Maybe I&#x27;m missing something, but I can&#x27;t see where it states that SymbOS provides <i>preemptive</i> multitasking. The facts page [1] states that &quot;<i>I want to give everything to SymbOS what a modern OS needs. Real preemptive Multitasking, a dynamic memory-management for up to 576K and more.</i>&quot;, but thats not the same as it actually having it. I can&#x27;t actually see how preemption would be possible on a Z80. Have I missed something?<p>CLiPS (on the same site) appears to support preemption [2], but that requires a C64. I don&#x27;t know how that is achieved.<p>Very impressive work nevertheless.<p>[1] <a href="http:&#x2F;&#x2F;www.symbos.de&#x2F;facts.htm" rel="nofollow">http:&#x2F;&#x2F;www.symbos.de&#x2F;facts.htm</a><p>[2] <a href="http:&#x2F;&#x2F;www.symbos.de&#x2F;mirrors&#x2F;www.clips64.de&#x2F;details.htm" rel="nofollow">http:&#x2F;&#x2F;www.symbos.de&#x2F;mirrors&#x2F;www.clips64.de&#x2F;details.htm</a>