PDABD symbolic field names

The following describes PDABD fields of the dummy control section generated by the PDABD macro. Included are the names, attributes, and descriptions of the dummy control section.

          PDABD
IHAPDAB   DSECT     
PDANODCB  DS       H   Number of DCB addresses in list.
PDAMAXCB  DS       H   Maximum number of addresses allowed.
          DS       A   Reserved for IBM use.
          DS       F   Reserved for IBM use.
PDADCBLA  DS       A   Address of the last DCB entry.
PDADCBEP  DS       A   Address of DCB entry last processed.
          DS       F   Reserved for IBM use.
PDADCBAL  EQU      *   Start of DCB list.