Atmel CAVR-4 Manual De Usuario

CAVR-4

Part 2. Compiler reference

FAR_HEAP

Holds the heap used for dynamically allocated data in far memory when using the DLIB 
library.

DATA

Data. The address range is 

0x0–0xFFFFFF

.

This segment holds dynamically allocated data in far memory, in other words data used 
by 

far_malloc

 and 

far_free

, and in C++, 

new

 and 

delete

.

This segment and its length is normally defined in the linker command file by the 
command:

-Z(DATA)FAR_HEAP+nn=start

where 

 is the length and 

 is the location.

For more information about dynamically allocated data and the heap, see The return 
address stack, page 43. For information about using the 

new

 and 

delete

 operators for 

a heap in far memory, see New and Delete operators, page 114.

FAR_I

Holds non-zero initialized static and global 

_ _far

 variables.

DATA

Data. The address range is 

0x0–0xFFFFFF

.

Holds static and global 

_ _far

 variables that have been defined with non-zero initial 

values.

When the 

-y

 compiler option is used, 

_ _far

 constant data is located in this segment.