For a sign-extending (arithmetic) shift, see the description of {if (tb)} Rdest = Rm +>> Rn on page 81.Flags affected: if unconditional or test bit is set, then update N, Z, C, OV, LT TB and TS are affected, if an unconditional shift was specifiedExample: r5 = r7 >> 4; // Shift r7 right 4 bits and set implicity set TB to bit 4 of r7 if (tb) r6 = r6 + r8;