3-20
Digitized Sound I/O Programming
To stop high-speed auto-initialize DMA mode, send the reset DSP command.
At the end of data transfer:
1.
Turn off the DAC speaker.
outp(wSBCB0xC, 0xD3)
2.
Disable the interrupt used.
3.
Restore the original interrupt service routine.
4.
Release the allocated DMA buffer.