hi,
like Andy said there should be nothing preventing u from accessing the code memory. search keil knowledge base for additional help (www.keil.com).
we have used pointers to code memory, i am pasting some part of it, hope it will help u.

unsigned char code *p,*q;
p = (unsigned char code *) 0xCFFF;

it is as simple as that.

Good Luck
Shweta