Radio Shack Quick Printer II - Page 14

OPERATION
The
Shift
In code
tells the
Printer
to
switch
to
the
1
6-character/
line format.
It
must be the
first code received
by
the Printer
after
a
carriage
return,
otherwise
it will
be
ignored.
This means
that
you cannot
mix
the normal and
the double-size
characters
on the
same line.
Once you select the
double-size,
the
Printer will remain in that
mode
until .
. .
A) It has printed
16 characters
or
B)
It
reaches the
end of the
line
whichever
comes first.
One way
to
print long messages in
the double size
mode with
BASIC
LPRINT
statements
is to
insert
CHR$(13)
CHR$(15)
pairs
in the LPRINT
list
every
16th character
or so.
For example:
JOT
J*.p-(-i.-ni!.M
i,J.<*tfi*>\i
J.!
m
LPRINT iWTHIS IS
GOJrJG'iiBJ
•70
M.
ftWIJHG
HlSShGP
Printable Characters
The
Quick Printer II can produce all ASCII characters from
hex
20
through
hex
7F
(decimal
32 through
127).
Here's what
they look
like:
;
"
23-
S
-
y
.
oc
/
c
>
*
+
f
-
.
/
8
1
c!
3
4
b
7
3
9
:
-
<
=
>
-~i
a A
T>
c
D
F
F
G
H
I
J
K
L M
. T
P
Q
R S
T
u
1-i
u
»-"-.
—
t
4-
<
->
F
B b
c
CI
©
f
-i
h
i
j
1 fO
n
o
P
ci
r
=:
t
i.-l
u
Ul
y z
Note that four
of the codes
are
different from
the usual ASCII
character
set.
Hex Code
Dec. Code
ASCII char.
Quick Printer II char.
5B
91
1
t
5C
92
\ +
5D
93
]
«-
5E
94
A
-»
The arrows are more
useful since they
correspond
to
the TRS-80's
Video Display
character set.
14