Page of GC20-1806-9 As Updated April 1, 1981 by TNL GN25-0834 To load a 370x program into the 370x (either manually or
automatically), the 370x program must previously have been saved on one
of system volumes. Specifications in the VM/370 configuration module, DMKRIO, describe whether the load process is
automatic or manual. For more information on saving or loading a 370x control program, see the VM/370 Planning System Generation If manual loading is necessary or desirable for a 370x control
program, you shQuld use the NETWORK LOAD command as follows: NETWORK LOAD raddr ncpname
where raddr specifies the physical device address of the 370x, and
ncpname is the name of a 370x control program image.
If the specified 370x Communications Controller does not require
loading (that is, it already has an active control program loaded), the
following message appears on your console:
DMKNLD461R CTLR raddr IPL NOT REQUIRED; ENTER 'YES' TO CONTINUE: You should verify that yon specified the correct 370x, and reply "YES" only if the load is to be attempted. (Note that execution of the NETWORK LOAD command causes the 370x to be reset, thus discontinuing any
current teleprocessing activity.) Other messages relating to the operation of the 370x can appear on
your console. These messages are described in the System Messages. For more information about the facilities of the NETWORK command, ref er to the "NETWORK Dump Operations", "CP Commands", and "NCPDUMP" sections in this book. CONSIDERATIONS FOR LOADING ALL 370X CONTROL PROGRAMS When using the NETWORK LOAD command to load an EP for the 370x, the
following events occur: Active users are disconnected I Active I/O operations are reset Dedicated devices are detached and released Dialed lines are released Devices enabled but not dedicated are reset Binary synchronous communication are reset
22 VM/370 Operator's Guide
Page of GC20-1806-9 As Updated April 1, 1981 by TNL GN25-0834 SPECIAL CONSIDERATIONS FOR THE EP 370X CONTROL PROGRAM If a 370x Emulation Program (EP) is automatically reloaded after a 310x failure, the system may loop after the restart. The message
DMKRNH4631 CTLR xxx UNIT CHECK; RESTART IN PROGRESS and two responses
CTLR xxx DUMP COMPLETE CTLR xxx ncpname LOAD COMPLETE indicate that the 370x has been reloaded. If the system loops after the
second response, must reset all emulator lines from the 310x control
panel.
If the automatic dump feature is not enabled, one of the messages
DMKRNH462I CTLR UNIT OHECK; IPL REQUIRED DMKRNH464I CTLR 'raddr' CC=3; DEPRESS 310X "LOAD" BUTTON indicates a 310x abnormal termination. You must reload the 310x Emulation Program with the NETWORK LOAD command. If the system loops
when an attempt is made to enable the lines, you must reset all emulator
lines from the 370x control panel.
The IBM 37Q4 Control Panel Guide and the IBM 3705 Contral Panel Guide resetting 370x control panel in its "Generating Channel End/Device End with Emulator
program" section.
A 370x communications centroller cannot be used by VM/370, as a 370x, unless it has been loaded by VM/370. Use of the ATTACH and DETACH
commands reset the "loaded" status and, therefore, the 370x will need to
be reloaded.
section 2. Initiating VM/370 operation 23
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