problem printf with de2 basic board

The DE2 board has external memory on it. You can use the 512 kbyte SRAM and the 8 Mbyte SDRAM. There are several examples for using each of these chips on the CD. You may need to download the latest CD from Terasic because it has QSYS examples as well as the obsolete SOPC builder. Make sure your program is compiled to load into SRAM/SDRAM.

Hi Galfonz,

You can find out how big an executable file is by creating a simple hello world program and then using the nios2-elf-size program on it from the Nios II EDS command shell. That will give you the approximate size of the runtime needed to support printf.

I've tried with the SDRAM (8MBytes), I had no error until I start the Nios II program which said "Downloading ELF Process failed". So I've decided to see how much size the .elf file takes (right click on the .elf then properties) and I have "Size : 432 148 bytes". I do a simple printf("Hello Wolrd !");

Start with an example that uses SDRAM. Make sure the configuration file built by terasic works. This tells you your hardware is OK.

Okay I'll try this. The Terasic SDRAM program works so I do something wrong. I've found another solution using only the on-chip memory. In Nios II right click on the bsp folder then properties and under Nios II BSP Properties check the reduced device drivers box and the small C library box then apply and run and in my case that works.