address compare inactive. You can cancel
an
address
compare simply by typing a non-hexadecimal character in
the first digit location.
This function has some limitations:
It
is
only
an
instruction compare stop and
not
a data
compare stop.
The
address entered must
be
the address of the start of
the instruction. Entering
an
address in the middle of an
instruction could cause the program to have
unpredictable results.
It
only works with addresses in real
370
storage (as
opposed to virtual addresses).
AL T
F6
Keys - Program Reset
If
you simultaneously press the Alternate key
and
the
F6
key, you cause a Program Reset
to
occur to the
370
processor (see Program Reset in
"370
Principles
of
Operations"). The processor
is
in the
"STOPPED"
state at
the
end
of
this operation.
AL T
F7
Keys - Clear Reset
If
you simultaneously press the Alternate key and the F7
key, you cause a Clear Reset
to
occur to the
370
processor
(see Clear Reset in
"370
Principles
of
Operations"). This
clears main storage. The processor
is
in the
"STOPPED"
state at the
end
of
this operation.
AL T
F8
Keys - External Interrupt
If
you simultaneously press the Alternate key and the
F8
key, you cause
an
External Interrupt
to
occur
to
the
370
processor (see External Interrupt in
"370
Principles
of
Operations").
B-8
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