Miles Sound System SDK 7.2a

DDK Function: 302H Periodic Interrupt Service

Discussion

Input:

AX = 302H
BX = Driver number

Output:

None

If the VDI_HDR service_rate_required variable is non-zero, the driver requires real-mode callback service via this function at service_rate_required calls per second. Real-mode callback service is normally needed only for certain music-synthesis devices or non-DMA-equipped audio adapters such as PCMCIA or parallel-port devices.

Most .DIG drivers will not need to use this function for timing, as digital audio devices generally provide their own timing and interrupt capabilities.

Group: DOS Sound Driver Generic Initialization Interface
Related Structures: VDI_HDR