mage examined without prearrangement.
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Certain of the hardware generated
faults plus the interrupt and quit signals
can be ignored or caught by the process.
For example,
the Shell ignores quits to prevent
a quit from logging the user out.
The editor catches interrupts and returns
to its command level.
This is useful for stopping long printouts
without losing work in progress (the editor
manipulates on a copy of the \(file it is editing).
In systems without \(floating point hardware,
unimplemented instructions are caught
and \(floating point instructions are
interpreted.
nerated
faults plus the interrupt and quit signals
can be ignored or caught by the process.
For example,
the Shell ignores quits to prevent
a quit from logging the user out.
The editor catches interrupts and returns
to its command level.
This is useful for stopping long printouts
without losing work in progress (the editor
manipulates on a copy of the \(file it is editing).
In systems without \(floating point hardware,
unimplemented instruc