Advanced Configuration and Power Interface Specification

ACPI Source Language (ASL)Reference
Description
If Destination is already an initialized object of type DataRefObject, the original contents of
Destination are discarded and replaced with Source. Otherwise, a fatal error is generated.
Note: (Compatibility Note) The CopyObject operator was first introduced new in ACPI 2.0.
19.6.18 CreateBitField (Create 1-Bit Buffer Field)
Syntax
CreateBitField (SourceBuffer, BitIndex, BitFieldName)
Arguments
SourceBuffer is evaluated as a buffer. BitIndex is evaluated as an integer. BitFieldName is a
NameString.
Description
A new buffer field object named BitFieldName is created for the bit of SourceBuffer at the bit index
of BitIndex. The bit-defined field within SourceBuffer must exist.BitFieldName is created for the bit
of SourceBuffer at the bit index of BitIndex. The bit-defined field within SourceBuffer must exist.
19.6.19 CreateByteField (Create 8-Bit Buffer Field)
Syntax
CreateByteField (SourceBuffer, ByteIndex, ByteFieldName)
Arguments
SourceBuffer is evaluated as a buffer. ByteIndex is evaluated as an integer. ByteFieldName is a
NameString.
Description
A new buffer field object named ByteFieldName is created for the byte of SourceBuffer at the byte
index of ByteIndex. The byte-defined field within SourceBuffer must exist.
19.6.20 CreateDWordField (Create 32-Bit Buffer Field)
Syntax
CreateDWordField (SourceBuffer, ByteIndex, DWordFieldName)
Arguments
SourceBuffer is evaluated as a buffer. ByteIndex is evaluated as an integer. DWordFieldName is a
NameString.
Description
A new buffer field object named DWordFieldName is created for the DWord of SourceBuffer at the
byte index of ByteIndex. The DWord-defined field within SourceBuffer must exist.
Version 6.0 817