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1
I also highly recommend going back to the old Yahoo VG-8 group archives and copy and paste all Bill's posts (some some other VG-99 posts) to a textfile.

Back when I was learning the VG-99 his earlier exploration helped me see the box a little better.  There's LOTS AND LOTS of information I've never seen anywhere else there. 



2
It's thread NECRO time!!! :)

I just bought a GP-10, which DOES have the reverse feature.  However, I kept my GR-33, so I needed to use this thread and the information here to reverse the wires.

Once again, the pictures and the info stands the test of time, as it is 2017 and I just reversed my GK-3 on a homemade EVH strat.  I will try and get some pictures posted.  I also bought a brand new GK-3 for my Ibanez RG920MQM, but I might consider getting the KIT since this is a nice guitar and it is worth it to me.

Thanks again to the original poster, this was super easy to do.

David
3
Six-Eight:  Are you sure about that algorithm?  I've always used this:

# Example: Take the address (4 bytes) and data (1 byte) in this case
vals = [0x60, 0x00, 0x12, 0x14, 0x01]

# Sum with 7-bit wraparound
accum = 0
for val in vals:
    accum = (accum + val) & 0x7F

# Checksum is lower 7 bits of the difference w/ 128
cksum = (128 - accum) & 0x7F

Your post is not doing a difference with 128.
Yes he is! The last bit of his fifth line '80 - 7F = 01'
80 hex is 128 decimal.
I hope that foot of yours tastes good  ;D
4
41 00 00 00 00 3B is the identifyer for Boss MS3
12 means write data (11 is data request)
7F 00 00 00 is the address
00 is the data
01 the checksum (80 - sum of data and address: 7F + 00 +00 +00 +00 = 7F, 80 - 7F = 01

Try sending F0 41 00 00 00 00 3B 12 7F 00 00 00 01 00 F7

Six-Eight:  Are you sure about that algorithm?  I've always used this:

# Example: Take the address (4 bytes) and data (1 byte) in this case
vals = [0x60, 0x00, 0x12, 0x14, 0x01]

# Sum with 7-bit wraparound
accum = 0
for val in vals:
    accum = (accum + val) & 0x7F

# Checksum is lower 7 bits of the difference w/ 128
cksum = (128 - accum) & 0x7F

Your post is not doing a difference with 128.
5
Now that I've re-read the sources, this is what I used to put a Katana into edit mode:

0xF0, 0x41, 0x00, 0x00, 0x00, 0x00, 0x33, 0x12, 0x7f, 0x00, 0x00, 0x01, 0x01, 0x7F, 0xF7

And this should cancel edit mode:

0xF0, 0x41, 0x00, 0x00, 0x00, 0x00, 0x33, 0x12, 0x7f, 0x00, 0x00, 0x01, 0x00, 0x00, 0xF7

Given how many times I stuck my foot in my mouth during my participation in this thread I'd appreciate someone else reviewing this post for correctness.

6
Try sending F0 41 00 00 00 00 3B 12 7F 00 00 00 01 00 F7

Is that 00 in the right position?

Sending "F0, 41, 0, 0, 0, 0, 3B, 12, 7F, 0, 0, 0, 0, 1, F7" didn't do the trick, neither did "F0, 41, 0, 0, 0, 0, 3B, 12, 7F, 0, 0, 0, 1, 0, F7"

I'm off to bed now; the hunt continues tomorrow!
7
Boss eBand (Micro BR 80, JS-10, JS-8) / BR-80 user patches backup
« Last post by blackfire74 on Today at 12:52:28 PM »
Hello
is there a way to create a backup of user sounds patches? I had create some nice sounds but I'm aware of loosing them when something wrong happens, but writing them down in a notebook is a quite a job, too much data.
8
41 00 00 00 00 3B is the identifyer for Boss MS3
12 means write data (11 is data request)
7F 00 00 00 is the address
00 is the data
01 the checksum (80 - sum of data and address: 7F + 00 +00 +00 +00 = 7F, 80 - 7F = 01

Try sending F0 41 00 00 00 00 3B 12 7F 00 00 00 01 00 F7

And you are of course correct - I'll delete my earlier, misleading posts.  Sorry about that!
9
Most of these units are at $699. If I had a few of these for sale I would update them myself, otherwise you would be selling an inherently inferior product once updates are no longer available.
10
I think modifying playing technique as suggested by plethoraguy will help deal with the artifact noises, which are very annoying.  I have been searching for a way to set the various TP settings to minizme these noises but there's nothing that seems to deal with them directly. If anybody has discovered optimal settings, let me know!

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