3-18
Digitized Sound I/O Programming
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.
During high-speed DMA mode data I/O, the DSP will not accept any commands.
Hence, to stop data transfer before the end of a block, send the reset DSP command.