Legacy FIRM PXI
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This page describes the PXI commands for TWL_FIRM/AGB_FIRM.
| Command Header | Available since system version | Description |
|---|---|---|
| 0x0001.... | 1.0.0-0 | ? |
| 0x00020080 | 1.0.0-0 | (u64 application_titleID) This launches the specified TWL title. Eventually this will wait for command 0x00040080 to be sent. |
| 0x00030080 | 1.0.0-0 | (u64 application_titleID) This launches the specified GBA VC title. |
| 0x00040080 | 1.0.0-0 | ? |
| 0x0005.... | 1.0.0-0 | ? |
| 0x0006.... | 1.0.0-0 | ? |
| 0x0007.... | 1.0.0-0 | ? |
| 0x0008.... | 1.0.0-0 | ? |
| 0x0009.... | 1.0.0-0 | ? |
| 0x000A.... | 1.0.0-0 | ? |
| 0x000B0040 | 1.0.0-0 | This is used for TWL initialization, prior to using command 0x00020080. |
| 0x000C0800 | 1.0.0-0 | This writes the input 0x80-byte ASCII data to nand:/rw/sys/lgy.log. |
Command 0x2
This does the following:
- Waits for an u8 state field to become non-zero.
- Clears DSi memory, etc.
- Loads the DS(i) application specified by the command request titleID. If this fails, it immediately returns the error for this.
- Initializes the DSi memory at 0x02fe7000 and 0x02fffc00.
- Loads the TWL launcher located at physical address 0x27C00000, which was written there by the TwlBg ARM11 process.
- Loads the TWL bootloader, see here.
- Initializes DSi memory/keys, 0x10018000 registers, etc.
- Writes value 0x3 to REG_BOOTENV, and value 0x1 to an u8 state field.
- Uses svcSignalEvent, then returns.