公开(公告)号：JP2002182803A

公开(公告)日：2002-06-28

申请号：JP2001301550

申请日：2001-09-28

Applicant: IBM

Inventor： BROCK BISHOP C ,  CARPENTER GARY D ,  NOWKA KEVIN J

IPC: G06F1/30 ,  G06F1/00 ,  G06F1/24 ,  G06F11/00 ,  G06F12/16 ,  G06F13/24

Abstract: PROBLEM TO BE SOLVED: To provide a resumption function of a computer system after an integrated circuit in the battery type computer system is disconnected completely in a method and a device for keeping the state of a computer system component. SOLUTION: The state is read by using a scanning latch in the computer system component. A scanning register can be accessed internally through internal scan chaining or externally by using a serial test port interface or a boundary scan interface. Next, the state is stored in a nonvolatile storage area, and the power is disconnected from the computer system component.