Diagnoses activity between an HIA and the 5080 Control Unit.
panel20 [ HIA0 | HIA1 | HIA2 ]
Use the panel20 command as a diagnostic tool to determine whether the Host Interface Adapter (HIA) is correctly installed and communicating with the 5088 Graphics Channel Control Unit (GCCU).
The panel20 command displays a diagnostic screen with the following columns: Device Name, Channel Address, Link Address, Link Status, Poll Counter, SNRM Counter.
If the HIA is correctly installed and the host operating system is correctly configured to support 3270 devices on the 5088, the entries in the Set Normal Response Mode (SNRM Counter) column will be increasing. If the entries in SNRM Counter are not increasing, refer to problem determination procedures for the HIA and verify that the host operating system is correctly configured.
To start the panel20 command, enter:
panel20
By default, the panel20 command will monitor HIA0. To monitor HIA1 or HIA2, enter:
panel20 HIA1
OR
panel20 HIA2