Supplying DDRXA Control Statements from the IPL Device

Normally, you enter DDRXA control statements interactively after you IPL the program. However, if DDRXA resides on a DASD volume, you can direct DDRXA to read the control statements from the end of the file you IPL. To do this, you must set up the program and control statements before you IPL, as follows:

  1. Edit the DDRXA program and put the control statements at the end of the file.
  2. Transfer the program to tape, a card deck, or your virtual reader as usual.

The control statements transfer along with the program. Then you can load the program on the real processor (using the tape or the card deck) or in your virtual machine (using the tape or your virtual reader) as discussed previously.

After you load the program and receive the initial prompt, press ENTER. DDRXA reads all the control statements, completes the requested functions, and ends.