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posted a new shorts video above

I added my computation of values needed for the programming of the Sound Driver in a TD resource. https://tinkerdifferent.com/resources/sound-driver-reference-values-for-musical-notes.172/

The Sound Driver predates the Sound Manager. Sound Driver: original ROM routines from the Mac 128 to the Mac SE or so, still present in System 6.0.8 and early versions of System 7 for compatibility reasons. Sound Manager: started appearing in System 6.0.x and promised to manage snd resources...

*UPDATE for my project on March 8th: I started a thread about it: https://tinkerdifferent.com/threads/digesting-midi-in-with-c-on-68k-macs-video.5134/

If you feel like this thread looks like a previous one I made, then you're right. I made a separate post for MIDI out, but this is about MIDI in. Quick difference primer: MIDI out: the mac produces MIDI out commands through code or through parsing a standard midi file, sends them on a...

How do you propose to check for distortion? Send a pure sustained sine wave through the Sound Driver's 4-tone synth and check the output at each transitor on a scope, and look for sinus impurities?

I just stumbled upon this resource: found here on TD: https://tinkerdifferent.com/resources/mac-cable-check-manual.148/ that's gonna be my next attempt.

ok, those are good avenues to test. -12V seems like the low hanging fruit, I'll check my external floppy drive port, I think? How do I test these transistors? The sound chip is UE10, correct? This is what I have that I think is the most relevant schematic page for the SE/30

This SE/30 has been logic board recapped around 2019, it was my 3rd or 4th ever soldering job and I did a passable job of it with tantalum caps. Its analog board has yet to be done as well as the power supply. It's been a stable workhorse and I've even left it running for days uninterrupted for...

TODAY’S THE DAY. Return to Dark Castle launches at 10:00 AM PT on Steam and the Mac App Store. ⚠️Day-one momentum matters!!!! • Grab the game (25% off launch discount) • Leave a review (critical for visibility) Steam: https://store.steampowered.com/app/4054940/Return_to_Dark_Castle/ Mac...

I'm glad you figured it out! The next step I took was to use a portrait monitor video screen, gives real good screen estate for coding in Symantec C++ 6.0.

I was exactly where you are a few days ago: check this post, and its linked collection. the video ROM is in the same folder as the machine's folder: https://tinkerdifferent.com/threads/roms-for-snow.5089/

Space Quest III

I've been migrating my development into Snow (from Basilisk II) and I'm having a ball. I'm working on MIDI in and out stuff so I've started to pay attention to how it deals with the serial ports: * it can use a host machine TCP port to send/receive data from/to its emulated serial (modem...

I simply copied over your AFP drive's AppleTalk BBS folder and found the BBS software .sit there, in pristine shape.

figured it out

I've tried to get set up on my SE/30. I took both the file from your website guide and even tried connecting to your AFP on globaltalk itself, and I think I found the same file inside your ApplePi drive. both lead me to unstuff Black Knight CN.sit and get this seemingly broken single .sit file...

1st demo is up with a Snow dev environment:

Fresh C code for my old Mac Plus: I did a proof of concept back in August 2025 or so: I'll: * Revisit and improve that code * Establish a link between MIDI in and various sound destinations: spit back in MIDI out as low hanging fruit, but also send to the Sound Driver: square wave synth, 4...