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"

Line 13:

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|-

| 0x00020000

| Shutdown

| [[CSND:Shutdown|Shutdown]]

|-

| 0x00030040

| ~~ExecuteType0Commands~~

| [[CSND:ExecuteCommands|ExecuteCommands]]

|-

| 0x00040080

| ~~ExecuteType1Commands~~

| [[CSND:PlaySoundDirectly|PlaySoundDirectly]]

|-

| 0x00050000

| AcquireSoundChannels~~. This function tries to acquire sound channels. Response cmdbuf[2~~] ~~holds a bitmask to which channels were allocated to this process.~~

| [[CSND:AcquireSoundChannels|AcquireSoundChannels]]

|-

| 0x00060000

| ReleaseSoundChannels.

| [[CSND:ReleaseSoundChannels|ReleaseSoundChannels]]

|-

| 0x00070000

| ~~AcquireUnknown. This function tries to acquire unknown channels (16).~~

| [[CSND:AcquireCapUnit|AcquireCapUnit]]

|-

| 0x00080040

| ~~ReleaseUnknown. This function tries to release the channels corresponding to the given bitmask in cmdbuf~~[1].

| [[CSND:ReleaseCapUnit|ReleaseCapUnit]]

|-

| 0x00090082

| ~~FlushDCache~~

| [[CSND:FlushDataCache|FlushDataCache]]

|-

| 0x000A0082

| ~~StoreDCache~~

| [[CSND:StoreDataCache|StoreDataCache]]

|-

| 0x000B0082

| ~~InvalidateDCache~~

| [[CSND:InvalidateDataCache|InvalidateDataCache]]

|-

| 0x000C0000

|

| [[CSND:Reset|Reset]]

|}

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 13: / Line 12: @@
 |-
 | 0x00020000
-| Shutdown
+| [[CSND:Shutdown|Shutdown]]
 |-
 | 0x00030040
-| ExecuteType0Commands
+| [[CSND:ExecuteCommands|ExecuteCommands]]
 |-
 | 0x00040080
-| ExecuteType1Commands
+| [[CSND:PlaySoundDirectly|PlaySoundDirectly]]
 |-
 | 0x00050000
-| AcquireSoundChannels. This function tries to acquire sound channels. Response cmdbuf[2] holds a bitmask to which channels were allocated to this process.
+| [[CSND:AcquireSoundChannels|AcquireSoundChannels]]
 |-
 | 0x00060000
-| ReleaseSoundChannels.
+| [[CSND:ReleaseSoundChannels|ReleaseSoundChannels]]
 |-
 | 0x00070000
-| AcquireUnknown. This function tries to acquire unknown channels (16).
+| [[CSND:AcquireCapUnit|AcquireCapUnit]]
 |-
 | 0x00080040
-| ReleaseUnknown. This function tries to release the channels corresponding to the given bitmask in cmdbuf[1].
+| [[CSND:ReleaseCapUnit|ReleaseCapUnit]]
 |-
 | 0x00090082
-| FlushDCache
+| [[CSND:FlushDataCache|FlushDataCache]]
 |-
 | 0x000A0082
-| StoreDCache
+| [[CSND:StoreDataCache|StoreDataCache]]
 |-
 | 0x000B0082
-| InvalidateDCache
+| [[CSND:InvalidateDataCache|InvalidateDataCache]]
 |-
 | 0x000C0000
-|
+| [[CSND:Reset|Reset]]
 |}
+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]]