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shifting 72 bit A1:0 result?

Question asked by audio_dsp on Aug 13, 2015
Latest reply on Aug 26, 2015 by SachinV

When implementing IIR/FIR filters one often needs to scale the accumulated result by 2^k: implemented as a k bit left or right shift. Is there a quick way to do this for 72 bit A1:0 register? That is can one shift high order bits from A0.H into A1? Similarly can low order bits from A1.L be shifted into A0.H?