gtpi1m4bSystem Installation Support Reference

Recoup Restart

The recoup chain chase exit, BRU2, is called by BRSH, the recoup restart segment, if chain chasing was in progress before the system was IPLed. BRSH determines if the RCP tape is open and the sequence number (BK0SQN) is nonzero. If so, BRU2 is entered. Otherwise, recoup is restarted from the beginning.

BRU2 must be able to determine if user chain chasing was in progress. If so, it must determine where it should restart from. If user chain chasing was not in progress, BRU2 must return to allow BRSH to decide where in TPF recoup to restart from.

Input

R1=4
Shows entry from BRSH.

R4
Base of in-core recoup keypoint

R6
Base of global area.

D0
Recoup save area.

D6
Recoup logging block.

Programming Considerations

Control must be returned to BRSH.