Anyone can let me know where I can find assembly program for all the basic interface on MCB 2100 evaluation board.
Yes - I've already given them!
In addition, of course, you will also need to study the ARM Assembler Manual:
http://www.keil.com/support/man/docs/armasm/
Maybe this series of articles might help you:
Building Bare-Metal ARM Systems with GNU: Part 1 - 8 By Miro Samek, Quantum Leaps Embedded.com "
There are also links to other resources...