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From NitrOS-9
A work in progress
NitrOS-9 is a real-time, process-based, multitasking, multi-user, Unix-like operating system for the TRS-80 Color Computer, Radio Shack Color Computer 2, Tandy Color Computer 3 and Dragon 64. The original OS-9 was created in 1979. NitrOS-9 is the modern equivalent of that OS, and includes advanced features like support for up to 2 MB RAM and 4 GB Hard drive partitions. It is still being developed, and support is available in many mailing lists and forums.
Nightly builds of the project are done and can be uploaded as individual disk images or you can download the entire nightly build in one (large) ZIP file.
