CSND Services: Difference between revisions

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~~[[Category~~:~~Services]]~~

The CSND service talks to the DSP using the DSP FIFO to negotiate what CSND channels are allocated to the DSP, and this seems to be channels 0-7 (usually). The rest are dedicated to CSND services.

= CSND service "csnd:SND" =

{| class="wikitable" border="1"

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|-

| 0x00020000

| Shutdown

| [[CSND:Shutdown|Shutdown]]

|-

| 0x00030040

| ~~This triggers processing for the command(0x20-bytes) written to~~ [[~~CSND_Shared_Memory~~|~~shared-memory~~]]~~, at the specified shared-mem offset(type0).~~

| [[CSND:ExecuteCommands|ExecuteCommands]]

|-

| 0x00040080

| ~~This triggers processing for the command(0x3C-bytes) written to~~ [[~~CSND_Shared_Memory~~|~~shared-memory~~]]~~, at the specified shared-mem entry index(type1).~~

| [[CSND:PlaySoundDirectly|PlaySoundDirectly]]

|-

| 0x00050000

| ~~This returns an unknown bitmask u32 at responseword~~[2]~~, this command is used for CSND initialization after command 0x00010140 is used.~~

| [[CSND:AcquireSoundChannels|AcquireSoundChannels]]

|-

| 0x00060000

|

| [[CSND:ReleaseSoundChannels|ReleaseSoundChannels]]

|-

| 0x00070000

|

| [[CSND:AcquireCapUnit|AcquireCapUnit]]

|-

| 0x00080040

|

| [[CSND:ReleaseCapUnit|ReleaseCapUnit]]

|-

| 0x00090082

| ~~FlushDCache~~

| [[CSND:FlushDataCache|FlushDataCache]]

|-

| 0x000A0082

| ~~StoreDCache~~

| [[CSND:StoreDataCache|StoreDataCache]]

|-

| 0x000B0082

| ~~InvalidateDCache~~

| [[CSND:InvalidateDataCache|InvalidateDataCache]]

|-

| 0x000C0000

|

| [[CSND:Reset|Reset]]

|}

For cache operations addresses must be in 0x14000000-0x1C000000 range. ~~After~~ [[8.0.0-18]] addresses in the range 0x30000000-0x40000000 are also allowed.

A maximum of 4 service sessions can be opened at the same time for this service.

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 [[BCWAV|CWAVs]]. The audio data must be located in the 0x14000000 virtual memory region, since CSND requires the physical address for playing the audio.

[[Category:Services]]

@@ Line 1: / Line 1: @@
-[[Category:Services]]
+The CSND service talks to the DSP using the DSP FIFO to negotiate what CSND channels are allocated to the DSP, and this seems to be channels 0-7 (usually). The rest are dedicated to CSND services.
+{{Anchor|CSND}}{{Anchor|csnd:SND}}
 = CSND service "csnd:SND" =
 {| class="wikitable" border="1"
@@ Line 10: / Line 12: @@
 |-
 | 0x00020000
-| Shutdown
+| [[CSND:Shutdown|Shutdown]]
 |-
 | 0x00030040
-| This triggers processing for the command(0x20-bytes) written to [[CSND_Shared_Memory|shared-memory]], at the specified shared-mem offset(type0).
+| [[CSND:ExecuteCommands|ExecuteCommands]]
 |-
 | 0x00040080
-| This triggers processing for the command(0x3C-bytes) written to [[CSND_Shared_Memory|shared-memory]], at the specified shared-mem entry index(type1).
+| [[CSND:PlaySoundDirectly|PlaySoundDirectly]]
 |-
 | 0x00050000
-| This returns an unknown bitmask u32 at responseword[2], this command is used for CSND initialization after command 0x00010140 is used.
+| [[CSND:AcquireSoundChannels|AcquireSoundChannels]]
 |-
 | 0x00060000
-|
+| [[CSND:ReleaseSoundChannels|ReleaseSoundChannels]]
 |-
 | 0x00070000
-|
+| [[CSND:AcquireCapUnit|AcquireCapUnit]]
 |-
 | 0x00080040
-|
+| [[CSND:ReleaseCapUnit|ReleaseCapUnit]]
 |-
 | 0x00090082
-| FlushDCache
+| [[CSND:FlushDataCache|FlushDataCache]]
 |-
 | 0x000A0082
-| StoreDCache
+| [[CSND:StoreDataCache|StoreDataCache]]
 |-
 | 0x000B0082
-| InvalidateDCache
+| [[CSND:InvalidateDataCache|InvalidateDataCache]]
 |-
 | 0x000C0000
-|
+| [[CSND:Reset|Reset]]
 |}
-For cache operations addresses must be in 0x14000000-0x1C000000 range. After [[8.0.0-18]] addresses in the range 0x30000000-0x40000000 are also allowed.
+A maximum of 4 service sessions can be opened at the same time for this service.
+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 [[BCWAV|CWAVs]]. The audio data must be located in the 0x14000000 virtual memory region, since CSND requires the physical address for playing the audio.
+[[Category:Services]]