Boktai charset
Boktai uses a multi-byte encoding for text. Bytes 0x20-0x7f are (almost) identical to ASCII. Bytes 0x80+ are the first byte of a two-byte sequence. Two-byte sequences are used for special characters, and Hiragana/Katakana/Kanji in the Japanese games.
Additionally, Boktai 1 contains at least two unused characters. 0x8000 looks like a squished MATHEMATICAL DOUBLE-STRUCK CAPITAL X (U+1D54F). 0x8100 looks like a cat face. It is unknown if there are further unused characters.
| Game | Charset |
|---|---|
| 🇺🇸 Boktai 1 (U) | Link |
| 🇯🇵 Boktai 3 (J) | Link (unofficial translation patch) |
TODO: Check byte 0x1f in both US and EU versions.