CSND Services
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CSND service "csnd:SND"
| Command Header | Description |
|---|---|
| 0x00010140 | Initialize |
| 0x00020000 | Shutdown |
| 0x00030040 | This triggers processing for the command(0x20-bytes) written to shared-memory, at the specified shared-mem offset(type0). |
| 0x00040080 | This triggers processing for the command(0x3C-bytes) written to shared-memory, at the specified shared-mem entry index(type1). |
| 0x00050000 | This returns an unknown bitmask u32 at responseword[2], this command is used for CSND initialization after command 0x00010140 is used. |
| 0x00060000 | |
| 0x00070000 | |
| 0x00080040 | |
| 0x00090082 | FlushDCache |
| 0x000A0082 | StoreDCache |
| 0x000B0082 | InvalidateDCache |
| 0x000C0000 |
For cache operations addresses must be in 0x14000000-0x1C000000 range. Starting with 8.0.0-18 addresses in the range 0x30000000-0x40000000 are also allowed.
This service is normally used for playing CWAVs. The audio data must be located in the 0x14000000 virtual memory region, since CSND requires the physical address for playing the audio.