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  • MCU – Timer and Interrupts in LPC2378

    Overview Features of timers in LPC23xx Timer Timer Register Map Example Calculation of time delay Timer Programming This is based on polling method since in while loop it continusly tries to match to a value and on matching moves further Interrupts Features VIC Interrupt structure VIC Register Map How are interrupts processed? Working with FIQ…

  • Real time systems – Resource Allocation

    Overview Assumptions on resources and resource usage How to apply mutual exclusion and critical section on shared resource? Resource conflicts and blocking Impacts of Resource conflicts or blocking Priority Inversion Deadlock Resource access control protocol Non premptive critical protocol Basic Priority Inheritance Protocol Basic Priority Ceiling Protocol Blocking and duration of blocking Example below with…

  • Super scalar processors

    Overview So far in Scalar pipelined processors we had been focusing on reducing the CPI (Cycles Per Instruction). With Super Scalar the focus is going to shift to increase IPC (Instructions per cycle) there by improvement processor performance There are 2 approaches that help achieve this Super Scalar VLIW Dynamic multiple instruction issue Static (at…