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Barsik-Barbosik / Zoom-Firmware-Editor

MIT License
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Support GCE-3 'Guitar Circuit Emulator' #26

Open zeroeth opened 4 years ago

zeroeth commented 4 years ago

I was poking around at the firmware here https://www.zoom.co.jp/products/production-recording/audio-interfaces/gce-3-guitar-lab-circuit-emulator

Seems to contain all the same structure as the large zooms, leads me to think its just a G#n series without any displays/buttons. Might be a nice portable source for hacking once we figure out the ZD2 formats.

Tried to open the firmware exe with the editor, but didn't list anything.

shooking commented 3 years ago

hi there So I got one of these - loving it. If you like then please follow my YouTube videos where I am reversing it.

https://www.youtube.com/watch?v=o0qB6FYXUSo

You can find more videos on the channel.

In the above I unbox, then add USBpCAP to look at what is going on. Later I demonstrate using MidiOx to simulate a Pi4 (or other code) editing the GCE-3

I will edit another video over the weekend. In this one I set the GCE-3 into B1XFour mode. I create two patches, Pants 1 and Pants2, on my physical B1XFour at locations 51 and 52. I dump the sysex via MidiOx.

Then I load up GCE-3 to demonstrate the content on the GCE-3's B1XFour - it is essentially factory.

Next I use MidiOx to load Pants 1 into the GCE-3. And though and behold Patch 1 is now Pants 1. I verify it is identical to my B1XFour patch.

Spurred on by this, I ask the MidiOx to interrogate the GCE-3's memory. Can it find Glam Comp on 1-3? Sure. Can it find Jaco on 1-7. SURE!

Now whether the system will recall this - will find out in the morning. BUT you can guess what I will be doing - using the Pi 4 to run Mungewell's zoom-zt2 to determine if I can get the FLST etc etc. And if so then I pretty much guarantee this GCE, in B1XFour emulation, respects the sysex.

Then I will see what happens if one emulated say a G5n. Does this B1XFour patch corrupt? Or does the machine switch to a B1XFour. I wager it will corrupt.

In which case one would need to determine "hey ... what machine are you" and we know this question ...

f0 7e 00 06 01 f7 responding f0 7e 00 06 02 52 6e 00 00 00 32 2e 30 30 f7 For a B1XFour 2.00 I think this little box is gonna be fun!
shooking commented 2 years ago

I can pretty much control the GCE-3 with exception of looper, rhythms and external pedals (of which there is no input for a GCE-3 so no idea why bother to emulate X variants) More on my youtube channel or ZoomPedalFun github

shooking commented 2 years ago

Now I can handle the looper in terms of selecting the FX. Not sure how to use the footswitches necessary for start/stop. Zoom clearly are able to do it :-( But should be able to control the params.