IBM 5280 Distributed Data System - Index of

Compare Decimal for Greater Than or Less Than (I F An GT /L T)Source:GOTO instruction labelObject:D GT. The test register: The address of the decimal register that contains datato compare.L T. Compare data: The constant (hex 0-9) followed by hex 0, or the addressof the decimal register that contains the compare data. If a constant is used,the bytes on the left are padded with blanks (hex 40s) before the compare.fJ GT. The compare data: The constant (hex 0-9) followed by hex 0, or theaddress of the decimal register that contains the compare data. If a constantis used, the bytes on the left are padded with blanks (hex 405) before thecompare.L T. The test register: The address of the decimal register that contains thedata to compare.II Branch instruction: The number minus 1 of 4-byte object code instructionsfrom the next sequential instruction to skip if the branch is taken (±128object code instructions from the next instruction). If bit 23 is 1, the numberis a negative displacement in twos complement form.The branch is taken if:• The content of the test register is greater than the compare data and GT issr'ecified.• The content of the test register is less than the compare data and L T is specified.Object Code Instruction Format 219