Read Only Store Patch
Original Publication Date: 1981-Jun-01
Included in the Prior Art Database: 2005-Feb-11
In a modular read-only store (ROS) configuration, as shown in Fig. 1, all ROS information is accessed via a branch vector table (BVT). This BVT contains the addresses of all entries to the ROS information, such as micro-code routines. In the illustrated configuration, ROS module A contains the BVT and part of the micro-code.