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Hexadecimal dump
This feature is useful for programmers who are debugging printing pro-
grams and want to see the actual codes the printer is receiving. (Some
computers change the codes the programmer intended.)
In this mode, all data received will be printed in a hexadecimal dump format,
rather than the control codes being acted on as command codes.
This mode is accessed with the following procedure:
1. While holding both
the(PAPER FEED)and(
SEJ&l~"'
)buttons down,
turn power ON. A beep tone will be heard.
2. Begin printing. ln place of the usual printout you will get a formatted
dump showing exactly what data the printer receives. Each line presents
sixteen characters, their hexadecimal codes to the left and printable char-
acters printed on the right.
3. At the end of the hexadecimal dump, set the printer off-line with the
( 0N LINE ) button. This is necessary to print the last line.
The following BASIC program is a simple test you can run in hexadecimal
mode:
10 LPRINT
WIDTH "LPT1:".255
20 FOR I=0
TO 255
30 LPRINT
CHR$(I);
40 NEXT I
50 LPRINT
60 END
If your system passes the codes directly to the printer without changing
them, you will get a printout like Figure 2-5.
00
01
02
03
04
05
06
07
08
09
OA
08
OC
OD
OE
OF
. . .
. . . . . . . . . . . .
10
11
12
13
14
15
16
17
18
19
1A
1B
1C
1D
1E
1F
.,,.____.,..__..
20
21
22
23
24
25
26
27
28
29
2A
ZB
2C
2D
2E
2F
!"#$%a'()*+,-./
30
31
32
33
34
35
36
37
38
39
3A
38
3C
3D
3E
3F
0123456789:;<=>?
40
41
42
43
44
45
46
47
48
49
4A
48
4C
4D
4E
4F
QABCDEFGHIJKLMNO
50
51
52
53
54
55
56
57
58
59
5A
58
5C
50
5E
5F
PQRSTUVWXYZ
[\I
^-
60
61
62
63
64
65
66
67
68
69
6A
6B
6C
60
6E
6F
'abcdefghijklmno
70
71
72
73
74
75
76
77
70
79
7A
78
7C
70
7E
7F
pqrstuvwxyz(;)-.
80
81
82
83
84
85
86
87
88
89
8A
8B
8C
8D
8E
8F
._.__....___....
90
91
92
93
94
95
96
97
98
99
9A
9B
9C
9D
9E
9F
.,___.._,.._._..
A0
Al
A2
A3
A4
A5
A6
A7
A8
A9
AA
AB
AC
AD
AE
AF
. . . .
. .
. .
. . . .
BO
Bl
RZ
B3
84
B5
B6
B7
B8
89
BA
BB
BC
BD
BE
BF
.
CO
Cl
C2
C3
C4
C5
C6
C7
C8
C9
CA
CB
CC
CD
CE
CF
. . . . . .
. . .
. . . .
DO
01
D7
03
04
D5
D6
07
D8
D9
DA
DB
DC
DD
DE
DF
. . . .
.
. . . .
.
. .
EO
El
EZ
E3
E4
E5
E6
E7
E8
E9
EA
EB
EC
ED
EE
EF
.._.___.__,_._._
FO
Fl
F2
F3
F4
F5
F6
F7
F8
F9
FA
FB
FC
FD
FE
FF
. . .
. . .
.
.
.
OD
OA
QW.S 2-5. Sample hexadecimal dump
30
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