https://www.v68k.org/advanced-mac-substitute/

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v68k

An m68k emulator

Advanced Mac Substitute

https://www.v68k.org/advanced-mac-substitute/
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Advanced Mac Substitute icon: A grey desktop and arrow cursor, on a
grayed-out Macintosh
Advanced Mac Substitute

Advanced Mac Substitute is an API-level reimplementation of classic
Mac OS. It runs 68K Mac applications in an emulator without an Apple
ROM or system software.

"But those times are now only legend."
System's Twilight running in Advanced Mac Substitute.
The first level of Lode Runner that it autoplays in its Attract mode
The player is burning a hole in the floor to trap an approaching
guard.
Lode Runner running in Advanced Mac Substitute
The white-on-black title screen of the prologue cinematic from The
Fool's Errand The same title, but with a rain-against-the-camera-lens
effect.
The opening of the prologue cinematic from The Fool's Errand running
in Advanced Mac Substitute
Amazing, a maze-tracing game by Steve Capps When you solve the maze,
a picture appears of a penguin blowing a triumphant note on a bugle.
Amazing running in Advanced Mac Substitute (point to see the solved
maze)

Unlike traditional emulators, Advanced Mac Substitute doesn't emulate
the hardware on which an operating system runs (except for the 680x0
processor), but actually replaces the OS -- so it launches directly
into an application, without a startup phase.

A parody of the Macintosh loading screen.
Welcome to Advanced Mac Substitute.
(This is an application, not a real loading screen.)

Advanced Mac Substitute is a factored application. The backend
includes a 68K emulator and should build and run on any POSIX-like
system. The frontend is a generic bitmapped terminal abstraction
which has been ported to four platforms so far: macOS / OS X, X11,
Linux framebuffer, and VNC/RFB. (Android is a work in progress; a
prototype that runs in Android 4 exists.)

Mac Solitaire running in AMS on an Android phone
Solitaire running in Advanced Mac Substitute on an Android phone

Advanced Mac Substitute is capable of running several applications
written for the original Macintosh computer. Examples include four
games from 1984: Amazing, Solitaire, Missile, and IAGO.

Missile, a Missile Command clone for Macintosh from 1984 Another
incoming ICBM is destroyed, yet many more remain -- including a MIRV
warhead
Missile running in Advanced Mac Substitute (point to see the next
frame)
IAGO, an Othello game for Macintosh from 1984 Game over: White has
beaten Black, 48-16
IAGO running in Advanced Mac Substitute (point to see who won)

Current support includes 1-bit-deep graphics, regions, circles and
roundrects, lines, cursors, GrafPorts, text, windows, controls,
menus, dialogs, and more.

Source

Source code for Advanced Mac Substitute is on GitHub.

If you're feeling adventurous, you can try out Advanced Mac
Substitute in macOS / OS X, the X Window System, a Linux framebuffer
console, or a VNC client.

Still image of monochrome nyancat using patterns instead of colors
Animation of monochrome nyancat using patterns instead of colors
Nyanochrome Cat running in Advanced Mac Substitute (point to animate)

(Older documentation has moved while revision is under way.)

Last updated 2021-10-28 by Josh Juran
Metamage Labs

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