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All ARM cores have a limited barrel shifter accessed with the multiply instructions. I forget which argument is the 8 bitter, but it takes one or two cycles + 1 for each 8 bits of the 8 bitter while the other can be as large as you want in all ARMs with more extensive multiply instructions available depending on the core version.DOes anyone know if the ARM Cortex-M3 has a barrel shifter or MAC? I don't seen it anywhere but I seem to be under the impression that it has them.