Advanced Configuration and Power Interface Specification

ACPI Source Language (ASL)Reference
Arguments
The EisaIdString must be a String object of the form “UUUNNNN”, where “U” is an uppercase
letter and “N” is a hexadecimal digit. No asterisks or other characters are allowed in the string.
Description
Converts EisaIdString, a 7-character text string argument, into its corresponding 4-byte numeric
EISA ID encoding. It can be used when declaring IDs for devices that have EISA IDs.
Example
EISAID (“PNP0C09”)
// This is a valid invocation of the macro.
19.6.37 Else (Alternate Execution)
Syntax
Else {TermList}
Arguments
TermList is a sequence of executable ASL statements.
Description
If Predicate evaluates to 0 in an If statement, then control is transferred to the Else portion, which
can consist of zero or more ElseIf statements followed by zero or one Else statements. If the
Predicate of any ElseIf statement evaluates to non-zero, the statements in its term list are executed
and then control is transferred past the end of the final Else term. If no Predicate evaluates to nonzero,
then the statements in the Else term list are executed.
Example
The following example checks Local0 to be zero or non-zero. On non-zero, CNT is incremented;
otherwise, CNT is decremented.
If (LGreater (Local0, 5)
{
Increment (CNT)
} Else If (Local0) {
Add (CNT, 5, CNT)
}
Else
{
Decrement (CNT)
}
19.6.38 ElseIf (Alternate/Conditional Execution)
Syntax
ElseIf (Predicate)
Version 6.0 829