In SPSS, the encoded internal value for the dependent variable depends on how you encoded the raw data. If you encode the raw data as 0 and 1, then SPSS will use these values to represent the internal values of the dependent variable. That is, when you run the analysis in SPSS, 0 will be interpreted as "no" and 1 will be interpreted as "yes" in the same sense that your original value represents.
