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Signature Analysis Testing of On Card ROS

IP.com Disclosure Number: IPCOM000045168D
Original Publication Date: 1983-Feb-01
Included in the Prior Art Database: 2005-Feb-06

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Davis, GT Thomas, RW Weaver, JM Wulf, JC [+details]


This article describes a technique for providing a signature analysis test of on-card ROS (read-only storage) by first degating the ROS to permit the on-card microprocessor to fetch op codes from a functional test unit and place them at the beginning of RAM (random-access memory) space. The ROS is then enabled and cycled through a signature analysis verification controlled by the op codes stored in RAM.