Aux I/O not responding

Hello guys

I'm quite new to the Rabbit MCU. I have been trying to send some
messages to an OLED through the aux I/O pins, but none of the pins
associated with the Aux I/O are responsding (including /IORD and /IOWR).
I have macro definition at the start of the source file, amongst others.
Please what am I missing out in the source file.

  Below is a brief description of my file.



#define PORTA_AUX_IO // Enable the external I/O bus

void SendToOLED(int addr, char value)
{
   WrPortE(addr, NULL, value);
}


int main()
{
    WrPortI(IB7CR, &IB7CRShadow, 0x4C);  // Invert

// Ensure tht the 6-bit address external I/O bus is enabled
    MsDelay(1000);        // Wait for one second to allow OLED to reset
itself

    SendToOLED(1, '\B00111001'); // 8-bit, 2 line, 5x8 dots, Western
European font
    SendToOLED(1, '\B00001100'); // Display On, Cursor Off, Non-Blinking
cursor
    SendToOLED(1, '\B00000110'); // Increment and Non-shift Entire
Display
}