IBM xSeries 380 Hardware Maintenance Manual page 124

Memory array — use:
Note: Enumerated values are controlled by the DMTF, not this specification.
Byte value
01h
02h
03h
04h
05h
06h
07h
Memory array — error correction types:
Note: Enumerated values are controlled by the DMTF, not this specification.
Byte value
01h
02h
03h
04h
05h
06h
07h
SMBIOS memory device (type 17): SMBIOS memory device (type 17) is included
here for reference.
Spec
Offset
Version
00h 2.1+ Type
01h 2.1+ Length
02h 2.1+ Handle
04h 2.1+ Memory Array
Handle
06h 2.1+ Memory Error
Information
Handle
08h 2.1+ Total Width
0Ah 2.1+ Data Width
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Hardware Maintenance Manual: xSer ies 380
Meaning
Other
Unknown
System memory
Video memory
Flash memory
Non-volatile RAM
Cache memory
Meaning
Other
Unknown
None
Parity
Single-bit ECC
Multi-bit ECC
CRC
Name Length Value
BYTE 17
BYTE Varies
WORD Varies
WORD Varies
WORD Varies
WORD Varies
WORD Varies
Description
Memory Array type.
Length of the structure, a minimum of 15h.
The handle, or instance number, associated with the
structure.
The handle, or instance number, associated with the
Memory Array to which this device belongs.
The handle, or instance number, associated with any error
that was previously detected for the device. If the system
does not provide the error information structure, the field
contains FFFEh; otherwise, the field contains either FFFFh
(if no error was detected) or the handle of the error-
information structure. See System Management BIOS
Reference Specification, v2.3.1.
The total width, in bits, of this memory device, including
any check or error-correction bits. If there are no error-
correction bits, this value should be equal to Data Width.
If the width is unknown, the field is set to FFFFh.
The data width, in bits, of this memory device. A data
width of 0 and a total width of 8 indicates that the device
is being used solely to provide 8 error-correction bits. If
the width is unknown, the field is set to FFFFh.