Advanced Configuration and Power Interface Specification

ACPI Source Language (ASL)Reference
Arguments
Creates a new region named RegionName. SignatureString, OemIDString and OemTableIDString
are evaluated as strings.
Description
A Data Table Region is a special Operation Region whose RegionSpace is SystemMemory . Any
table referenced by a Data Table Region must be in memory marked by AddressRangeReserved or
AddressRangeNVS.
The memory referred to by the Data Table Region is the memory that is occupied by the table
referenced in XSDT that is identified by SignatureString, OemIDString and OemTableIDString.
Any Field object can reference RegionName
The base address of a Data Table region is the address of the first byte of the header of the table
identified by SignatureString, OemIDString and OemTableIDString. The length of the region is the
length of the table.
19.6.25 Debug (Debugger Output)
Syntax
Debug
Description
The debug data object is a virtual data object. Writes to this object provide debugging information.
On at least debug versions of the interpreter, any writes into this object are appropriately displayed
on the system’s native kernel debugger. All writes to the debug object are otherwise benign. If the
system is in use without a kernel debugger, then writes to the debug object are ignored. The
following table relates the ASL term types that can be written to the Debug object to the format of
the information on the kernel debugger display.
Table 19-366 Debug Object Display Formats
ASL Term Type
Numeric data object
String data object
Object reference
Display Format
All digits displayed in hexadecimal format.
String is displayed.
Information about the object is displayed (for example, object type and object
name), but the object is not evaluated.
The Debug object is a write-only object; attempting to read from the debug object is not supported.
19.6.26 Decrement (Integer Decrement)
Syntax
Decrement (Minuend) => Integer
Minuend-- => Integer
Version 6.0 819