Lotus3
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The Gamecard ASIC (known internally as the LOTUS3) is a separate chip on the motherboard responsible for communicating with the Gamecard.
Firmware
FS provides the appropriate Gamecard ASIC's user firmware (Lotus ASIC Firmware or LAFW) which is encrypted, signed and follows the format below.
| Offset | Size | Description |
|---|---|---|
| 0x0 | 0x100 | RSA-PKCS#1 signature |
| 0x100 | 0x4 | Magic ("LAFW") |
| 0x104 | 0x4 | Unknown (0xFF000000, 0xFFFF0000 or 0xFFFFFF00) |
| 0x108 | 0x4 | |
| 0x10C | 0x4 | |
| 0x110 | 0x4 | Version (0, 1 or 3) |
| 0x114 | 0x4 | Unknown (0x80000000) |
| 0x118 | 0x4 | Data size |
| 0x11C | 0x4 | |
| 0x120 | 0x10 | Data hash |
| 0x130 | 0x10 | Placeholder string ("IDIDIDIDIDIDIDID") |
| 0x140 | 0x40 | Empty |
| 0x180 | 0x7680 | Encrypted data |