Manu ("Manufacturing") services are provided by the 010000000000B14A sysmodule, which is installed at the factory but not on normal retail systems.
manu
| Cmd | Name | Notes |
|---|---|---|
| 0 | Takes 4 bytes of input, and produces 0 bytes output. | |
| 1 | FsFile_Exists | Takes an X descriptor, and produces, 8 bytes output. |
| 2 | FsFile_Read | Takes 0x18 bytes of input, a B descriptor, and an X descriptor, and produces 0 bytes of output. |
| 3 | FsFile_Write | Takes 0x18 bytes of input, an A descriptor, and an X descriptor, and produces 0 bytes of output. |
| 4 | Takes 4 bytes of input, and produces 0 bytes of output. | |
| 5 | Takes 0x10 bytes of input and a B descriptor, and produces 8 bytes of output. | |
| 6 | Takes 0x10 bytes of input and an A descriptor, and produces 8 bytes of output. |
This seems to interface with usb:ds. SystemInitializer only uses cmd1..cmd3.
FsFile_Exists
Takes an input path string(type-0x9 buffer), returns 8-bytes for the output u8 flag.
Checks whether the specified file exists.
This is "FsFile::Exists" in SystemInitializer.
FsFile_Read
Takes a type-0x6 output buffer and a type-0x9 input string path buffer, and 3 u64s: <same size value from databuf>, unk, <same size value from databuf>. Where unk is probably offset?
Reads data from the specified file.
FsFile_Write
Same as FsFile_Read except the databuf is a type-0x5 input buffer.
Writes data to the specified file.
SystemInitializer also uses this as "FsFile::Create" with all input u64s set to 0.