Inventors:
Gregory B. Wiedenman - Woodbury MN, US
Nathan A. Eckel - Fridley MN, US
Mary C. Roskowiak - Eagan MN, US
Assignee:
Unisys Corporation - Blue Bell PA
International Classification:
G06F 13/00
Abstract:
A method and apparatus to facilitate a history trace of system bus activity in a Symmetric Multi-Processor (SMP) environment. A dynamic scan capability is provided to User () via Computer () that allows dynamic configuration of History Control Register (), thus providing a maskable history stack of system bus activity to be obtained from History Memory () for subsequent analysis.