12decode

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==== Multimode ====

In addition to the outdated sysex documentation, at least in firmware 1.15, a protocol for the multimode is implemented

^ Label ^ Value ^ Description   ^
| MULR  | 01h   | Multi Request |
| MULD  | 11h   | Multi Dump    |

==== User Wavetables ====

^ Label ^ Value ^ Description    ^
| WTBD  | 12h   | Wavetable Dump |

A wavetable dump is used to transfer wavetable data to the Blofeld. Each wavetable is transferred as 64 consecutive wave dumps.

^ WT ^ WN     ^ Location                  ^
| 50 | 00..3F | Wavetable 80, Wave 1..64  |
| 76 | 00..3F | Wavetable 118, Wave 1..64 |

==== Sample Code ====

Convert a 21 bit signed integer (provided in three 7-bit characters) into a 32 bit signed integer

http://stackoverflow.com/questions/11704309/how-to-build-a-negative-32-bit-integer-from-bytes-without-a-range-check-error

            uint32 sample =
            (sysex[kWavetableDataOffset + index * 3 + 0] << 14) |
            (sysex[kWavetableDataOffset + index * 3 + 1] << 7) |
            (sysex[kWavetableDataOffset + index * 3 + 2] << 0);
            
            if (sample &  0x00100000) {
                sample |= 0xfff00000;
            }
            
            curWavetable.data[wave][index] = (int)sample;