Subj : Re: Beginner needs help with MSB/LSB and 7bit bytes
To   : comp.programming
From : Rich
Date : Thu Sep 29 2005 01:57 pm

Here's the entire doc from the vendor


*************************************************
MIDI Preset Dump File Format for Cyber-Deluxe

Preset 00: Stadium Rock

F0 08 21 21 02 F7 F0 08 21 21 02 00 00 00 00 10 6C 20 3B 07 02 0D 5E 24
56 7F 5D 5D 21 79 1D 7F 61 01 02 01 57 0D 26 09 75 7F 1F 38 0C 7F 40 2C
7E 3C 00 7E 00 14 F7 F0 08 21 21 02 7B F7

System Exclusive Header
F0 - Start of System Exclusive Message

08 - Fender ID

21 - Device ID (Omni)

21 - Cyber-Deluxe ID

02 - Function ID (One Preset Message)

F7 - End of System Exclusive Message


System Exclusive Data Packet
F0 - Start of System Exclusive Message

08 - Fender ID

21 - Device ID (Omni)

21 - Cyber-Deluxe ID

02 - Function ID (One Preset Message)

00 - Packet Number

00 - Most significant byte for preset number

00 - Least significant byte for preset number (Preset 0)

00 - Packed most significant bits for subsequent 7 bytes (x000 0000)

10 - Most Significant Byte for Compressed Bits for E2_Prom_Bits1
structure using MSB 0 (this byte is redundant)

6C - Least Significant Byte for Compressed Bits for E2_Prom_Bits1
structure using MSB 0

E2_Prom_Bits1 Format:

1 0 6 C

0001 0000 0110 1100

0001 0000 - don't care

01 - Noise Gate Threshold (Medium)

10 - Noise Gate Selection (NG 2)

1100 - Amp Type (British 3)

20 - Most Significant Byte for Compressed Bits for E2_Prom_Bits2
structure using MSB 0 (this byte is redundant)

3B - Least Significant Byte for Compressed Bits for E2_Prom_Bits2
structure using MSB 0

E2_Prom_Bits2 Format:

2 0 3 B

0010 0000 0011 1101

0010 0000 - don't care

0 - unused

011 - Compresssor Selection (Compressor 3)

1101 - Cont Controller (Modulation FX parameter 1)

07 - Reverb Type (Arena 2) using MSB 0

02 - Modulation FX Type (Chorus 3) using MSB 0

0D - Delay Type (Tape 3) using MSB 0

5E - Packed most significant bits for subsequent 7 bytes (x101 1110)

24 - Reverb Time (6.7) using MSB 1

56 - Reverb Dwell (4.0) using MSB 0

7F - Reverb Diffusion (9.9) using MSB 1

5D - Reverb Tone (8.7) using MSB 1

5D - Modulation FX Parameter 1 (8.7) using MSB 1

21 - Modulation FX Parameter 2 (6.6) using MSB 1

79 - Modulation FX Parameter 3 (5.2) using MSB 0

1D - Packed most significant bits for subsequent 7 bytes (x001 1101)

7F - Modulation FX Parameter 4 (5.4) using MSB 0

61 - Delay Time (510 ms) using MSB 0

01 - Delay Feedback (5.5) using MSB 1

02 - Delay Parameter 3 (5.5) using MSB 1

01 - Delay Parameter 4 (5.5) using MSB 1

57 - Noise Gate Depth (4.0) using MSB 0

0D - Compressor Level (6.0) using MSB 1

26 - Packed most significant bits for subsequent 7 bytes (x010 0110)

09 - Compressor Parameter 1 (1.3) using MSB 0

75 - Compressor Parameter 2 (9.6) using MSB 1

7F - Compressor Parameter 3 (5.5) using MSB 0

1F - Compressor Parameter 4 (2.1) using MSB 0

38 - Gain (7.5) using MSB 1

0C - Volume (5.9) using MSB 1

7F - Treble (5.5) using MSB 0

40 - Packed most significant bits for subsequent 7 bytes (x100 0000)

2C - Middle (7.0) using MSB 1

7E - Bass (5.5) using MSB 0

3C - Reverb Level (3.1) using MSB 0

00 - Modulation FX Level (1.0) using MSB 0

7E - Delay Level (5.4) using MSB 0

00 - SFX Level (1.0) using MSB 0 (not used)

14 - Checksum byte calculated as the XOR of all bytes in this packet
after F0 and to just before this byte:

The XOR'ed value of the following data:

08 21 21 02 00 00 00 00 10 6C 20 3B 07 02 0D 5E 24 56 7F 5D 5D 21 79 1D
7F 61 01 02 01 57 0D 26 09 75 7F 1F 38 0C 7F 40 2C 7E 3C 00 7E 00

F7 - End of System Exclusive Message

System Exclusive End of File Message
F0 - Start of System Exclusive Message

08 - Fender ID

21 - Device ID (Omni)

21 - Cyber-Deluxe ID

02 - Function ID (One Preset Message)

7B - End of System Exclusive File Byte

F7 - End of System Exclusive Message

.