COMTRAN Reconstruction

J28-6169 · January 1962

02.07.14

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[02.07.14]

c) Explanation of Problem

Blocks J and J+1 each contain 84 characters (14 words); 80 characters of the record plus 4 characters of unwanted data which the card-to-tape equipment supplied to make the block a multiple of six characters.

Upon the command 'GET REC1' (assuming that REC1 is the next record to be read) 14 words are transmitted (because of the HOLD option) from the buffer to the area associated with REC1. Now if the command 'GET REC2' is given, 14 words are transmitted to the area belonging to REC2. The information at REC1 is still available after this second command and will continue to be available until replaced by another 'GET REC1'.

Note, other Commercial Translator operations, such as the MOVE, will be based upon the 80 characters specified in the Data Description of the record rather than the 84 characters appearing on tape.