Project Genie pioneered several computer hardware techniques, such as commercial time-sharing which allowed end-user programming in machine language, separate protected user modes, memory paging, and protected memory.
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This increased Macintosh memory capacity at a performance cost, but did not add protected memory or prevent the memory manager's heap compaction that would invalidate some pointers.
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Protected memory ( which can be seen in action with the included Process Manager application ) which protects against the whole system crashing when a single program does.
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They all support processes and threads and files and protected memory and IPC and network sockets and a bunch of GUIs that all work just about the same.
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And then there is the dreaded Boza virus, which an alarmed reader informed me is " the first virus that directly infects the 32-bit protected memory Windows environment ."
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As the stability of the operating system collapsed, the ready answer was that Taligent would fix this-it was fully reentrant, truly multitasking, and made heavy use of protected memory.
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They could also communicate with the kernel to spin off separate applications or threads, which would run as separate processes in protected memory, as in most modern operating systems.
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In addition, Mac OS 8 still lacks the ability to run programs in protected memory spaces, which reduces the chance that the crash of one program will take the whole system down.
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For example, during deployment of vPro PCs, security credentials, keys, and other critical information are stored in protected memory ( not on the hard disk drive ), and erased when no longer needed.
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The Professional MachTen branch, intended for virtual and protected memory models ), but takes full advantage of the PowerPC processor and is compatible with Mac OS 9 through its final version, 4.1 . 4.
