Lpc2000

Hi, Dear all

I'm using a LPC2214 in my project. and have released P2.31:8 as a 
GPIO but P2.7:0 as an external memory data bus. Strangely, I can't 
control the behavior of P2.31:8 because I can't find PORT2's GPIO 
register(IOPIN2,IODIR2..). How can I do this?

Thanks for your help!