Replies: 14 comments 132 replies
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I also have the Sony v77. really cool fx unit. They never published any sysex documentations unfortunately so the only way would be to decipher how a program dump is constructed (byte position for which parameter etc) and update the value with cc quick controls by updating the corresponding byte that stores the corresponding fx parameter it controls and its corresponding value. Big headache to come... I did that for the Yamaha spx 990 900 and 1000 and it took months to do it step by step. I also tried to get inspiration from the v55 but it's newer and they implemented the sysex messages differently. I'll try to contact Sony JP, maybe they will release it if we insist idk. I would be glad to help you, but it will take a lot of time. I'll post some notes I have about the v77 midi if I find them. But they are very limited unfortunately. Damien |
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Thanks a lot. |
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MIDI_Exclusive_data_format.pdf Is the v55 structure of preset dumps the same as the v77? |
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similar, i think. The presetname starts after 2 bytes and is 14 bytes long. The next 3 bytes could be the FX typ and stuct-level The V77-FX are also splittet in 5 FX-typs. |
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When values are non linear or let's say 1 is for 50hz, 2 is 70hz etc those fixed values are usually listed as a long string in the firmware. I didn't try yet but if you can find the firmware dump you can read it with an hex editor and you'll find some block with text, values etc that could help with the value mapping. |
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The midi implementation from the dps-r7 and the other siblings can also be a source of information: https://www.manualslib.com/manual/3355638/Sony-Dps-R7.html?page=54#manual |
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First thing would be to locate the byte where the 1st RTC controller is located. Without changing anything but the parameter the 1st RTC is assigned to, save 2 (almost) identical user presets and compare where the byte change. It's the RTC n°1 . From that, just by pushing/pulling this user preset via sysex you can update whatever parameter value with the RTC n°1, a glorious name for CC controller. |
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If ever Sony used the same implementation as in the DPS v55, we would first need to determine the product ID for the dps-v77. You'll get it from the header of your program sysex dump, it's the 4th byte of the file. If the messages are the same as the DPS-v55m, this is the Parameter value request for FX block 1, param 1: You should get a response such as : F0 4c productID 20 00 00 0V 0V 0v 0v F7 With the value as 4 byte nibbles for a 16bits value (0V 0V 0v 0v) , it should correspond to what you have on your screen for this particular parameter. 20 is the command for param value If you get the param value right that's really good sign that it's going to be much easier (still complicated though) than I thought. |
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That is a very good idea. |
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I can't try on my Sony RN but let me know if you get a response if you send a param value request ;) |
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Hi @Tonfisch I started to write code for a DPS-R7 but found the manual extremely confusing. I was able to dump all the presets and found that they each have different dump sizes, I presume based on what algorithm they use. I got confused with their explanation of check summing.
Clear as mud! Anyway, I plan to slowly unravel what it's all about. In the meantime I wrote a function for unpacking the crazier-than-Korg bit packing system. I think it works.
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ahah I'm doing the exact same for the sony DPS-v77 right now :)
I have the first one, it's a good start ! |
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Hi @damiensellier ,
Yes |
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Test-Panel-Sony_DPS_V77_V3.zip |
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That's cool! you're a step ahead of me.
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thanks, that's a helpul info. |
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Can you tell me more about this EPROM dump business and how do you go about doing it? |
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This is not from the eprom. If there is no file arround its a not so easy job. Get the physically Eprom out of the hardware device. Get the right hardware reader for the type of eprom and the right program for the reader. But on the site damian mentioned, there is a massive amount of readouts. |
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Thank you! |
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This is the sysex messages I found so far : Startup Ready (DPS > Panel) Panel Keys & Shuttle Jog Fine "-" (DPS > Panel) Jog FIne "+" (DPS > Panel) Jog coarse "-" (DPS > Panel) Jog coarse "+" (DPS > Panel) Panel Keys (DPS > Panel) DUMPS Prg Dump (DPS > Panel) [U1, U2, U1+U2, All ], [Prgrm 01, 02 etc] Prg Dump Request (Panel > DPS) Commands : Parameter value request (Panel > DPS) Cmd 13h (19dec) ??? Cmd 13h (19dec) ??? Cmd 21h (33dec) ex : ex: Cmd 25h (37dec) ex : Cmd_40h (64dec) | Prg Jump Request (Panel > DPS) acts as a MIDI Prgrm Change Cmd 75h (117dec) ??? ? ex : Cmd 77h (119dec) ex : |
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Hello, hope you're doing alright! I'll test your latest panel tonight for sure and will give you a report about it ;) |
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Hi @Tonfisch , I tried your panel tonight with CtrlrX 5.6.34 on Cubase 12 and it seems to work way better than the previous version. |
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Hi @damiensellier, happy to hear that. |
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Awesome! Yes I really liked the quality of the FX. There's some weird FX presets too, the guys at Sony went deep when they programmed the presets. I also have the Little brother Sony HR-MP5. It has less memory for the delays but has the same algos and the presets are even better IMHO. I'll check If I can convert the HR-MP5 presets to the DPS-V77. |
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Thanks for that - things to remember when I finally get around to writing a panel for the DPS-R7. |
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Very impressive- I want to see if I can adapt this to the DPS-R7 |
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i'm trying to catch up with what @Tonfisch found. I'm still trying to figure out what he uploaded, the way the parameter values are passed from the DPS to the panel on request is quite a mystery still. I put 3 blocks on my panel to check if randomly I get long sysex messages from the DPS, and to narrow it down to something logical. But it's just a beginning, that's encouraging. i don't understand why the header of the sysex message has 01 after F0 4C 00 15 01 and before the command type code. |
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5th byte "01" is actually 0000dddd for 0d where dddd = Device ID (Base MIDI Channel) number. (according to Ensoniq sysex message headers) |
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Here's another panel I was working on - decoding the LCD display.
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That's nice! I did not thought about messages providing the actual letter maybe there's something like this too on the DPS-V77 I need to check that too. That's a giant maze we're diving in :) |
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Was the chararcter lookup table in the manual? |
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It's from a while back so I'd have to look at the code again, but the ascii mapping seems to be: sony_ascii_mapping = {
[0] = {"0", " ", "P", "O", "p", " ", " ", " ", " ", "\\", "/", " ", "["}, --0
{" ", "!", "1", "A", "Q", "a", "q", " ", " ", " ", " ", " ", " ", " ", "]"}, --1
{" ", "'", "2", "B", "R", "b", "r", " ", " ", " ", " ", " ", " ", "Q", " "}, --2
{" ", "#", "3", "C", "S", "c", "s", " ", " ", " ", " ", " ", " ", "W", " "}, --3
{" ", " ", "4", "D", "T", "d", "t", " ", " ", " ", " ", " ", " ", "S", " "}, --4
{" ", "%", "5", "E", "U", "e", "u", " ", " ", " ", " ", " ", " ", "U", " "}, --5
{" ", "&", "6", "F", "V", "f", "v", " ", " ", " ", " ", " ", " ", "a", " "}, --6
{" ", "", "7", "G", "W", "g", "w", " ", " ", " ", " ", " ", " ", "c", " "}, --7
{" ", "(", "8", "H", "X", "h", "x", " ", " ", " ", " ", " ", " ", "d", " "}, --8
{" ", ")", "9", "I", "Y", "i", "y", " ", " ", " ", "C", " ", " ", "n", " "}, --9
{" ", "*", ":", "J", "Z", "j", "z", " ", " ", " ", "E", " ", " ", "o", " "}, --A
{" ", "+", ";", "K", "[", "k", "[", " ", " ", " ", "F", " ", " ", "q", " "}, --B
{" ", ",", "G", "L", ".", "l", "]", " ", " ", " ", "G", " ", " ", "s", " "}, --C
{" ", " ", "=", "M", "]", "m", "]", " ", " ", " ", "H", " ", " ", "u", " "}, --D
{" ", ".", "O", "N", " ", "n", "]", " ", " ", " ", "O", " ", " ", "y", ">"}, --E
{" ", "/", "?", "O", " ", "o", " ", " ", " ", " ", "P", " ", " ", "z", "<"} -- F lsb DOWN
-- nsb ACROSS
}
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I probably got it from this diagram in the service manual :
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Thanks for the manual, that's interesting because the DPS-V77 has no midi docs. Apples don't fall far from the tree, there's good chance the DPS-V77 sysex was inspired by the previous generation. |
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That's going to make it hard! |
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Midi info looks good. Thanks |
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Looks like i also accounted for the weird glyphs they added to the character set:
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Did you create a matrix typefont for that? |
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I must have discovered that you can actually create an image in JUCE where blk is a pixel size?
so it's not a Ctrlr resource for i = 0, count_t - 1 do
if t[i + 1] == 1 then
g:drawImageAt(image,push+(x * padding), push+y, false) -- nicer antialiasing
--g:fillRect((x*padding), y, padding, padding) -- very stark and sharp
end
end
then I presume loop through the ascii table mentioned and paint each image into the component. Had forgotten about that.
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Are all those glyphs on the DPS-V77 display? |
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I think Sony improved on the V77, it's more of a dot matrix display with drawings letters etc it has way more sprites than the one in the table you posted. |
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I am wondering if this is the correct checksum algorithm for Sony (for the DPS-R7 at least)? 
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I think you only need the check sum for the transmission of all Presets, to the R7? That would be the same as with the V77. |
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I do have an R7. I must check it out. Just got to get around to it 😆 Thought I would post it here in case it has been a stumbling block for you with the DPS-V77. |
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Thank you. |
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Hello,
i search for infos about sysex-communication.
What i found was only a user manual, effect parameter, and a servicemanual.
What helped a little was a pdf ,"MIDI_Exclusive_data_format" for the DPS-V55.
I can now read presets, a kind of parameter map, single values and systemdumps.
What i search ist the description for the dump values and the parameter types.
Is there some more info out there?
manny thanks
Tonfisch
Example: part of the parameter map/ label:
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