Dave Smith Instruments Evolver Manuel d'utilisateur télécharger pdf (Page 60)

Waveshape Data Dump

Status Description

1111 0000 System Exclusive (SysEx)

0000 0001 DSI ID

0010 0000 Evolver ID

0000 0001 File Version

0000 1010 Waveshape Data

0vvv vvvv Waveshape number, 0 – 127, corresponds to Waveshapes 1 – 128. Only

Waveshapes 96 – 127 can be sent to Evolver and saved as user

programmable; others will be ignored.

0vvv vvvv 293 bytes in “packed MS bit” format (see page Error! Bookmark not

defined.). The 293 bytes = 256 data bytes, in the format of LS byte/MS

byte, for the 128 16-bit words that make up a waveshape. The ROM

Waveshapes are 12 bit two’s complement (to match the VS), but the User

Waveshapes (97 – 128) can be a full 16 bits.

1111 0111 End of Exclusive (EOX)

Packed Data Format

Data is packed in 8 byte “packets”, with the MS bit stripped from 7 parameter bytes, and

packed into an eighth byte, which is sent at the start of the 8 byte packet.

Example:

Input Data

Packed MIDI data

1 A7 A6 A5 A4 A3 A2 A1 A0 1 00 G7 F7 E7 D7 C7 B7 A7

2 B7 B6 B5 B4 B3 B2 B1 B0 2 00 A6 A5 A4 A3 A2 A1 A0

3 C7 C6 C5 C4 C3 C2 C1 C0 3 00 B6 B5 B4 B3 B2 B1 B0

4 D7 D6 D5 D4 D3 D2 D1 D0 4 00 C6 C5 C4 C3 C2 C1 C0

5 E7 E6 E5 E4 E3 E2 E1 E0 5 00 D6 D5 D4 D3 D2 D1 D0

6 F7 E6 E5 E4 E3 E2 E1 E0 6 00 E6 E5 E4 E3 E2 E1 E0

7 G7 G6 G5 G4 G3 G2 G1 G0 7 00 E6 E5 E4 E3 E2 E1 E0

8 00 G6 G5 G4 G3 G2 G1 G0

This is why it takes 220 MIDI bytes to transmit 192 Program/Sequence data bytes, and 293

bytes to send 256 Waveshape bytes.

1 2 ... 55 56 57 58 59 60 61 62 63 64 65 ... 75 76

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Dave Smith Instruments Evolver Manuel d'utilisateur Page 60