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Altera_Forum
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15 years ago

Questions on program size in Nios II

Hi! I'm learning Nios II with DE2 Development Board, and I made a very simple MCU in the SOPC Builder which contains a Nios II processor(standard) with reset vector = epcs_controller and exception...
Altera_Forum's avatar
Altera_Forum
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15 years ago

A few things to remember.

1 - Your Atmel AVR was most likely an 8-bit MCU. NIOS is 32-bit.

2 - There is a lot you can do to reduce the code footprint on NIOS. For example; rather than running your little application, try starting with the "Hello World Small" example application and go from there. I frequently write very rich little applications in around 16K of code.

In addition, read the section entitled "Reducing Code Footprint" beginning on page 6-30 of the NIOS II Software Developers Handbook:

http://www.altera.com/literature/hb/nios2/n2sw_nii52004.pdf

Jake