These aren&#x27;t true of MSP430 or AVR, both of which are RISC-ish designs. Also, you still have to save the link register inside functions that call other functions. I also didn&#x27;t explain SPARC register windows. :)<p>But hopefully these nitpicks aren&#x27;t so much &quot;annoying&quot; as they are an example of how little you need to know to follow a discussion about super nitpicky details of different architectures. AVR has a general-purpose programmable condition flag &#x27;T&#x27; in its status register. What do you do with the &#x27;T&#x27; flag? I&#x27;unno, but hopefully the basic idea makes sense after not- too- much reading!