Thread by @TubeTimeUS

i got something interesting in the mail! what could be inside, i wonder. 🤔

fan mail! thank you so much for the kind words, Matthew!

there's more inside the box...

it's a MIDIMAN! this little card is compatible with the MPU-401 MIDI card from Roland and lets you connect your computer to a MIDI keyboard or sound module (such as the MT-32).

the microcontroller is an 8031 with a separate EPROM containing the firmware. there's no code protection at all and these are easy to dump. *checks* aaaand someone has already dumped it.

i was going to get the wiring for the adapter cable but that's also been documented on the internet.
vogons.org/viewtopic.php?…

now all i need is a roland soundcanvas or an MT-32, haha.

so...what's up with the composite video output?

just kidding, this is for audio. it's got a metronome!