This is an experimental implementation of an FPGA-based sigma-delta DAC and audio player.
It expects 48KHz 16-bit signed PCM stereo audio data in SPI flash @ 0x000000.
$ make gen_sine
$ openFPGALoader -c dirtyJtag -f sine.pcm
$ make audio_noir
$ openFPGALoader -c dirtyJtag output/audio.bit