Sound_ReadSysInfo 1 (changes)
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Programmer's SoundDMA Reference Manuals
» Part 15 – SWI Calls
» Sound Sound_ReadSysInfo
» Sound_ReadSysInfo 1Sound_ReadSysInfo
» Sound_ReadSysInfo 1
Sound_ReadSysInfo 1
| Entry | |
|---|---|
| R0 | 1 (reason code) |
| Exit | |
|---|---|
| R0 | 0 |
| R1 | Flags: |
| Bit 0: Generates service calls Sound rate changing, Sound starting, Sound stopping | |
| Bit 1: SWIs Sound_SelectDefaultController, Sound_EnumerateControllers, Sound_ControllerInfo supported | |
| Bits 2-31: Reserved |
Use
The purpose of this call is to read the features of the version of SoundDMA installed on the system.
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).
See also
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