silent

That is good enough! As long as the emulation core is accurate, and open source, and it's not boring.

ah, alr. I will try this again, I was having a hard time getting it smaller even with compression

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It kinda sucks that there are not any open source emulations of Casios PD and iPD synths. Maybe someday? Even an emulation core of the sound source itself would be good

Now I know! Thanks! (btw, how do you get that high quality image in the tiny size requirements?)

Greetings I am looking for some accurate and open source emulation cores of casio synths, iPD and older. If you can find them, please provide links to them in the replies to this post. If you've made one and are willing to allow it to be used freely, please also share it here. Thanks!

Hey! Dear visitor! Please note that a lot of these modules are very rare! (And also I am now counting Rackmount Modules) While I myself are looking for and listing them as I find them (I should make a post with the ones I do find and edit it as I go.), I am only one person, I can't really do this by myself very well. (please do not try to read this sentence too much) You know what, this post is the one that gets the list, I don't want to make a separate post just for the stupid list. This will be marked as the solution so it's easy to find. GZ-50M GM sound module, rather small. GZ-70S GM MIDI speakers, Japan exclusive GZ-30M smaller GZ-50M and also Japan exclusive. WP-150 PCMCIA midi module, similar to the GZ-50M VZ-10M Uses Casio's wonderful iPD sound source. It's a VZ-1 but as a MIDI module. You can link multiple of these together to create a larger, more complex synth. CSM-1 Casio Sound Module. It was an older one that came out in the 80s. Also, Japan Exclusive AFAIK. CSM-10P a CSM-1, but only for certain instruments, might have been designed to be paired with the CSM-1. It's a piano module. VZ-8M Essentially half a VZ-10M in multiple ways. Could connect to the VZ-10M and VZ-1 synths to give them more functionality.

Casio happens to have a few desktop midi synths and sound modules. I've listed a few of them in the solution, but I was wondering if there are more I don't know about. Feel free to share what you know about them! I've been looking for a VZ-10M btw, if you happen to find one up for sale, I would appreciate hearing about it. Thanks!

They're similar, they're both DSP chips, they're proably jsut running different DSP masks. Though it is possible that the limits it has *are* hard limits. seeing as the MZ-2000 had to use 2 DSP chips to get it's functionality.

Sometimes on DSP chips, you can set up various different versions of chips. While the GT-155 and GT-155F might be the same base DSP, functionally they're completely different. It's also possible that any data I do have on it from googling it is completely incorrect and that the GT-155 is just the GT-155F without the ability to program user tones and/or load them from floppy. I strongly wish that there was more useful information on things like this. I would still count it as hardware and not a full on softsynth as it is using a deticated DSP chip to do the things. So it's possible the DSP has a few different program masks that change what it can or can't do, what the pins do, etc. And the GT-155F is the identifier of the mask for the wavetable synth. As far as I am aware the GT-155 and GT-155F are not pin compatible. Why does this have to be so confusing, I've spent months or more trying to figure out this thing and every place I look I just get more confused.

Well, neither of these are correct. It thinks the GT-155F is a completely different chip. They both might be using the same base but configured differently. It is a dedicated DSP chip. Confusing stuff is confusing.

https://www.jotrin.com/product/parts/GT155F https://www.jotrin.com/product/parts/GT155_HG51B155FD_ idk what one is in the WK-1800 currently, let me check

I am now confused which one is which, I might need to look at the chips in my Casio again.

I don't think so, I need to check.

The GT-155F (not the GT-155 which is a camera chip) is a 32 DCO wavetable with independent envelopes, panning, LFO?, volume, and filter per DCO. Each voice can use 1 or 2 DCOs (Polyphony is reduced when using multiple DCOs together, but tone complexity is increased) There's some other things I need to look into on this synth to see what it can or can't do, but it sounds good already. This was recorded from a WK-1800. I might re-record this on an MZ-2000 for comparison when I have an MZ-2000 in my posesion. (I do not have an MZ-2000 yet) And should provide a good example of what the GT-155F sound chip sounds like.

ZPI is also wavetable, but it's more complex than A2 and has more features. Some ZPI synths use two DSP chips, one for the synth engine and one for effects.

That would be a cool mod to do. (btw you can change the DAC modes too) I was thinking of getting a second WK-1800 and making a custom PC MIDI synth box out of the internals. Maybe putting some larger ROMs with the same pinout and allowing you to load things from the PC itself. As well as allowing you to fully control it from the computer. But I do not want to try reverse engineering it, and writing software, and drivers, for it. Maybe someday tho? For now, I just connect my WK-1800 to my PC via MIDI. Would be cool tho to have it in a midi box. (I *think* Casio actually made one)

ZPI is wavetable with special morphing and interpolation. (and some other cool stuff like envlopes)

I have a Conn new Caprice home organ, it needs some cleaning and repairs but it still works

Some people are selling theirs, good luck to you!

a commenter on the video I posted has one and might be selling it as of when they commented, idk if it's still around

Yeah that and the fact they just uhh.... well... maybe didn't even know what it was

I assume the GT-155F's voices are layed out something like this: Voices: 1 2, 3 4, 5 6, 7 8, 9 10, 11 12, 13 14, 15 16, 17 18, 19 20, 21 22, 23 24, 25 26, 27 28, 29 30, 31 32. Tone Paramaters (this is the things that would be set up in the WK-1800's Synth mode) (Notice how I separated the pairs of voices with commas, that's because they can be combined by the tone being used) DSP: ALL Channels (10 modes) Voices are assigned left to right AFAIK and the latest note played/triggered gets priority (sadly there's no way to override with hold-down or sustain that I know of) while the oldest notes are the most likely to get cut to make room for the newest notes. The thing is though, the synth still tries to play all the notes when playing a midi file with higher polyphony than what it supports, causing it to chug along attempting to play all the notes when it can't. I guess the voice reassignment isn't superfast. And also sending that much MIDI to it probably lags the CPU a lot. ZPI, such as on the MZ-2000 (which is what it debuted on) can do twice what A2 can do

Some extra notes on A2 - A2 has envelopes (Attack, Decay, Pitch, Volume) - The WK-1800s DAC might have several hardware modes (have fun with that!) - The A2 sound chip (GT-155F) is undocumented as far as I'm aware, and any potential documentation leads to the homepages of the manufacturers websites - It might have some small samples here and there for some things (Drums, possibly some fairlight samples) - A2 can combine two voices/DCOs together, allowing for more complex tones at the cost of polyphony - A2 does not have portamento, and can't dynamically change panning while a note is playing (As far as I know, which is why tones that do, use two DCOs) - A2 has some sort of filter in the DCO parameters, but I am not sure what type it is, or what it does. so here's essentially what A2 is: Wavetable with envlopes, filters, and DCO pairing. Each voice can use 1 or two DCOs MIDI controlled, with effects being controlled via the midi channels Lots of fun to play around with (I want this thing in a tracker) ZPI is also Wavetable, but it can dynamically morph the waveforms in realtime as well as interpolate them, It also supports samples, more DCO combining (up to 4) a drawbar organ, software that allowed you to make and import your own tones, and some other cool stuff.

It's a cool keyboard. Maybe some people on this forum could provide links to where one could be purchased?