section 7 - Index of

ROR Rotate Right ROROperation: c:c~ .....I-----·-b47 24(parallelmove)Assembler Syntax:ROR D (parallel move)Description: Rotate bits 47-24 of the destination operand D one bit to the right andstore the result in the destination accumulator. Prior to instruction execution, bit 24 of Dis shifted into the carry bit C, and, prior to instruction execution, the value in the carry bitC is shifted into bit 47 of the destination accumulator D. This instruction is a 24-bit operation.The remaining bits of the destination operand D are not affected.Example:ROR B1 #$1234,R2;rotate B1 right one bit, update R2B ~I __Before Execution$0_0:_00_00_0_1:2_~_2_~_~SR 1 ....._____$_03_00_---'After ExecutionB ~I __ $_O_o:o_o_oo_oo_:~_~_~ __-,-,SRI ....._____$0_3_05_~Explanation of Example: Prior to execution, the 56-bit B accumulator contains thevalue $00:000001 :222222. The execution of the ROR B instruction shifts the 24-bit valuein the B1 register one bit to the right, shifting bit 24 into the carry bit C, rotating the carrybit C into bit 47, and storing the result back in the B1 register.