Functional Verification of the Disc File Attachment Using a Microprocessor
Original Publication Date: 1978-Aug-01
Included in the Prior Art Database: 2005-Feb-21
On-line fault detection and isolation is difficult to achieve on a complex file attachment card, such as that used with a disc file. The extensive hardware and microcode diagnostics described here help to solve this problem. Self diagnostic testing is provided with electrical isolation from interface cable faults, and background diagnostics are used to enhance reliability.