Miles Sound System SDK 7.2a

AIL_disable_interrupts

The function AIL_disable_interrupts disables hardware interrupts (IRQs).

U32 AIL_disable_interrupts();

Returns

A special value which may be passed to AIL_restore_interrupts to restore the previous interrupt flag state. This value represents the CPU flags word, not a simple Boolean interrupt state value.

Discussion

This is a DOS-only function.

This function is used internally by the MSS system, and provides a standardized interrupt-disabling function which is independent of the runtime environment in use. Most applications will not need to use AIL_disable_interrupts, as long as they use the MSS API functions to manipulate sound effect and sequence data. It is important to preserve the returned flags value for later use with AIL_restore_interrupts (below), when interrupts no longer need to be disabled.

Disabling interrupts for more than a few milliseconds may cause dropouts and other undesirable effects with digitized sound output, and may also result in music tempo slowdowns.

Group: Low-Level DOS Support Services
Related Functions: AIL_disable_interrupts, AIL_restore_interrupts
Related Basic Types: U32