公开(公告)号：JP2002278921A

公开(公告)日：2002-09-27

申请号：JP2002074116

申请日：2002-03-18

Applicant: IBM

Inventor： BEAMAN DANIEL PAUL ,  CARPENTER GARY D ,  MARK EDWARD DEAN ,  VOIGT WENDEL GLENN

IPC: G06F13/36 ,  G06F13/362 ,  G06F13/40

Abstract: PROBLEM TO BE SOLVED: To provide a method and a system for arbitrating bus control between a first bus master having a two-way handshake bus acquirement protocol and a second bus master having a one-way bus acquirement protocol. SOLUTION: The method and system for arbitrating the two bus masters having the two different bus acquirement protocols are provided. The control of a bus is taken up from the first bus master in response to the output of a bus request by the second bus master when the first bus master controls the bus. When an arbitration controller transmits a signal for ordering the first bus master to terminate a bus transaction, the control of the bus is given to the second bus master. When the second bus master terminates the bus request, the control of the bus is given to the first bus master and a signal for confirming the permission of control is transmitted from the arbitration controller to the first bus master.