Advanced Configuration and Power Interface Specification

Advanced Configuration and Power Interface Specification
AddressMaximum evaluates to a 16-bit integer that specifies the highest possible bus number for the
bus number range. The value must have ‘0’ in all bits where the corresponding bit in
AddressGranularity is ‘1’. For bridge devices which translate addresses, this is the address on the
secondary bus. The 16-bit field DescriptorName._MAX is automatically created to refer to this
portion of the resource descriptor.
AddressTranslation evaluates to a 16-bit integer that specifies the offset to be added to a secondary
bus bus number which results in the corresponding primary bus bus number. For all non-bridge
devices or bridges which do not perform translation, this must be ‘0’. The 16-bit field
DescriptorName._TRA is automatically created to refer to this portion of the resource descriptor.
RangeLength evaluates to a 16-bit integer that specifies the total number of bus numbers decoded in
the bus number range. The 16-bit field DescriptorName. _LEN is automatically created to refer to
this portion of the resource descriptor.
ResourceSourceIndex is an optional argument which evaluates to an 8-bit integer that specifies the
resource descriptor within the object specified by ResourceSource. If this argument is specified, the
ResourceSource argument must also be specified.
ResourceSource is an optional argument which evaluates to a string containing the path of a device
which produces the pool of resources from which this I/O range is allocated. If this argument is
specified, but the ResourceSourceIndex argument is not specified, a zero value is assumed.
DescriptorName is an optional argument that specifies a name for an integer constant that will be
created in the current scope that contains the offset of this resource descriptor within the current
resource template buffer. The predefined descriptor field names may be appended to this name to
access individual fields within the descriptor via the Buffer Field operators.
Description
The WordSpace macro evaluates to a buffer which contains a 16-bit Address Space resource
descriptor. The format of the 16-bit Address Space resource descriptor can be found in “Word
Address Space Descriptor ” (page 327). The macro is designed to be used inside of a
ResourceTemplate (page 794).
19.5.144 XOr (Integer Bitwise Xor)
Syntax
XOr (Source1, Source2, Result) => Integer
Arguments
Source1 and Source2 are evaluated as Integers.
Description
A bitwise XOR is performed and the result is optionally stored into Result.
19.5.145 Zero (Constant Zero Integer)
Syntax
Zero => Integer
Hewlett-Packard/Intel/Microsoft/Phoenix/Toshiba 815