Fail soft memory

Details Fail soft memory Fail soft memory

G - Physics

06

F

354/224, 354/239

G06F 9/22 (2006.01) G06F 11/22 (2006.01) G11C 29/00 (2006.01)

Patent

CA 1059638

ABSTRACT OF THE DISCLOSURE A firmware/hardware mechanism in a general purpose computer system automatically provides alternate addressing paths for addressing data in the same or another main memory module when a failure is detected in a portion of the main memory or main memory module. Two types of memory failures are detected and an alternate path provided for each type of failure. The first type is a failure in a memory which is not detected by memory hardware or system interface unit SIU hardware; such failure is handled by an exception processing mechanism to provide an alternate path to a good memory module. The second type of failure is detected by memory hardware or system interface unit SIU hardware; such failure is handled by an interrupt processing mechanism to provide an alternate path to a good memory module. -1-

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