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Sound_SelectDefaultController

SoundDMA
» SWI Calls
» Sound_SelectDefaultController

Sound_SelectDefaultController

(SWI &40148)
Entry
R0 Pointer to space/control terminated controller ID string
Exit
R0 0, or pointer to error block

Use

The purpose of this call is to select the audio controller device that should be used as the default device. This is the device which the 8-bit and 16-bit sound systems will use to output their audio.

Notes

Many versions of SoundDMA do not return errors when unknown SWIs are called. Therefore, to detect if this SWI is supported, check if R0 has been set to 0 on exit (Valid reason codes start at 1), or use Sound_ReadSysInfo 1.

The current audio device can be determined by calling Sound_ReadSysInfo 2.

*Audio can also be used to select the default controller.

See also

  • Sound SWI Calls
  • Sound_ReadSysInfo
  • Sound_EnumerateControllers
  • Sound_ControllerInfo
  • *Audio
Revised on November 13, 2017 01:43:18 by Alan Robertson (52) (49.192.18.196)
Edit | Back in time (3 revisions) | See changes | History | Views: Print | Source | Linked from: *Audio, Sound SWI Calls, Sound_ReadSysInfo 1, Sound_ReadSysInfo 2, Sound_EnumerateControllers, SoundDMA SWI Calls

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