Sequential Circuits debuted the MIDI standard in 1982 with their Prophet 600 synth.
The first interface was released by Sequential the same year for the Commodore 64 computer. The Yamaha CX5M was the first computer designed for music, and it used the Sony MSX computer.
It really caught on with the Atari ST computers because the owner of Atari's son had the bright idea of including MIDI on the ST.
I never had an ST, but I had a MIDI interface for my Amiga. The friend I mentioned made one for his Acorn Electron. I think it just adapted the serial interface on that. 40+ years on I'm still playing with that stuff. My Casio CTK-530 keyboard must be at least 30 years old.
Do you remember what model/brand the one for your Amiga was?
But that's awesome that your Casio still works.
I often wonder about modern electronics, and how they will hold up over decades.
My Bose Companion 2 speakers/subwoofer are probably about 18 or 19 years old, and still work. That generates a lot of heat because it has a built-in amp. I forget when they banned lead solder, but it definitely lasted way longer.
I had an Amiga 500 and then a 1200 that got expanded a lot. Some components will fail eventually, especially capacitors and backup batteries. I don't know if more recent devices will fare better. I've got a few old electricals that still work.
Oh I meant the MIDI interface for your Amiga.
Did you mean that you adapted the Acorn midi interface for Amiga?
Ah! I really don't remember as it was so long ago.
In my project, I'm covering this one. But Steinberg is also kind of a huge deal in digital music in general so I doubt you'd forget if it was this one.
Actually I am wondering if I did have a MIDI interface then as I don't think I had any MIDI gear. I think I may have had a sampler instead. It's so long ago...
BTW Did your image come from here? I'd not seen that site before and it brings back some memories. I ended up with a 1200 with lots of add-ones including a 68040 board.