Specifications

Intel
®
64 and IA-32 Architectures Software Developer’s Manual Documentation Changes 261
Documentation Changes
7. Updates to Chapter 15, Volume 3A
Change bars show changes to Chapter 15 of the Intel
®
64 and IA-32 Architectures Soft-
ware Developer’s Manual, Volume 3A: System Programming Guide, Part 1.
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Table 15-7 lists overwrite rules for uncorrected errors, corrected errors, and
uncorrected recoverable errors.
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Table 15-7 Overwrite Rules for UC, CE, and UCR Errors
First Event Second Event UC PCC S AR MCA Bank Reset System
CE UCR 1 0 0 if UCNA,
else 1
1 if SRAR,
else 0
second yes, if AR=1
UCR CE 1 0 0 if UCNA,
else 1
1 if SRAR,
else 0
first yes, if AR=1
UCNA UCNA 1 0 0 0 first no
UCNA SRAO 1 0 1 0 first no
UCNA SRAR 1 0 1 1 first yes
SRAO UCNA 1 0 1 0 first no
SRAO SRAO 1 0 1 0 first no
SRAO SRAR 1 0 1 1 first yes
SRAR UCNA 1 0 1 1 first yes
SRAR SRAO 1 0 1 1 first yes
SRAR SRAR 1 0 1 1 first yes
UCR UC 1 1 undefined undefined second yes
UC UCR 1 1 undefined undefined first yes