SDRAM problem in SOPC builder

Michel,

the size of your SDRAM should not be a problem. I doubled the SDRAM in my SOPC from 64Mx32 to 128Mx32 and I didn't receiver any SOPC builder errors (see attached JPGs).

Did you typed in a correct memory profile and timing parameters for the SDRAM in SOPC builder?

You could refer the DE2-115 System Builder which is able to generate a Quartus project.

In your code the memory allocation for SDRAM is not complete. You should use:

buffer = ( alt_u32* )malloc( SDRAM_MAX_WORDS * sizeof(alt_u32))

Jens