[avr-libc-dev] malloc() explained

[Joerg Wunsch]

Since i just stumpled across an application not working anymore with
external RAM by just adding -Wl,-Tdata=0x801100, and found out that
__heap_end needs to be adjusted as well when using malloc(), i decided
it's time to write something up about malloc(), it's implementation
details, and the special issues for dynamic memory in a microcontroller
environment.

Please review.
-- 
J"org Wunsch                                           Unix support engineer
address@hidden        http://www.interface-systems.de/~j/