basic delay using sharc internal memory

Hi

I am trying to build a basic delay. Everytime I load up a normal SIgmaDSP, I can utilize the maximum delay ram, and get a good result. Every time I load up a sharc DSP, I cannot get any result. The memory usage never changes. AM I missing something extremely obvious? Do I need to declare which dsp and how much inernal memory it has?

Also, can I use algorithm designer to modify he maximum delay time?If so, how?