The ROM image of a version of this DSP1 demo was released by Nintendo Player years ago, but the source code was recently discovered. I wrote an article about it. Included are binaries assembled from the source code, thanks to Luigibood. The source can be assembled using tools released by Jackhead last year. Thanks to the Video Game History Foundation for preserving this!
This is a demonstration program used for showing the capabilities of the DSP1 coprocessor chip.