A television set or a
video
monitor?
TelevisiOn sets
annal
displ.1y
~
columns
of
text
cle.1r1y.
To
use the
40-column displ.1y,
de.1ctiV.1lC
the
ord.
To
displ.1y
SO
columns
of
text, you need
.1
monochrome
or
color monitor
Programmable
features
A
number
of
the
ord's
fcatures.1re .1nil:l.blc: to BASIC
progr:lmmers These include:
• SO-column
diSpl.1Y
•
Speci.11
displ.1Y
features (li\-vERSE, FlASli,
/'\ORMAL.
HO~IE,
.1nd
t.1bbing)
•
Esape
fC2tures
• Control ch.1r:lcter functions
These
BASIC
fe;llurcs and functions are listed in "Escape Sequences
In
BASIC"
.1nd
"Control
Chuaeter
Codes
10
BASIC."
Paso
I
progr:lmmers
should
see
"Pascal Screen Control
Codes,"
When
progr:lmnung with the
ord,
keep
four things
in
mind
•
To
dispby
80 columns
.1nd
usc
the
esape
fC.1tures
.1nd
control
char:lcter codes, you must
actinic
your text
cud.
(If
you don't
want to displ.1y 80 columns
.1nd
use the features,
just
leave
lhe
ord
inactive.)
• After you
h.1ve
.1ctiv.1ted
the Clrd, you Cln
SWitch
the
diSpl.1Y
from
80
10
40 columns without deactivating the Clrd's
other
fe.1tures
• Always de.1etinte the Clrd before
)'00
switch
OUlpul
from the
diSpl.1y
to a pcripher:ll device such
as
a primer
• Bec.1use many programs cxpect to find the Clrd inactive,
ii'S
good
progr:lmming practice
10
deactivale the
ard
.11
the
end
of
a
program, thereby readying the
ard
for
mher
programs.
136 AppendjIC
F:
ExTended 8O-CokJrnn
TelCf
Cord
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