IBM 5280 Distributed Data System - Index of

Decimal Register Shift Right, Blank Pad (SR)Source: Ra SR 1Ra Rb SR~ ~I I IObject: 16([~-:J1I0 8 I15I 23 I 31D fJ IID Result decimal register address: The address of the decimal register that willcontain the shifted data upon completion of this operation.fJ Shift decimal register address: The address of the decimal register that containsthe data to shift, or a constant 1 if you want to blank the result register.Note: If a constant 1 is used, II must also be 1. This is the quickest way toblank a decimal register.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 by theshift count, and the shifted result is placed into the result register. The high-orderbytes of the shifted result contain blanks (hex 40) for the number of, positionsshifted. If a negative number is shifted right, the D-zone is shifted out of the registerand the register contents are no longer negative.If a constant 1 is specified for the sh ift register, the bytes are sh if ted as though fJwere a decimal register with decimal 1 in the rightmost byte, and bytes 0-14 wereblanks. The rightmost byte is shifted out of the register so the register containsonly blanks. These blanks replace the contents of the result register.Object Code I nstruction Format 159