April 1, 1981
18.2 VM/370 Operator's Guide
If the clocks should run out of low-order synchronization, after the
clocks are synchronized (during or after system initialization), you
will receive the following message: DMKCLK970W TOO CLOCK SYNC CHECK RECEIVED CLOCK SYNCHRONIZATION-PRESS 'TOO ENABLE SET' As before, press the TOO Enable SET Key to synchronize the clocks. VM/370 uses the interval timer to support time slicing; therefore,
during initialization, the system verifies that the interval timer is
running before virtual machine logon operations are performed. The system initialization routine will loop issuing the following message if
the interval timer is found not running when tested: TURN ON THE INTERVAL TIMER TURN ON THE INTERVAL TIMER The messages cease when the operator complies by enabling the
interval timer and the system initialization process continues.
In attached processor application the text of
the processor owning the disabled interval timer.
follows: TURN ON THE { MAIN } PROCESSOR INTERVAL TIMER ATTACHED
the message indicates
This message reads as
To continue, the interval timer must be enabled on the requested
processor. CONSOLE DEFINITION The terms "system console", "primary system console", and "alternate system console" apply to those console devices that exercise primary control of the processor.
The VM/370 primary system console can be a real system console, a
real alternate system console, or a local 3270. The VM/370 alternate system console can be a real system console, a
real alternate system console, a local 3270, or any VM/370 supported
remote terminal on a leased line connected to a 270x transmission control unit (TCU). The VM/370 alternate system console cannot be a remote terminal connected to a 370x TCU. !Qte: If the 370x is loaded with the 270x Emulation Program prior to
initializing VM/370, the 370x then appears to V8/370 as a 270x TCU. The following examples show the various configurations that can
control YM/370 operations. Section 2. Initiating VM/370 Operation 19
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