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ZiLOG System 8000 User Manual

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USER
(
41
command
Zilog
USER
A
function
performed
by
the
system,
either
by
the
shell
or
by
a
program
residing
in
a
file
in
the
ZEUS
system.
context
switching
CONTROL
Interrupting
the
activity
in.
progress
and
switching
to
another
activity.
A
context
switch
involves
saving
for
later
restoration
the
contents
of
the
general-purpose
registers,
~he
Program
Counter
and
the
~
gng
Status
~.
The
CONTROL
key,
labeled
CTRL,
generates
and
sends
control
instructions
to
the
terminal
during
command
execution.
Any
character
typed
with
the
CTRL
key
pressed
is
transparent
to
the
user,
but
is
recognized
by
the
CPU.
CPU
(central
processing
unit)
The
unit
of
a
computing
system
that
includes
the
circuits
controlling
the
interpretation
of
instructions
and
their
execution.
data
structure
A
logical
organization
of
primitive
ele-
ments
(e.g
byte
or
word)
whose
format
and
access
conventions
are
well
defined.
Examples
of
data
structures
are
tables,
lists,
and
arrays.
data
type
The way
in
which
bits
are
grouped
and
interpreted.
For
an
instruction,
the
data
type
of
an
operand
determines
its
size
and
the
significance
of
its
bits.
Operand
data
types
include
byte,
word,
long
word,
byte
string,
word
string,
and
BCD
digit.
debugging
Debugging
is
the
process
of
correcting
mistakes
in
programs
and
shell
scripts.
The
shell
has
several
options
and
vari-
ables
that
can
be
used
to
aid
in
shell
debugging.
Zilog
41

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ZiLOG System 8000 Specifications

General IconGeneral
BrandZiLOG
ModelSystem 8000
CategoryDesktop
LanguageEnglish

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