公开(公告)号：DE3463980D1

公开(公告)日：1987-07-02

申请号：DE3463980

申请日：1984-06-20

Applicant: IBM

Inventor： NORGREN KENT STEVEN ,  VOGELSBERG ROBERT ERIC

IPC: G06F13/37 ,  G06F13/36

Abstract: Independent asynchronous bus master devices share a common bus with control lines serially connecting each bus master in a daisy-chain configuration. A Bus Acknowledge signal (34) is received by a local bus master which is thereby enabled (31, 33) to seize control of the bus without an input synchronization delay by first inhibiting (signal 40) synchronization means (41, 41 A, 42, 43) to prevent the passage of the Bus Acknowledge signal (34) to a downstream device for a period of time sufficient to stabilize a Bus Acknowledge Pass signal (44) indicating such passage. In that manner, the Bus Acknowledge signal (44) may be used to control the immediate enabling of local bus seizure thereby avoiding local synchronization delay.

公开(公告)号：DE3176857D1

公开(公告)日：1988-09-29

申请号：DE3176857

申请日：1981-10-29

Applicant: IBM

Inventor： NORGREN KENT STEVEN ,  VOGELSBERG ROBERT ERIC ,  BUSHAW KENNETH ALLEN ,  WOODWARD MILTON HOLLOWAY ,  RACKLEY DARWIN PRESTON

IPC: G06F12/02 ,  G06F13/12 ,  G06F13/18