Advanced Configuration and Power Interface Specification

ACPI Source Language (ASL)Reference
However, only one operator currently supports UTF-8 strings: Unicode. Since string literals are
defined to contain only non-null character values, both Hex and Octal escape sequence values must
be non-null values in the ASCII range 0x01 through 0xFF. For arbitrary byte data (outside the range
of ASCII values), the Buffer object should be used instead.
Since the backslash is used as the escape character and also the namespace root prefix, any string
literals that are to contain a fully qualified namepath from the root of the namespace must use the
double backslash to indicate this:
Name (_EJD, ”\\_SB.PCI0.DOCK1”)
The double backslash is only required within quoted string literals.
Since double quotation marks are used close a string, a special escape sequence (\") is used to allow
quotation marks within strings. Other escape sequences are listed in the table below:
Table 19-353 ASL Escape Sequences
Escape Sequence
ASCII Character
\a 0x07 (BEL)
\b 0x08 (BS)
\f 0x0C (FF)
\n 0x0A (LF)
\r 0x0D (CR)
\t 0x09 (TAB)
\v 0x0B (VT)
\" 0x22 (")
\'
0x27 (')
\\ 0x5C (\)
Since literal strings are read-only constants, the following ASL statement (for example) is not
supported:
Store (“ABC”, ”DEF”)
However, the following sequence of statements is supported:
Name (STR, ”DEF”)
...
Store (“ABC”, STR)
19.3.3 ASL Resource Templates
ASL includes some macros for creating resource descriptors. The ResourceTemplate macro creates a
Buffer in which resource descriptor macros can be listed. The ResourceTemplate macro
automatically generates an End descriptor and calculates the checksum for the resource template.
The format for the ResourceTemplate macro is as follows:
Version 6.0 787