Nothing at all? 😁
Did not expect such lack of interest
Or did I miss something?

The build quality looks great and the youtube videos sound nice. Do you plan to add SPDIF output at 44.1 Khz?

Hi! Is this different from RetroWave OPL3 Express (previously the RetroWave OPL3) ?

DosBox-X already have support for it too...

sofakng wrote on 2022-10-31, 00:33:

Hi! Is this different from RetroWave OPL3 Express (previously the RetroWave OPL3) ?

DosBox-X already have support for it too...

Thanks for the info, didn't know about it.. I made a research about something similar when started the OPi and there was no such thing

Strange that it looks ridiculously similar indeed, but it lacks line input as I understand

At least now it became clear that OPi is not something new

Nice.
I have the original RetroWave OPL3, and while it does the job (in DOSBox-X), the lack of integrated audio mixer for PCM sound is a major nuisance.

Lovely design. The integrated mixer is an excellent touch.

I concur, really neat design and features, well done.

(also - and slightly off topic - that's insanely cool what they're doing with Adlib Tracker these days - my OPL3 music didn't usually sound like that in the 90's!!)

I quite like it. But as a Japanese speaker, I can't read the this topic without laughing as "Oh-pai" = "boobs" in Japanese. 😀

I never visit Vogons without learning something interesting.

this is neat! brings emulation closer to the real thing 😀

it needs a jumper though: "thinking noises" ON/OFF 🤣

SuperDeadite wrote on 2022-11-01, 04:58:

I quite like it. But as a Japanese speaker, I can't read the this topic without laughing as "Oh-pai" = "boobs" in Japanese. 😀

I like it! And my wife also prefers the Japanese reading 😁

Shreddoc wrote on 2022-11-01, 01:18:

I concur, really neat design and features, well done.

(also - and slightly off topic - that's insanely cool what they're doing with Adlib Tracker these days - my OPL3 music didn't usually sound like that in the 90's!!)

BTW these youtube videos I filmed for suzb3ro (the creator of Adlib Tracker) and offered to send him a prototype to try it out himself. Incidentally he was very sceptical about it and stopped answering e-mails. A similar story was with RAD creators, who also refused to take the proto and said they are not interested. Which was very strange and unexpected, considering these are THE people who still very much into OPL FM on modern systems. Actually this made me to abandon the project in 2021, because I thought if they (!!) are not interested, then who will be?

Stretch wrote on 2022-10-30, 23:56:

...Do you plan to add SPDIF output at 44.1 Khz?...

Thinking about it. Currently I'm also working on stereo version of Blasterboard and actually making an SPDIF out for it, so if that will come out production-cozy, then why not.

keropi wrote on 2022-11-01, 07:11:

this is neat! brings emulation closer to the real thing 😀

it needs a jumper though: "thinking noises" ON/OFF 🤣

There actually was such kind of jumper in revision a pcb 😁👍

LABS wrote on 2022-10-30, 22:58:

Nothing at all? 😁
Did not expect such lack of interest
Or did I miss something?

I'm always interested in such efforts. Money to actually buy the finished product, on the other hand, is an entirely different matter. 😁

So, some (hopefully helpful) questions:

1. Do you have a command that allows you to issue a reset, eventually asserting IC# on the OPL3? With the number of sloppy timing routines out there, and the fact that this is now being done over USB, that will likely be a handy feature at some point. Of course, since it is a USB device, another solution could just be to unplug the device briefly, but I always prefer an elegant method of resetting a device, and the number of sound cards that don't have one is surprising.
2. Are you planning to include the connected sound card's output in an eventual S/PDIF signal? Have you chosen an ADC for that purpose yet?
3. If you want to keep the OPL3 signal fully digital, rather than OPL3-DAC-ADC-encoder-S/PDIF, wouldn't you be better off with a YMF289?

640K!enough wrote on 2022-11-02, 03:25:

I'm always interested in such efforts. Money to actually buy the finished product, on the other hand, is an entirely different […]
Show full quote

LABS wrote on 2022-10-30, 22:58:

Nothing at all? 😁
Did not expect such lack of interest
Or did I miss something?

I'm always interested in such efforts. Money to actually buy the finished product, on the other hand, is an entirely different matter. 😁

So, some (hopefully helpful) questions:

1. Do you have a command that allows you to issue a reset, eventually asserting IC# on the OPL3? With the number of sloppy timing routines out there, and the fact that this is now being done over USB, that will likely be a handy feature at some point. Of course, since it is a USB device, another solution could just be to unplug the device briefly, but I always prefer an elegant method of resetting a device, and the number of sound cards that don't have one is surprising.
2. Are you planning to include the connected sound card's output in an eventual S/PDIF signal? Have you chosen an ADC for that purpose yet?
3. If you want to keep the OPL3 signal fully digital, rather than OPL3-DAC-ADC-encoder-S/PDIF, wouldn't you be better off with a YMF289?

Hi, 640K!enough!
Thanks for your interest

1) Yes, there is an OPL3 reset command of cause. The opifm.dll library provides API for controlling OPi. It also allows sending OPL3 commands by one or to form a command queue and send it as a packet (used for sending commands that should happen at once like a single row of events in Adlib Tracker). OPi also upgrades firmware over USB. Here is a header for opifm.dll with API commands at the end:

2-3) I'm thinking of S/PDIF out, but for the mixed analog signal (OPL3 + line) only. Just received UDA1355H, it has ADC and DAC with S/PDIF in both paths. Actually I'm going to try it for stereo version of Blasterboard and to convert CD-ROM digital out to analog and then to send all mixed analog sources together to S/PDIF via its ADC. Never worked with S/PDIF before, will see.