Atmel CAVR-4 Manual De Usuario

CAVR-4

Descriptions of extended keywords

Reference Guide

The following table summarizes the extended keywords that can be used on data:

The following sections give detailed information about each extended keyword.

@

The 

@

 operator can be used for placing global and static variables at absolute addresses. 

The syntax can also be used for placing variables and functions in named segments.

For more information about the 

@

 operator, see Efficient usage of segments and memory, 

@

Controls the storage of data objects and functions

_ _eeprom

Controls the storage of data objects in code memory space

_ _ext_io

Controls the storage of data objects in I/O memory space

Supports I/O instructions; used for SFRs

_ _far

Controls the storage of data objects in data memory space

_ _farflash

Controls the storage of data objects in code memory space

_ _flash

Controls the storage of data objects in code memory space

_ _generic

Declares a generic pointer

_ _huge

Controls the storage of data objects in data memory space

_ _hugeflash

Controls the storage of data objects in code memory space

_ _io

Controls the storage of data objects in I/O memory space

Supports I/O instructions; used for SFRs

_ _near

Controls the storage of data objects in data memory space

_ _no_init

Supports non-volatile memory

_ _regvar

Places a data object in a register

_ _root

Ensures that a function or data object is included in the object code 

even if unused

_ _tiny

Controls the storage of data objects in data memory space

_ _tinyflash

Controls the storage of data objects in code memory space