Everything about MacMach
Computer operating system
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. Wikipedia →
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