Browse Prior Art Database

Card Testing in Target System

IP.com Disclosure Number: IPCOM000057805D
Original Publication Date: 1988-Jul-01
Included in the Prior Art Database: 2005-Feb-15

Publishing Venue

IBM

Related People

Authors:
Brown, DJ Harrison, RB Martin, SJ Norris, PW [+details]

Abstract

Logic cards are often tested by running each at full speed attached to their target system and executing diagnostic software. A problem is that a faulty card can cause the system to stop and so produce no diagnostics for card repair. When this condition occurs, the card is disconnected from the target system by timing logic and the state of (Image Omitted) the interconnecting bus recorded. Also disclosed is a test adapter which is placed between the card under test (CUT) and the target system which allows preliminary testing of the card inputs and outputs before the card is connected to the system bus. By placing the adapter shown in Fig.