Lesson plan

MacMach

MacMach is a discontinued proof-of-concept operating system developed by Carnegie Mellon University (CMU). It natively booted the Mach 3.0 microkernel on Macintosh computers, then ran the Mac System 7 and Mac applications as a Mach user-level process. CMU had already invented Mach, which runs the rest of the operating system based on the 4.3BSD Unix personality as a user-space server rather than in the kernel, and MacMach simultaneously adds the System 7 personality. The system virtualizes the classic Mac OS, running System 7 as a contained Mach task to support standard Macintosh productivity software alongside Unix tools. The Macintosh II workstations ran on the same network as the Andrew Project, but did not provide access to the Andrew_File_System and used the Macintosh System 7 windowing system, not the Andrew Window System nor X Window System. With a copy of the Macintosh II ROM stored in a file, MacMach could also run on 68020-based SUN_workstation.

Back to article

Article summary

MacMach is a discontinued proof-of-concept operating system developed by Carnegie Mellon University (CMU). It natively booted the Mach 3.0 microkernel on Macintosh computers, then ran the Mac System 7 and Mac applications as a Mach user-level process. CMU had already invented Mach, which runs the rest of the operating system based on the 4.3BSD Unix personality as a user-space server rather than in the kernel, and MacMach simultaneously adds the System 7 personality. The system virtualizes the classic Mac OS, running System 7 as a contained Mach task to support standard Macintosh productivity software alongside Unix tools. The Macintosh II workstations ran on the same network as the Andrew Project, but did not provide access to the Andrew_File_System and used the Macintosh System 7 windowing system, not the Andrew Window System nor X Window System. With a copy of the Macintosh II ROM stored in a file, MacMach could also run on 68020-based SUN_workstation.

Key claims

  1. release date: 1992 — source: Wikipedia · confidence 0.95
  2. release date: 1999 — source: Wikipedia · confidence 0.95

Discussion questions

  1. Summarise the article in your own words. Which single claim would you verify first, and why?
  2. The record states that the release date is "1992". What evidence would count against this claim?
  3. The record states that the release date is "1999". What evidence would count against this claim?
  4. Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
  5. If two sources disagreed about one of these facts, what would you need in order to trust one over the other?

Bibliography

  1. Wikipedia https://en.wikipedia.org/w/index.php?oldid=1371118864

Key claims and bibliography are generated from the same tracked claims and sources as the article page.