Assigning Physical values to pointers

[Kanner]

I am using C++ to write a program for a u-processor circuit. In trying to control hardware, I have things mapped to specific memory addresses. I know I will have to use pointers to point to these locations, How can I assign specific numbers to pointers to represent these memory locations. If I directly assign a number value to a pointer,

ie

unsigned int * mypointer;

  mypointer = 0x900E0000;

I get compile errors of: (a value of type "unsigned int" cannot be assigned to an entity of type "unsigned int *")

Furthermore, what I really need to do is assign mnemonic constants to the address values for easier readability. something like:

const unsigned int Port=0x900E0000;
  unsigned int * mypointer;

  mypointer = Port;

anyway of doing this type of stuff?

[helios]

What you wan to do there is mypointer = (unsigned int *)0x900E0000;
However, modern OSs crash programs that try to access memory that doesn't belong to them.

[Incubbus]

http://cplusplus.com/forum/beginner/1777/