Help: assemble langurage development

[Altera_Forum]

Hi, 

 I want to develop nios ii firmware using assemble langurage. The firmware will run in the onchip_memory. My questions are,  1), how to deside the sp address? 2), how to set the exception address in SOCP?  Thanks,  eRen

[Altera_Forum]

Hi, 

 - the stack grows towards lower memory, so put it at the highest accessible memory location. - setting the exception address can be done in the second tab sheet of the SOPC builder  Stefaan

[Altera_Forum]

eRen, 

 setup of the stack pointer is made in file crt0.s. Copy this file from &#39;<NIOS-Dir>\components\altera_nios2\HAL\src\&#39; to your software directory and make your changes. If the compiler finds this file in your directory it is not searched further.  Mike

[Altera_Forum]

Thanks Mike and Stefaan. 

 eRen