Request
| Index Word | Description |
|---|---|
| 0 | Header code [0x080C00C2] |
| 1 | Archive idcode |
| 2 | LowPath.Type |
| 3 | LowPath.Size |
| 4 | (LowPath.Size<<14) | 2 |
| 5 | LowPath.Data pointer |
Response
| Index Word | Description |
|---|---|
| 0 | Header code |
| 1 | Resultcode |
| 2 | Archive handle lower word |
| 3 | Archive handle upper word |
Archive idcodes
| Idcode | Description | Accessible via FS | Accessible via FSPXI | Requires binary Lowpath |
|---|---|---|---|---|
| 0x00000003 | Application RomFS | Yes | No | No |
| 0x00000004 | SaveData | Yes | No | No |
| 0x00000006 | ExtSaveData | Yes | No | Yes |
| 0x00000007 | Shared ExtSaveData | Yes | No | Yes |
| 0x00000008 | SystemSaveData | Yes | No | Yes |
| 0x00000009 | SDMC | Yes | Yes | No |
| 0x0000000A | SDMC Write-Only | Yes | No | No |
| 0x12345678 | ExtSaveData for BOSS | Yes | No | Yes |
| 0x12345679 | CARD SPI FS | Yes | Yes | No |
| 0x1234567B | ExtSaveData, and ExtSaveData for BOSS | No | Yes | Yes |
| 0x1234567C | SystemSaveData | No | Yes | Yes |
| 0x1234567D | NAND RW | Yes | Yes | No |
| 0x1234567E | NAND RO | Yes | Yes | No |
| 0x1234567F | NAND RO Write FS | No | Yes | No |
| 0x2345678A | User/GameCard SaveData (for check), and other uses (FS can only mount the latter) (lo hi mediatype reserved) | Yes | Yes | Yes |
| 0x2345678B | ? | No | Yes | Yes |
| 0x2345678C | ? | No | Yes | Yes |
| 0x2345678D | ? | No | Yes | No |
| 0x2345678E | SaveData, ExeFS, and RomFS (For FS, only ExeFS) | Yes | Yes | Yes |
| 0x567890AB | NAND CTR FS | No | Yes | No |
| 0x567890AC | TWL PHOTO | Yes | Yes | No |
| 0x567890AD | ? | No | Yes | No |
| 0x567890AE | NAND TWL FS | Yes | Yes | No |
| 0x567890AF | NAND W FS | Yes | Yes | No |
| 0x567890B0 | ? | No | Yes | No |
| 0x567890B1 | Gamecard SaveData (for check) | Yes | No | No |
| 0x567890B2 | UserSaveData (for check) | Yes | No | Yes |
Archives listed as not requiring a binary lowpath, use lowpath type empty.
Archives CTR NAND, NAND RO Write FS, TWL NAND, NAND W FS, and CARD SPI FS require the corresponding process exheader access control mount flag to be set, in the exheader for any of the currently running ARM11 processes, for FSPXI. The access rights checked by FS module for archive mounting with fs:USER, are stored in the process' exheader accessinfo.