access the custom logic

[Altera_Forum]

FOr nios I 

 I have created a custome logic pwm for my project...SOPC assignes me address of 4A0 - 4AF  address 00 - duty cycle address 01 - clock divide  is it correct is program it in C such this way ?  int *duty_cycle = (int *) 0x000004A0; //  int *clock_divide = (int *) 0x000004A4; //   int w = 10; int z = 1000;  //assigned value to the inputs.  *clock_divide = z; *duty_cycle = w;  ---------------------------------------------------------------------------------  i have tried this but htere is no output...any suggestions ?

[Altera_Forum]

You should better consider using the IORD() and IOWR() macros from the <io.h> for accessing your IP registers, or you might experience arratic behaviours due to data cache operations and compiler optimizations. 

 If you have tested your component outside of the NIOS-II system (in a simulation only separate project) and the results were as expected, and you&#39;re still having problems, you could "signaltap" your entire design.