Radio Shack TRS-80 - Page 111

20 FOR
X
=
TO
127
30
FOR
Y
=
TO 47
40
SET
(X, Y)
50
NEXT
Y
60
NEXT X
99 GOTO
99
and RUN.
The resident program fills the screen from left to right. Redesign it so it starts at the top and
fills
to
the
bottom.
Answer:
10
CLS
20 FOR Y
=
TO
47
30
FOR X
=
TO
127
40
SET (X, Y)
50
NEXT
X
60
NEXT Y
99 GOTO
99
Next, rewrite it so it starts painting at the bottom
and fills
to
the top.
NOffi; Wftgn rufthmg graphfes* youll profcabiy
..
-
want to
turn up both the Contrast and Brighten«5S
slightly/;
,'. ';
,4i;.-";
Don't forget . .
.
6r^ycrahgvetoUseth«
J8R:EAK
fcey
to stop the
endless
loop.
109