NiosII_1c12 evalkit with examples on sound output

Hi everybody ,

I was very surprised to know the sound output port on NIOSII_1c12 EvalKit , which is a 4-pin port named J7 (assuming you installed NIOSII IDE in C , the document is in C:\altera\kits\nios2_5\documents\nios_cyclone_1c12_eval , file : Block_Diagram.pdf (at the bottom of the file) , Cyclone_Demo_Placement_Final.pdf (at the lower right corner) , nios2_evaluation_1c12_board_schematic.pdf (page 5 , 12) )

I would like to ask if you have any example projects (either from Altera or Microtronix) that outputs audio sound to the connector J7.

If yes , please show me the source or the URL for me to reference.

Thank you so much,

OneNet