Radio Shack TRS-80 Model III - Page 37

OPERATION
The
remaining
64 must first be
'
'
switched
in
'
'
and then
may be
displayed
via
PRINT
.
Codes
192
through 255
normally function
as
space
compression codes;
however, a
software
switch will
activate the
special
character set.
The
statement:
PRINT
CHR$(21)
switches back
and
forth
between
space
compression
and
special
characters.
Another
software
switch
selects an
alternate
set
of
special
characters
(Japanese
Kana
characters)
.
Each time you
execute
the
statement
PRINT
CHR$(22)
the
active/inactive
sets are
swapped.
The
following
program
will
switch in the
special
characters
and
display
both sets
of
them.
5
CLS
10 POKE
16526, 105
'
LSB OF
*IIMITIO ENTRY
ADDRESS
20 POKE
16527,
'MSB
30 X
=
USR<0>
'CALL
*IIMITIO
40
PRINT CHR*<21>
'SWITCH
IN
SPECIAL
CHARACTERS
50 INPUT
"PRESS
<EIMTER>
TO SEE
SPECIAL
CHARACTERS";
X
60
FOR I
=
192
TO 255
70
PRINT
CHR*( I )
?
80 NEXT I
90
PRINT
100 INPUT
"PRESS
<EIMTER> TO
SWITCH TO
ALTERNATE
SET"?
X
110 PRINT CHR*<22>5
'SWITCH
IN
ALTERNATE
SET
120
INPUT "PRESS
<EIMTER> TO
RETURN TO
NORMAL
AND END"?
X
130
PRINT
CHR*<22>5
CHR*<21)
27