CD_SetAudioParms 0 (changes)
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CDFSDriver
» SWI Calls
» CD_SetAudioParms
» CD_SetAudioParms 0
CD_SetAudioParms 0
(SWI &4126A)
| Entry | |
|---|---|
| R0 | 0 (Reason code) |
| R1 | Pointer to word-aligned parameter block |
| R7 | Pointer to CDFS Control Block |
| Exit | |
|---|---|
| R0 | -1 if reason code not supported (V flag clear) |
| Error pointer + V set if some other error | |
| Else preserved |
Parameter block
| Word | Use |
|---|---|
| 0 | Channel 0 volume level |
| 1 | Channel 1 volume level |
Use
This SWI can be used to set the audio volume levels.
Notes
Volume levels are in the range 0 to 0xffff inclusive, where 0 = mute and 0xffff = max.
CD_Supported indicates whether this SWI is supported.
See also
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