IBM 5280 Distributed Data System - Index of

Decimal Registei Shift Right and Round (SRR)Source:Object:o1FD Result decimal register address: The address of the decimal register that willcontain the shifted data upon completion of this operation. The high-orderbytes of the result register are filled with zeros (hex FO). Data that is shiftedout of the low end of the register is lost.To round the result, a 5 is used with the same sign as the sign that is in theshift register; the 5 is added to the last byte of data that is shifted out of theresult register.fJ Shift decimal register address: The address of the decimal register that containsthe data to shift. The contents of this register remain unchanged.II Shift count: The number of bytes to shift the data. The shift count can bespecified as a constant (hex O-F) followed by hex 0 or as a decimal registerthat contains the shift count in the digits portion of the low-order byte of theregister.The bytes of the shift register are shifted right the number of bytes indicated bythe shift count, and the shifted result is placed into the result register. The highorderbytes of the shifted result contain zeros (hex FOs) for the number of bytesshifted, and the units position of the shifted result retains the zone of the originalcontents of the shift register. The result is rounded by adding 5 of like sign to thelast byte shifted out of the right end of the result register.168