Quatros Quatros: A Preemptive Multithreaded Embedded OS for Education Quatros: A Preemptive Multithreaded Embedded OS for Education Link to conference paper Tutorial and handouts EdSim51 overview slides Intel MCS51 Microcontroller User’s Guide I/O polling vs interrupt slides SDCC tutorial slides Cooperative threads for EdSim51 slides Checkpoint 1 Timer0 for Preemptive threads slides Checkpoint 2 Checkpoint 3 Checkpoint 4 Checkpoint 5 Final Project Soruce Code