Multiprocessor Diagnostics; Introduction - AT&T 3B2 Off-Line Diagnostic Manual

Introduction
This chapter contains a description of the diagnostic phases and tests for the Multiprocessor
Enhancement (MPE) card, which is referred to in software as the Multiprocessor Board (MPB). These
phases and tests are applicable to the UNIX System V Release 3.2.2 and subsequent releases.
The following components are found on the System Board (SBD):
• WE 32200 Central Processing Unit (CPU)
• Math Accelerator Unit (MAU)
• Memory Management Unit (MMU)
• Interrupt Structure.
Twenty diagnostic phases run tests on all major board circuits. The Table of Contents listing will
help you locate each phase and its associated tests. The phase and test descriptions are organized
numerically in the same order that the phases are run on the 3B2 computer.
MULTIPROCESSOR DIAGNOSTICS 4-1