Advanced Configuration and Power Interface Specification

ACPI Software Programming Model
(1)
Method (DEAD,) {
Scope (\_SB_.FOO) {
Name (BAR,) // Run time definition
}
}
(2)
Scope (\_SB_) {
Name (\_SB_. FOO.BAR,) // Load time definition
}
Notice that in the above example the execution of the DEAD method will always fail because the
object \_SB_.FOO.BAR is created at load time.
5.5 Using the ACPI Control Method Source Language
OEMs and BIOS vendors write definition blocks using the ACPI Control Method Source language
(ASL) and use a translator to produce the byte stream encoding described in Section 5.4, “Definition
Block Encoding”. For example, the ASL statements that produce the example byte stream shown in
that earlier section are shown in the following ASL example. For a full specification of the ASL
statements, see Section 19, “ACPI Source Language (ASL) Reference.”
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