IBM 4400 Manual Do Utilizador
268
Chapter
8
P-Series Compatible Plot Mode (Odd/Even Dot Plotting)
Plotting the Data
P-Series Plot Mode plots the image from the horizontal bit pattern. Figure 34
duplicates the pattern shown in Figure 29 but is modified for Odd Dot Plot.
Eight dot rows are required, two characters per row, six columns per
character.
duplicates the pattern shown in Figure 29 but is modified for Odd Dot Plot.
Eight dot rows are required, two characters per row, six columns per
character.
Figure 34. Odd Dot Plot Pattern Plan
The following program uses the Odd Dot Plot control code to produce the
image. The image is printed 25 times as shown in Figure 35. An entire dot row
is plotted in one printing pass. Consequently, the first row of all 25 images is
printed in one pass, followed by the second row, etc., until all rows have been
printed.
image. The image is printed 25 times as shown in Figure 35. An entire dot row
is plotted in one printing pass. Consequently, the first row of all 25 images is
printed in one pass, followed by the second row, etc., until all rows have been
printed.
10
LPRINT *Odd Dot Plot*
20
FOR I=1 TO 8
30
READ R1
40
READ R2
50
LPRINT CHR$(5);
60
FOR N=1 TO 25
70
LPRINT CHR$(R1);CHR$(R2);
80
NEXT N
90
LPRINT
100
NEXT I
110
DATA 42, 64, 73, 65, 92, 64, 42, 64, 73, 65, 92,
64, 42, 64, 73, 65
120
LPRINT
Figure 35. Sample Odd Dot Plot
1
2
3
4
5
6
7
8
1
3
11
5
7
9
1
3
11
5
7
9
1st
CHARACTER
ODD COLUMNS
2nd
CHARACTER
ODD COLUMNS
1st
CHARACTER
ASCII DECIMAL
2nd
CHARACTER
ASCII DECIMAL
42
73
92
42
73
92
42
73
*
|
\
*
|
\
*
|
64
65
64
64
65
64
64
65
@
A
@
@
A
@
@
A
DOT
ROW