> AmigaOS was cooperatively multitasked That's incorrect, AmigaOS had been fully preemptively multitasking since Kickstart 1.0, in 1985. It took Windows ten ye

> AmigaOS was cooperatively multitasked That's incorrect, AmigaOS had been fully preemptively multitasking since Kickstart 1.0, in 1985. It took Windows ten years to get preemptive multitasking and Mac even longer. You are right that AmigaOS never got protected memory, though.