11.07.2015 Views

Program Logic Manual - All about the IBM 1130 Computing System

Program Logic Manual - All about the IBM 1130 Computing System

Program Logic Manual - All about the IBM 1130 Computing System

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Significant variables:Symbolic locationCP120CP200CP350CP350+1CP370CP380CP450Contents/UseThe function is placed here. This word is executed to decode <strong>the</strong> function./7000 is a MDX */7001 is a MDX * + 1/7002 is a MDX * + 2Carriage return counter, used for counting carriage returns for restore.IOCC for printing on console.CP350 contains address of CP450.Actual word count of message not including trailing blanks.Data area pointer, pointing to <strong>the</strong> word containing <strong>the</strong> 2 EBCDIC characters,one of which is being printed.Print character buffer word. The IOCC points to this word, which contains<strong>the</strong> character or control character just printed.<strong>Program</strong> Analysis Procedures 131

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