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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 locationCHARCOLMBUSYCOUNTERRORINDICRSTRTRSTRT+1RSTRT+2Contents/UseSecond half of Sense DSW IOCC.Address being punched from.Busy indicator; non-zero = busy.Number of columns to punch.Non-zero indicates feed a card (SKIP).Read station feed check if non-zero.Word count for restart.Data address for restart.Address of user's error routine.<strong>Program</strong> Analysis Procedures 161

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