Patent ID: 6865615
Filing Date: 2005-03-08
Classification: G06F

Abstract:
1. A method for configuring a system bus in a data processing system, the method comprising the steps of: detecting an operating mode for each of a plurality of devices connected to the system bus; identifying a most restrictive operating mode from the detected operating modes; and setting a bus configuration mode based on the most restrictive operating mode, wherein setting a bus configuration mode includes setting a switch to one of two states: closed to form a loop configuration and open to disconnect the loop configuration, wherein the plurality of devices are disk drives connected in a daisy chain of disk drives, wherein the operating mode of the plurality of disk drives is one of a Single Ended (SE) bus configuration mode or a Low Voltage Difference (LVD) bus configuration mode, and wherein, if the detected modes include both the SE bus configuration mode and the LVD bus configuration mode, then the most restrictive operating mode is the SE bus configuration mode.