read write from an aonchip memory!!!!

[Altera_Forum]

hello, 

i m a beginner, i try use an onchip memory. i can't perform read and write operation with onchip memory. i can't found an C example that help me access to the memory. i have writen c code: # include "io.h"# include "system.h"# include <stdio.h># include "Data.h"# include "sys/alt_irq.h"   //=============================================================================  int i; int h; int *z; int Acc0k; long cpt_AlleleAccMaster; int cpt_Allele; int cpt_iteration; int Nb_Nucleotides; int *z1; int *k;     void InitDNA()  {   Acc0k = 0;  cpt_Allele = 0;  cpt_AlleleAccMaster = 0;  cpt_iteration = 0;  Nb_Nucleotides = 64;  z1 = (unsigned int*)0x02100000;  for (i=0;i<Nb_Nucleotides;i=i+4)  {  h = (G[i]);  *z1 = h;   z1 = z1 + 1;    }  } int main()  {    InitDNA(); //read (load) data from data.h    k= (unsigned int*)0x02100000;  for(i=0;i<16;i++) { printf("%x\t",*(k+i));// display data }   } can someone help me ? thk for all members

[Altera_Forum]

doe's 0x02100000 address correspond to a on chip memory cell? did you check it at sopc builder? 

 in that case you should declare you pointer as volatile   # define ON_CHIP (*(volatile unsigned int *)0x02100000)

[Altera_Forum]

thnk you parrado, i success running my program with an onchip memory. 

best regards