Display Mif / Hex file in dual port ram on Nios II stdout

I'm trying to fill a dual port ram (framebuffer) with a Mif File and then print it out with NIOS II and its C-Code programming.

The Mif File (converted to Hex) and loaded into the dual port ram looks like this:

-- quartus prime generated memory initialization file (.mif)

width=8;

depth=12;

address_radix=hex;

data_radix=hex;

content begin

0 : ab;

1 : cd;

2 : ef;

3 : 12;

4 : 34;

5 : 56;

6 : 78;

7 : 9a;

8 : bc;

9 : de;

a : f1;

b : 23;

end;

The c-code for the NIOS II looks like this (and does not work):

# include <stdio.h># include <stddef.h># include <stdint.h># include "system.h"

int main(void)

{

int MEMORY_FB;

MEMORY_FB = 0x5000;

volatile char *mem_fb = (volatile char*) MEMORY_FB;

int i;

for (i=0;i<13;i++){

printf("%x\n", mem_fb);

}

return 0;

}

[/I]It prints out:

ffffffab

0

0

0

ffffffcd

0

0

0

ff

How can I fix this to get "ABCDEF123456789ABCDEF123" as an output?

This is only a test for image data a camera will collect later on.