On-Site ROS Patch Mechanism
Original Publication Date: 1987-Oct-01
Included in the Prior Art Database: 2005-Feb-02
This article describes the patch mechanism on the microcode stores in ROS (read-only storage) of the machine to fix the microcode problem promptly, at the customer's location in the subsystem which has the down-load capability from the controller/file-server to the machine and the up-store capability from the machine to the controller/file-server. As shown in Fig. 1, the On-Site ROS Patch Utility is used in the machine to perform the On-Site ROS Patch Mechanism, and the CE (Customer Engineer) can fix the field problem on the microcode at the customer's location. The field incident is reported to the microcode maintenance department, the cause is analyzed, and then the resolution is tested.