David, this is freaking cool! I had asked about something like this, but never got a response.

As a fellow D-110 user, I would be VERY appreciative if you could send this to me/upload it!

@davidhs - I like what I hear. This is a very exciting addition to the Munt project!

Do you by chance have have source repo where you can share your updates?

I'm very interested in this also! I was just thinking of buying a D110 but this could be the next best thing 🙂

Great stuff! How did you manage to extract the demo song from the synth? I used to have a D-110 years ago but noticed the Midi OUT was disabled when playing the demo songs.

Demo songs are clearly visible in the control ROM dump. They reside in the higher addresses of R15179873, e.g. "Macho Memory" starts at 0xB000.

From a quick look, the tune starts with a 16-byte title, then goes 16 bytes of system area (?) and the 256-byte patch dump, and then a stream of timestamped MIDI messages likewise from a SMF track go afterwards.

Thanks for all the positive response.

This is actually something I made because from what I knew, D-110 have very similar synth structure as an MT-32, so I gave it a try.

Turns out it works quite well, and it sounds beautiful as well. Although to make it the most complete, I still don't know how to parse the reverb chip ROM dump I found in the Internet (I'm sorry I forget what is the name of the file), so that the reverb settings are at most accurate from the device itself.

I also need to modify the current Munt code to support D-110 "patches", i.e. the reverb and partial reserve settings.

@Spikey, sorry I'm currently still unable to reply to your PM, it says that I am still a new registered member.

sergm wrote on 2020-10-29, 19:24:

From a quick look, the tune starts with a 16-byte title, then goes 16 bytes of system area (?) and the 256-byte patch dump, and then a stream of timestamped MIDI messages likewise from a SMF track go afterwards.

Hi, sergm!

The 256 byte data in the start seems to be some kind of patch map settings, but I'm still not sure what setting it sets.

krcroft wrote on 2020-09-29, 15:35:

@davidhs - I like what I hear. This is a very exciting addition to the Munt project!

Do you by chance have have source repo where you can share your updates?

Thanks, krcroft!

I have a github account, but the changes aren't uploaded to my repo yet, as I'm still currently busy WFH..

I also still need to implement the D-110 "patches" memory and I also need some help parsing the reverb settings from the ROM dump, because it has more reverb settings than the MT-32.

davidhs wrote on 2020-11-02, 17:50:

Thanks for all the positive response. […]
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Thanks for all the positive response.

This is actually something I made because from what I knew, D-110 have very similar synth structure as an MT-32, so I gave it a try.

Turns out it works quite well, and it sounds beautiful as well. Although to make it the most complete, I still don't know how to parse the reverb chip ROM dump I found in the Internet (I'm sorry I forget what is the name of the file), so that the reverb settings are at most accurate from the device itself.

I also need to modify the current Munt code to support D-110 "patches", i.e. the reverb and partial reserve settings.

Well, adding support for D-(1)10 synth requires quite a bit of changes. There are more ROMs involved, more timbre banks, etc. And I'm completely unsure whether the MT-32/CM-32L emulation model is remotely correct. Studying that requires an effort. Perhaps, easier is to go another way and emulate the MCU fairly for other synth. Really, today computers are even faster, so full-blown emulation may be more desired being accurate but slower. For instance, MAME/MESS already has implemented the MCU model (albeit the sounds hardware is still missing 😒). I guess the speed is more valuable for gaming, so probably mt32emu will remain a HLE (e.g. the measured speed of reverb emulation was 20 times faster in mt32emu when I tested).

Also, speaking of reverb, if you are interested in how the reverb chip presumably works, don't hesitate to look at the BossEmu thingy. It is already capable to work with some more reverberation stuff other than MT-32 and the likes. This is probably most important difference comparing to the mt32emu emulation model, as the D-(1)10 units have the number of reverb modes doubled, AFAIK 😀

Davidhs, feel free to (and please do!) email me at NOSPAMagillett@sierramusiccentral.comNOSPAM (remove the NOSPAM's, of course 😉 ).