GPIO input

Hi

I need to connect my MCBSTR9 board to a FPGA board. I have been trying to get input via GPIO pins. I am able to get input only over P4 and P5 (I have tried P0 - P6). I am displaying the output on the LEDs. Also I would like to know more about the 4 modes selected by GPIOOUT.

I have written the following small code.

#include <91x_lib.h>

int main(void){
SCU->GPIOOUT[7] = 0x5555;
GPIO7->DDR = 0xFF;
SCU->GPIOOUT[6] = 0x0000; /* tried 0-5 also in place of 6*/
SCU->GPIOIN[6] = 0xFF;
GPIO6->DDR = 0x00;
while(1){
GPIO7->DR[0x3FC] = GPIO->DR[0x3FC];
}

}

Thanks
Aseem