Implicit Termination Of Ipds Mode; Copy Considerations - IBM 6400 Programmer's Reference Manual

IPDS for Control Units
Figure 26. LU-1 Data Stream Modes

Implicit Termination of IPDS Mode

If IPDS mode is active, any of the following causes termination of the active
destination selection and is an implicit termination of IPDS mode:
Note: IPDS always returns to the home state upon termination.

Copy Considerations

Because an End Bracket is also an implicit termination of IPDS mode,
between-bracket printer sharing can be used for either operator-initiated or
host-initiated copy operations.
For improved throughput, the recommended procedure is to include the entire
page within a chain.
172
6400 IPDS
A chain indicating End Bracket (EB)
•
CLEAR
•
Power-on-reset (POR).
•