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Xerox 560 Reference Manual

Xerox 560
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Table
22.
Diagnostic
Control
(P-Mode)
Commands
Character
Function
ENTER
P-MODE.
####.
..
##
I~ut
data
or address
value
(context
determined
by
the
succeeding
operator.
#
##.
.•
## is
any
hex
digit
string).
SELECT
INTERNAL
REGISTER
ADDRESSING.
/
SELECT
MEMORY ADDRESSING.
+ ADD
TO
SELECTED
LOCATION.
SUBTRACT
FROM
SELECTED
LOCATION.
M STORE
IN
SELECTED
LOCATION.
L
SHIFT
LEFT
AND
DISPLAY.
R SHIFT RIGHT
AND
DISPLAY.
INCREMENT
REFERENCED
ADDRESS
AND DISPLAY.
RUBOUT
S
DISPLAY
ADDRESSED
LOCATION.
INSTRUCTION SINGLE STEP.
G
SPECIAL INSTRUCTION SINGLE
STEP.
x
EXIT
P-MODE.
(f'-Mode)
L SHIFT
LEFT
AND
DISPLAY
This command
causes
an
image
of
the
contents
of
the
pres-
ently
selected
memory
location
or Q
register
to
be
shifted
one
bit
position
to
the
left
and
then
displayed.
A
zero
is
entered
into
the
least
significant
bit
of
the
location
for
each
L command.
Actual
contents
of
the
memory or
Q-register
location
ref-
erenced
by
the
shift
instruction
are
not
altered.
(P-Mode)
R SHIFT RIGHT AND
DISPLAY
This command
causes
an
image
of
the
contents
of
the
pres-
ently
selected
memory
location
or Q
register
to
be
shifted
one
bit
position
to
the
right
and
then
displayed.
A
zero
is
entered
into
the
most
significant
bit
of
the
memory
location
or Q
register
for
each
R command
executed.
Actual
contents
of
the
memory or Q
register
location
ref-
erenced
by
the
shift
instruction
are
not
altered.
(P-Mode)
I
INCREMENT
REFERENCED
ADDRESS
AND
DISPLAY
This command
increments
by + 1
the
address of
the
currently
selected
memory
location
or Q
register
{as
specified
by a
previously
executed
SELECT
MEMORY ADDRESSING or
SELECT
INTERNAL
REGISTER
ADDRESSING
control
com-
mand}. The
new
address
and
contents
are
displayed
on
the
next
line.
{P-Mode}
RUB
OUT
DISPLAY
ADDRESSED
LOCATION
This command
displays
the
contents
of
the
currently
ad-
dressed memory
location
or Q
register
{as
specified
by
a
previously
executed
SELECT
MEMORY ADDRESSING
or
SELECT
INTERNAL REGISTER ADDRESSING
control
command}.
(P-Mode)
S INSTRUCTION
SINGLE
STEP
This command
causes
the
BP
to
execute
a
single
instruc-
tion
as
pointed
to
by
the
current
contents
of
the
program
counter.
Execution is
precisely
the
same as
if
the
system
were
running
continuously.
Upon
completion,
the
BP
returns
to
the
IDLE
state.
If
a
trap
occurs
while
the
instruc-
tion
is
being
executed,
the
instruction
in
the
trap
location
is
executed
before
the
BP
returns to
the
IDLE
state.
The
resultant
display
shows
the
next
instruction
to
be
executed.
Condition
codes
resulti ng from
the
instruction
execution
are
displayed
as
the
second
hexadecimal
digit
of
the
ad-
dress
field.
Control Commands 157

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Xerox 560 Specifications

General IconGeneral
Print Resolution2400 x 2400 dpi
Monthly Duty CycleUp to 300, 000 pages
Duplex PrintingStandard
Operating System CompatibilityWindows, Mac OS, Linux
ConnectivityEthernet, USB
Paper SizeUp to 13 x 19.2 inches
TypeMultifunction Printer

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