公开(公告)日：1986-07-03

申请号：DE3271388

申请日：1982-09-16

Applicant: IBM

Inventor： GRICE DONALD GEORGE ,  HOWLEY FRANK EDWARD

IPC: G06F13/374 ,  G06F13/36

Abstract: A multiple user shared bus contention resolution facility permits processing elements (PE's) to communicate with other PE's entirely under the control of each PE without a separate bus controller. Each PE has means for broadcasting its priority code on a contention portion of the bus and for sampling the bus after a delay in which it has received the codes from other PE's. Each PE holds its priority code on the bus for a further delay during which other PE's can sample the priority code. The PE's resolve contention for access to the information portion of the bus in a multi stage contention sequence. System usage, made possible by peer-to-peer distribution of bus access control, includes dynamic driven priority schemes, a variety of operating modes and hence flexible multiplexing of message traffic.

公开(公告)号：MX153861A

公开(公告)日：1987-01-26

申请号：MX19503282

申请日：1982-11-03

Applicant: IBM

Inventor： GRICE DONALD GEORGE ,  HOWLEY FRANK EDWARD

IPC: G06F13/374 ,  G06F9/46

Abstract: A multiple user shared bus contention resolution facility permits processing elements (PE's) to communicate with other PE's entirely under the control of each PE without a separate bus controller. Each PE has means for broadcasting its priority code on a contention portion of the bus and for sampling the bus after a delay in which it has received the codes from other PE's. Each PE holds its priority code on the bus for a further delay during which other PE's can sample the priority code. The PE's resolve contention for access to the information portion of the bus in a multi stage contention sequence. System usage, made possible by peer-to-peer distribution of bus access control, includes dynamic driven priority schemes, a variety of operating modes and hence flexible multiplexing of message traffic.