
1) Discontinued operating system
Found on
https://www.crosswordclues.com/clue/uniflex

UniFLEX is a Unix-like operating system developed by Technical Systems Consultants (TSC) for the Motorola 6809 family which allowed multitasking and multiprocessing. It was released for DMA-capable 8` floppy, extended memory addressing hardware (software controlled 4KiB paging of up to 768 KiB RAM), Motorola 6809 based computers. Examples include....
Found on
http://en.wikipedia.org/wiki/UniFLEX
No exact match found.