Tag Archives: assembly

Lost in translation (C vs. Assembly Language)

Posted on October 23, 2011 by bitjunkie

In my classes on microcontroller programming I often draw comparisons between C and assembly language. This is to show my students that either programming language has both advantages and disadvantages. While the efficiency of C code predominantly depends on how … Continue reading →

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Masking

Posted on February 19, 2011 by bitjunkie

In this posting I’m going to explain a bit-twiddling technique called masking. It is used to extract (and alter) specific bits in a word of bits, for example a byte. You might be familiar with IP subnet masks in network … Continue reading →

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Loops

Posted on February 10, 2011 by bitjunkie

A loop allows to repeatedly execute a sequence of instructions. From the CPU’s view a loop simply means resetting the program counter (PC) which always points to the currently executed instruction. ; Example in some pseudo assembly language ; showing … Continue reading →

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