Advanced Configuration and Power Interface Specification

Advanced Configuration and Power Interface Specification
Arguments
Minuend is evaluated as an Integer.
Description
This operation decrements the Minuend by one and the result is stored back to Minuend. Equivalent
to Subtract (Minuend, 1, Minuend). Underflow conditions are ignored and the result is Ones.
19.6.27 Default (Default Execution Path in Switch)
Syntax
Default {TermList}
Arguments
TermList is a sequence of executable ASL expressions.
Description
Within the body of a Switch (page 889) statement, the statements specified by TermList will be
executed if no Case (page 814) statement value matches the Switch statement value. If Default is
omitted and no Case match is found, none of the statements in the Switch body are executed. There
can be at most one Default statement in the immediate scope of the parent Switch statement. The
Default statement can appear anywhere in the body of the Switch statement.
19.6.28 DefinitionBlock (Declare Definition Block)
Syntax
DefinitionBlock (AMLFileName, TableSignature, ComplianceRevision, OEMID, TableID,
OEMRevision) {TermList}
Arguments
AMLFileName is a string that specifies the desired name of the translated output AML file.
TableSignature is a string that contains the 4-character ACPI signature. ComplianceRevision is an 8-
bit value. OEMID is a 6-character string, TableId is an 8-character string, and OEMRevision is a 32-
bit value. TermList is a sequence of executable ASL expressions.
Description
The DefinitionBlock term specifies the unit of data and/or AML code that the OS will load as part of
the Differentiated Definition Block or as part of an additional Definition Block.
This unit of data and/or AML code describes either the base system or some large extension (such as
a docking station). The entire DefinitionBlock will be loaded and compiled by the OS as a single
unit, and can be unloaded by the OS as a single unit.
Note: For compatibility with ACPI versions before ACPI 2.0, the bit width of Integer objects is
dependent on the ComplianceRevision of the DSDT. If the ComplianceRevision is less than 2, all
integers are restricted to 32 bits. Otherwise, full 64-bit integers are used. The version of the DSDT
sets the global integer width for all integers, including integers in SSDTs.
820 April, 2015 Version 6.0