Some notes
There is one toy OS that did premptive multitasking before OS/2, that is Amiga Workbench. Thought since it didn't have memory protection it still belongs in the category of toy OS.
There is one toy OS that did premptive multitasking before OS/2, that is Amiga Workbench. Thought since it didn't have memory protection it still belongs in the category of toy OS.