|0||Header code [0x001000c0]|
|1||Channel (0 - 7 0:Debug from DSP 1:P-DMA 2:audio 3:binary 4-7: free ?)|
|2||Peer (0 = from DSP, 1 = from ARM)|
0x100 byte after the Request header
|0||(Size << 14) | 0x2|
|2||u16, Actual read size|
Channel 2 (Audio)
Channel 2 returns the DSP DRAM addresses of structures located in the DSP Memory Region. DSP:ConvertProcessAddressFromDspDram can be used to convert these addresses into virtual memory addresses. The list of addresses and the length of the list vary depending on DSP firmware version.
Channel 3 (Binary)
The purpose of channel 3 is unknown. The behaviour of this pipe varies depending on DSP firmware version. Observed behaviours include:
- doing nothing.
- echoing what is returned to it.
- long strings of zeros.