Advanced Configuration and Power Interface Specification

ACPI Source Language (ASL)Reference
// Create BLVL & BAC in bank 1 at the same offset
BankField (GIO0, BNK1, 1, ByteAcc, NoLock, Preserve) {
Offset (0x30),
BLVL, 7,
BAC, 1
}
19.6.8 Break (Break from While)
Syntax
Break
Description
Break causes execution to continue immediately following the innermost enclosing While or
Switch scope, in the current Method. If there is no enclosing While or Switch within the current
Method, a fatal error is generated.
Compatibility Note: In ACPI 1.0, the Break operator continued immediately following the
innermost “code package.” Starting in ACPI 2.0, the Break operator was changed to exit the
innermost “While” or “Switch” package. This should have no impact on existing code, since the
ACPI 1.0 definition was, in practice, useless.
19.6.9 BreakPoint (Execution Break Point)
Syntax
BreakPoint
Description
Used for debugging, the Breakpoint opcode stops the execution and enters the AML debugger. In
the non-debug version of the AML interpreter, BreakPoint is equivalent to Noop.
19.6.10 Buffer (Declare Buffer Object)
Syntax
Buffer (BufferSize) {String or ByteList} => Buffer
Arguments
Declares a Buffer of size BufferSize and optional initial value of String or ByteList.
Description
The optional BufferSize parameter specifies the size of the buffer and the initial value is specified in
Initializer ByteList. If BufferSize is not specified, it defaults to the size of initializer. If the count is
too small to hold the value specified by initializer, the initializer size is used. For example, all four of
the following examples generate the same data in namespace, although they have different ASL
encodings:
Version 6.0 813