> Are there any operating systems that still use cooperative multitasking? RISC OS uses cooperative multitasking: http://www.riscos.info/index.php/Preemptive_m

> Are there any operating systems that still use cooperative multitasking? RISC OS uses cooperative multitasking: http://www.riscos.info/index.php/Preemptive_multitasking http://www.riscos.info/index.php/Preemptive_multitasking