Advanced Mac Substitute is an API-level reimplementation of 1980s-era Mac OS
by zdw on 4/11/2026, 3:39:19 PM
https://www.v68k.org/advanced-mac-substitute/
Comments
by: imoverclocked
I can't imagine how fast this is compared to the original hardware that ran it. I remember using a Mac 512k with a single floppy drive (no hard drive support) and doing the insert-floppy-dance. Computers were far more mechanical then.<p>It would be fun to have a "slow it down" feature that also has the various floppy read/write noises paired with it. Bonus points for different generations of hardware and having the OG HD noises to pair with those too!
4/11/2026, 5:27:12 PM
by: Batbird
This triggered flashbacks. I'm not sure if I'm remembering correctly, but I think we sometimes also used used Pascal, and it was optional for some toolboxes. It's been a long time though so I could be mistaken. That might have been pre-Mac? But good times, though. Boy, is the world a different place.
4/11/2026, 5:27:43 PM
by: hyperhello
I'd like to see something like Carbon for old apps so that they boot in modern window frames (without the missing Tahoe corners) and can save to files.
4/11/2026, 5:17:55 PM
by: shermantanktop
But will it run Dark Castle??<p>Many hours were wasted on that game.
4/11/2026, 5:11:30 PM
by: davidfstr
Wine for classic Mac OS? Amazing. Well done.
4/11/2026, 4:51:52 PM
by: hagbard_c
<p><pre><code> make ams-vnc ./build.pl -i exhibit graft skif minivx xv68k freemountd listen vnc-interact ... Daemon starting up... done. T=0.037s ERROR: OpenDF is unimplemented </code></pre> Hm, doesn't seem to work. Let's try the X11 version:<p><pre><code> make ams-x11 ./build.pl -i exhibit graft skif minivx xv68k freemountd interact-x11 ... T=0.275s ERROR: OpenDF is unimplemented </code></pre> Nope, it seems to be missing something. OpenDF? All I find is this: <a href="https://github.com/PrjEnt/OpenDF" rel="nofollow">https://github.com/PrjEnt/OpenDF</a>, a long-abandoned project which seems to be a more compact version of another abandoned thing.
4/11/2026, 5:21:22 PM
by: azinman2
This is quite the feat. I’d love to know more about the process to make this, the motivation, how much time was spent, etc.
4/11/2026, 4:25:39 PM
by: homarp
how does it compare to executor? <a href="https://en.wikipedia.org/wiki/Executor_(software)" rel="nofollow">https://en.wikipedia.org/wiki/Executor_(software)</a>
4/11/2026, 4:28:11 PM
by: homarp
related discussion <a href="https://news.ycombinator.com/item?id=40338443">https://news.ycombinator.com/item?id=40338443</a>
4/11/2026, 4:30:45 PM