# BambooTracker Instrument File (.bti) Format Specification
v1.2.3 - 2019-12-16

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This version is what is revised from v1.0.1 since the tracker changes the bank loading process. All data fields are remained from [v1.2.2](./inst_specs_v1.2.2.md).

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## History
| Version | Date       | Detail                                                             |
| ------- | ---------- | ------------------------------------------------------------------ |
| 1.2.3   | 2019-12-16 | Revised to fix the deep copy of instrument sequence types.         |
| 1.2.2   | 2019-11-09 | Reversed SSG noise pitch order.                                    |
| 1.2.1   | 2019-06-07 | Revised to fix unit data skipping bug of FM operator sequence.     |
| 1.2.0   | 2019-04-10 | Added and changed for SSG tone/hard or square-mask ratio settings. |
| 1.1.0   | 2019-03-24 | Added fields for FM3ch expanded mode.                              |
| 1.0.1   | 2018-12-10 | Added instrument sequence type.                                    |
| 1.0.0   | 2018-11-23 | Initial release.                                                   |
