Product Fault Management,
Continued
In the next example, 5ffb8 (under the page frame number [PFN]
column) is identified as the single page that has been replaced.
The command EVAL 5ffb8 * 200 converts the PFN to a physical
page address. The result is 0bff7000. (Bits <8:0> of the addresses
may differ since the page address from EVAL always shows bits
<8:0> as 0.
$ ANALYZE/SYSTEM
VAX/VMS System analyzer
SDA> SHOW PFN /BAD
Bad page list
-------------
Count:
1
Lolimit:
-1
High limit:
1073741824
PFN
PTE
BAK
REFCNT FLINK
BLINK
TYPE
STATE
ADDRESS
----
--------- -------- ------ -----
-----
---------- ------
0005FFB8 00000000
00000000
0
00000000 00000000 20 PROCESS 02
BADLIST
SDA> EVAL 5ffb8 * 200
Hex = 0BFF7000
Decimal = 201289728
SDA> EXIT
$
Correctable
ECC Errors
For correctable ECC errors, a single-bit error (SBE) memory
subpacket is logged as indicated by memory SBE reduction
subpacket listed in the third column of the FLAGS software
register.
The memory SBE reduction subpacket header contains a
CURRENT ENTRY register that displays the number of the
Memory CRD Entry that caused the error notification. If
CURRENT ENTRY > 0, examine which bits are set in the
STATUS register for this entry. GENERATE REPORT should
be set.
NOTE
If CURRENT ENTRY = 0, then the entry was logged for
something other than a single-bit memory correctable
error Footprint. You need to examine all of the memory
CRD entries and footprints to determine the likely FRU.
Continued on next page
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