malloc function

I’m using GNU for NET+50 development board. I have questions regarding malloc function usage: 1. Where are defined dynamic memory start address (i.e. memory portion used by malloc), and it size. 2. I can’t find this, but this issue should be somewhere in the documentation. Where ?

I am not using GNU compiler but instead a GHS compiler. For GHS, malloc starts to use memory from the heap section (defined in linker file) and this point can be changed in file ind_heap.c