1 #define MIXER_INTERRUPT_SETUP_REGISTER 0x80 2 #define MIXER_DMA_SETUP_REGISTER 0x81 3 #define MIXER_INTERRUPT_STATUS_REGISTEER 0x82 4 5 void get_dma(SB16* sb16); 6 unsigned char read_mixer(unsigned short base,unsigned char reg); 7 unsigned char get_irq(SB16* sb16); 8 9