ENGINEERING Change Release and DIAGNOSTIC Change Procedure for Technician Terminal
Original Publication Date: 1987-Aug-01
Included in the Prior Art Database: 2005-Feb-01
This article describes a method to effect an engineering change (EC) release and a diagnostic change for a technician terminal. The assembly line diagnostic link (ALDL) and probe attachment cards within a technician terminal have erasable programmable read-only memories (EPROMs) that are subject to change and the EC files must match the EPROMs. The EC files are downloaded during initialization time and the attachment ID's and EC version number are checked. If the EPROMs and the EC file do not match the attachment ID number or they have different EC version levels, the operation is terminated. This could happen when a card with a different EPROM version is installed or switched with another card from another machine of a different EC level.