This exit point is called when DFSMSdss has read a track from DASD. The EIRECPTR points to the track buffer. The first 64 bytes (X'40') of the track buffer are IBM® internal information that is followed by the ADRTAPB area, the DTTTRK area, and the track image. The valid return codes are:

0

Continue normal processing

20

Disconnect exit

32

End function. This return code is only valid for a full dump