1. A method of debugging a digital signal processor (DSP) program in a graphical development environment, the method comprising: (a) displaying a graphical representation of at least a portion of a target design of the DSP program on a computer display, wherein the target design includes a plurality of functional blocks coupled to one another by a plurality of connections, and wherein the graphical representation includes a plurality of block elements and a plurality of connection elements respectively representing functional blocks and connections in the target design; (b) generating for the target design of the DSP program, target data representative of a plurality of values output by the plurality of functional blocks over the plurality of connections; (c) comparing the target data to reference data associated with a reference system for the DSP program to determine disparities between the target and reference data; and (d) displaying the plurality of connection elements in selected colors among a plurality of colors to visually represent the disparities between the target and reference data.