Advanced Configuration and Power Interface Specification

ACPI Source Language (ASL)Reference
IndexField (IDX0, DAT0, ByteAcc, NoLock, Preserve) {
FET0, 1,
FET1, 1,
Offset (0x2f), // skip to byte offset 2f
, 7, // skip another 7 bits
FET3, 1,
FET4, 1
}
// Clear FET3 (index 2F, bit 7)
Store (Zero, FET3)
} // End EX1
19.6.62 Interrupt (Interrupt Resource Descriptor Macro)
Syntax
Interrupt (ResourceUsage, EdgeLevel, ActiveLevel, Shared, ResourceSourceIndex,
ResourceSource, DescriptorName) {InterruptList} => Buffer
Arguments
ResourceUsage describes whether the device consumes the specified interrupt
(ResourceConsumer) or produces it for use by a child device (ResourceProducer). If nothing is
specified, then ResourceConsumer is assumed.
EdgeLevel describes whether the interrupt is edge triggered (Edge) or level triggered (Level). The
field DescriptorName. _HE is automatically created to refer to this portion of the resource
descriptor, where ‘1’ is Edge and ‘0’ is Level.
ActiveLevel describes whether the interrupt is active-high (ActiveHigh) or active-low (ActiveLow).
The field DescriptorName. _LL is automatically created to refer to this portion of the resource
descriptor, where ‘1’ is ActiveHigh and ‘0’ is ActiveLow.
Shared describes whether the interrupt can be shared with other devices (Shared) or not
(Exclusive), and whether it is capable of waking the system from a low-power idle or system sleep
state (SharedAndWake or ExclusiveAndWake). The field DescriptorName. _SHR is
automatically created to refer to this portion of the resource descriptor, where ‘1’ is Shared and ‘0’ is
Exclusive. If nothing is specified, then Exclusive is assumed.
ResourceSourceIndex evaluates to an integer between 0x00 and 0xFF and describes the resource
source index. If it is not specified, then it is not generated. If this argument is specified, the
ResourceSource argument must also be specified.
ResourceSource evaluates to a string which uniquely identifies the resource source. If it is not
specified, it is not generated. If this argument is specified, but the ResourceSourceIndex argument is
not specified, a zero value is assumed.
DescriptorName evaluates to a name string which refers to the entire resource descriptor.
InterruptList is a comma-delimited list on integers, at least one value is required. Each integer
represents a 32-bit interrupt number. At least one interrupt must be defined, and there may be no
duplicates in the list. The field “DescriptorName. _INT” is automatically created to refer to this
portion of the resource descriptor.
Version 6.0 851