Star Micronics SJ-48 manual Hexadecimal dump, Next Lprint END

Hexadecimal dump

This feature is useful for programmers who are debugging printing programs 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 the II button down, turn power ON. A beep tone will be heard.

2.Begin printing. In 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 characters printed on the right.

3. Attheendofthehexadecimaldump,setthepfinteroff-line withthe I ON ] button. This is necessary to print the last line.

The following BASIC program is a simple test you can run in hexadecimal mode:

10WIDTH “ LPT 1 : “ , 255

20FOR 1=0 TO 255

30 LPRINT CHR$ ( I ) :

40NEXT I

50LPRINT END

If your system passes the codes directly to the printer without changing them, you will get a printout like Figure 4-7.

00

01 02 0.3 04

05

06

07

Oh

09

[M

OH

OC

(01)

OF

OF

10 11 12 13 14

15

16

17

I b

1Y

1A

i B

I (:

1D

1!-

1F

20

21

22

23

24

25

26

27

2b

29

2A

2B

2(:

2D

2E

2F’

30

31

32

33

34

.35

36

37

3b

39

.3A

3B

3C

31)

3E

3E”

40

41

42

43

44

45

46

47

48

49

4A.

4B

4C

4U

41?

4F

50

51

52

53 54

55

5b

.57

.58

59

5A

5B

5C

51)

5E

5P’

60

61

62

6.3

64

65

66

67

66

69

6A

OF! bC

bI)

bF

6F-

70

’71

72

73

74

75

76

77

78

79

7A

7B

7C

7D

7E

7fi’

80

81

82

83

84

55

86

87

86

$39

6A

hB

bC

hI)

SE

bF

90

91

92

93

94

95

96

97

98

99

9A

9B

9(;

91)

91?

9F”

AO

A 1

A2

A3

.A4

.A5

.Ab

A7

AS

.A9 .AA AR AC

AD

.4P

AF

BO

B1

B2

B3

134

B5

Bb

B7

B8

B9

nA

Hi?

13c

[it)

BP:

BP”

co

c 1

C2

C3

C4

[:5

C(-J C7

CS

C9

CA

(;11 CC

CD

CE

CF’

DO

D1

D2

F)3

04

D5

Db

1)7

1)8

1)9

DA

F)B IX;

DE

I)F

I)h

EO

E 1

E2

h;.3 !s4

E5 I-6 !-7

E8

E9

F:A

F;B EC

El)

F:P: EF’

FO

F 1

F2

F:3

F4

F5

F“6

E-7

FEi

F9

E“A FB

FC

E’D

F1-

F’P’

F

4

S

h

d

. . . . . . . . . . . . . . . .

. . . . . . . . . . . .

; : ;$O/o&( )?<+,– ./

0 ; ?

BI JKLMNO

PQRSTUVWXY’Z [ \ 1

‘ a	i j k
p	{ I }

. . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . .

Most BASICS, however, are not quite that straightforward. For example, the IBM-PC will give you a printout similar to Figure 4-8.

When the IBM-PC BASIC interpreter sends hex code OD(carriage return) it adds an extra hex OA (line feed). Hex code 1A (end-of-file) also gets special treatment: the interpreter does not send it at all. This can cause problems with graphics or download character data. However, you can solve this problem by changing line 30 in the preceding program and adding the coding shown below.

Chapter4 CONTROL PANEL OPERATIONS 27