IBM xSeries 380, Hardware Maintenance Manual

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Diagnostics
83
Aborting the memory test
Users are given the option to abort the memory test by pressing the spacebar. The
following string will appear on the bottom of the screen when executing the extended
memory test:
Press spacebar to abort memory test.
However, this method will only work for the extended memory test. It will not work
for the first row or base memory tests. The total amount of memory installed in the
system will still be reported on the video screen.
Setup dialog
The BIOS setup (F2) menu has the following selections:
->Advanced->Chipset Configuration->Memory Related Items:
The test interval entries determine how much of the target memory is tested. The
default in all cases is 4 cache line per 16 MB (fastest mode). In the alternate mode,
each cache line is tested.
The ’Defective DIMM Mapout’ is used to turn off mapout completely. If this is
disabled, defective DIMMs will be detected, but not mapped out on the next BOOT.
The ’Clear Bad Memory Row Info’ is used to clear the history, and retest all memory.
This option is used when defective memory has been replaced, and the user wishes to
place it in service again. This option automatically goes back to ’disabled’ after the
next boot.
Name Selection Comments
System ECC Enabled Default
Disabled
First Row Test Interval 4 cache line per 16 MB Default
Every location
Base Memory Test Interval 4 cache line per 16 MB Default
Every location
Extended Memory Test Interval 4 cache line per 16 MB Default
Every location
Defective DIMM Mapout Enabled Default – Enables map out
Disabled Disables map out
Clear Bad Memory Row Info Disabled Default – Don't clear history
Enabled Clear history