Epson LX-90TM Installation Manual download pdf (Page 35)

Multiple-Line Program

Here is a program that shows you how the HomeWriter- com-

bines several lines of graphics for a figure taller than seven dots.

Start with a short program that prints two patterns alternately for

100 columns. Since there are two pin patterns in the loop, it needs to

be executed only 50 times.

NEW

10 OPEN4,4

PRINT#4,CHR$(8);

FOR X=1 TO

50 PRINT#4,CHR$(213)CHR$(170);

NEXT X

70 PRINT#4

120

CLOSE4

If you run the program now, you’ll see how one line of the pattern

looks:

To see how several lines combine to form a figure, change lines 60

and 70 and add lines 20 and 80-110 to the previous program to pro-

duce the program below.

10 OPEN4,4

FOR R=1 TO

PRINT#4,CHR$(8);

FOR X=1 TO

50 PRINT#4,CHR$(213)CHR$(170);

NEXT X: PRINT#4

70 PRINT#4,CHR$(8);

FOR X=1 TO

90 PRINT#4,CHR$(170)CHR$(213);

100 NEXT X: PRINT#4: NEXT R

110 PRINT#4

120 CLOSE4

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 ... 58 59

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Epson LX-90TM Installation Manual Page 35