Star Micronics NX-2420 User Manual Page 38

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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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