Defines starting with `d' in src/od-dos/sound

• DEBUG src/od-dos/sound/gus.c:17
• DEFAULT_SOUND_BITS src/od-dos/sound/sound.h:29
• DEFAULT_SOUND_FREQ src/od-dos/sound/sound.h:30
• DEFAULT_SOUND_MAXB src/od-dos/sound/sound.h:27
• DEFAULT_SOUND_MINB src/od-dos/sound/sound.h:28
• DMA_MODE_AUTOINIT src/od-dos/sound/dma.h:13
• DMA_MODE_BLOCK src/od-dos/sound/dma.h:20
• DMA_MODE_CASCADE src/od-dos/sound/dma.h:21
• DMA_MODE_DECREMENT src/od-dos/sound/dma.h:16
• DMA_MODE_DEMAND src/od-dos/sound/dma.h:18
• DMA_MODE_INCREMENT src/od-dos/sound/dma.h:15
• DMA_MODE_READ src/od-dos/sound/dma.h:11
• DMA_MODE_SINGLE src/od-dos/sound/dma.h:19
• DMA_MODE_WRITE src/od-dos/sound/dma.h:10
• DMA_READ src/od-dos/sound/dma.h:24
• DMA_READ_AUTOINIT src/od-dos/sound/dma.h:26
• DMA_WRITE src/od-dos/sound/dma.h:25
• DMA_WRITE_AUTOINIT src/od-dos/sound/dma.h:27