Rapid Prototyping with 16/32 bits MCU

hi Lubin my group have used an example that is in the forum to connect between dsPIC and DAC with some modification as shown: http://i1237.photobucket.com/albums/ff473/zajora/blocksetdac-1.jpg using mplab we downloaded the program and run it but no signal is reaching the DAC, when halting the progra...