Input Processing

Input commands which you initiate are directed to the operating system.

You can enter all JES3 commands (except *DUMP and *RETURN) from a card reader (CR), tape reader (TR), or disk reader (DR). You can use the tape or disk reader to enter repetitive commands based on system requirements (such as shift change). Any output messages generated from a card reader, tape reader, or disk reader are displayed at the console from which you called the reader.

You can enter a pause command from any reader through the use of the //*PAUSE control statement. JES3 recognizes this statement only if the statement appears before the first //JOB statement in the job's input stream. When the //*PAUSE statement is recognized, the reader issues a message and waits for a reply. (For example, if *CALL and *START DSP commands are entered through the reader, the //*PAUSE statement can be used to stop the reader after the *CALL,dsp command is entered. This allows the DSP to be readied before the *START command is executed. When the DSP is ready, you can start the reader to have the next command executed.) The use of the //*PAUSE statement is intended primarily for system checkout and test.