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Index Word Description
0 Header code [0x00370042]
1 Size (capped to 0x40)
2 (Size << 14) | 2
3 void*, Input Buffer


Index Word Description
0 Header code
1 Result code


Offset Size Description
0x0 0x4 Type?
0x4 0x4 Title Unique ID of the applet which set this SysMenuArg structure
0x8 0x8 u64, Program ID of the title to launch
0x10 0x4 ?
0x14 0x4 1 + <bit value loaded from Cfg block 0xC0000>

The above is the structure of the 0x18-byte buffer used with Home Menu for StoreSysMenuArg/LoadSysMenuArg. The uniqueID is for a NAND title with tid-high 000400030, this title must be installed in NAND. Only certain uniqueIDs can be used here.


This copies the input buffer to FIRM-launch params+0x500, in NS state.