Radio Shack 26-1190A Hardware Manual page 12

Plotter printer. trs-80 micro computer system
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Function
of
CR
Code
When
a
CR
Code
is
input, the
pen
moves
to the
left
margin and
will
begin
printing
in
that position.
Effective
paper width
®
©
©
©
1964
Whenever
a
CR
Code
is
input, regardless
of
pen
position
-
at
(?)
or
"imaginary
positions" (6) or (7)
,
the
pen
will
return to position (4)
Example:
When
in
the
P
Mode
the
pen
is
set
to
(3500,
-1000)
and then
C Mode
and
CR
are input,
the
pen
will
move
as
illustrated.
B
•—
C.
1964
"
B
Imaginary
position of
pen
CR
Timing
Considerations
When
the
pen
is
positioned
at
the imaginary points
D
or
E
and
a
CR
code
is
input,
it
will
take approxi-
mately
three
seconds before
the
peri
moves
to the
left
margin.
(The
process "thinks" the
pen
is
at
that
position
and
will
calculate
motions
accordingly.)
It
will
take
approximately
400
mS
for
the
pen
to
return
to the
left
margin
when
automatic
return
is
made
at
the
80th
character.
Effective
paper width
E"
-32767
1964
»D
+32767
Note:
In the
rotated character
mode,
CR
functions
just as
normal, but
LF
does
not.
That
is,
CR
causes
the
pen
to
move
to
the
left
margin.
LF,
if
in
the
90 and 270 modes,
will
be
ignored. In the
180
mode,
LF
feeds
paper
in reverse.
-11-

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