is their a way to directly control the DAC port because the only way i can find in robotc to do any thing with it is the dumb playtone functions and what not, i would like direct control over the output voltage of the port, any way to do that in robot c?

The DAC is specifically intended to play sounds and tones, so those are the only functions that are available. What are you trying to accomplish?

I was going to use it to produce composite video. The limited functionality of the robotc compiler itself though is kinda putting me off of even trying my project. The compiler seems to limit the functionality of the cortex itself by only allowing it to be used in certain ways.