Checkpoint logging without checkpoint display device availability

摘要: A processor register is reserved by early firmware code to be employed for checkpoint logging or storing diagnostic information at the time of failure before a display device, usually contained within an I/O subsystem, initialized. Early codes are written in assembly language and present invention dedicates information. If machine fails any checkpoint, point failure, displayed dedicated has logged The error relating obtained from through JTAG (Joint Task Action Group) scanning utilizing debugging tool.