SECTION 4 – UPGRADING G-DEC SOFTWARE
From time to time Fender may release newer versions of G-DEC software. These upgrades will be
transferred from your PC or MAC to the G-DEC. Exact procedures for these upgrades may vary and exact
instructions will be included with the upgrades when they appear. In general the process will be very
similar to the process used for preset downloads, except that it will use the G-DEC AMP UPDATE
function.
SECTION 5 - COPYING INTERNAL G-DEC MIDI TRACKS TO A PC or MAC
It is possible to capture the internal MIDI tracks that the G-DEC generates internally. When playing a
built-in MIDI track, that track is also available at the MIDI out jack to drive external synthesizers, PCs, and
other G-DECs. There are general purpose MIDI editors that have the ability to capture this signal and
store it to disk. Again, check around on the Internet for MIDI tools or visit your favorite store for
suggestions on buying good MIDI tools.
SECTION 6 – FENDER MIDI DUMP FILE FORMAT
The following section outlines Fender’s MIDI preset dump file format. This information can be used to
develop G-DEC specific programs for loading, saving, and interpreting G-DEC preset files. This section
is not for the novice. It is intended only for those with computer programming skills. It is not necessary to
understand any of the below information to load, save or use the G-DEC presets under normal operating
conditions.
MIDI Preset Dump File Format for G-DEC
EXAMPLE dump of Preset U00: Rockin G DEC
F0 08 21 41 02 F7 F0 08 21 41 02 00 00 00 00 52 6F 63 6B 69 6E 20 03 47
20 44 45 43 1C 71 30 7F 2A 1C 0C 01 72 30 00 78 02 05 3B 31 55 2B 60 7C
35 6E 64 00 00 27 F7 F0 08 21 41 02 7B F7
Detailed decoding of what information the above dump includes:
System Exclusive Header
F0 – Start of System Exclusive Message
08 – Fender ID
21 – Device ID (Omni)
41 – G-DEC ID
02 – Function ID (One Preset Message) WARNING: Function ID should only
be 2 or 3. No other number should be used. 2 is one preset, 3 is all
presets
F7 – End of System Exclusive Message
The Following section is sent for each preset downloaded. One of these
sections for a “DUMP PRST” and 50 of these sections for a “DUMP ALL”
System Exclusive Data Packet
F0 – Start of System Exclusive Message
08 – Fender ID
21 – Device ID (Omni)
41 – G-DEC 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 (000 0000)
