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3. At the end of the hexadecimal dump, set the printer off-line with the
On Line switch. This is necessary to print the last line.
The following BASIC program is a simple test you can run in hexade-
cimal mode:
10 FOR I-O
*TO 255
20 LPRINT
CHR$(I);
30 NEXT I
40 LPRINT
50 END
If your system passes the codes directly to the printer without changing
them, you will get a printout like Figure 2-5.
10 11 12
13 14 15 16 17
20 21 22
23 24 25 26 27
30 51 32
53 34 J5 3‘ ,7
40 41 42
43 44 45 46 47
50 51 52
53 54 55 56 57
60 61 62
4; 64 65 66 67
70 71 72
75 74 75 76 77
80 El 82
83 84 85 86 87
90 91 92
95 94 95 96 97
A0 Al A2 c\3 A4 A5 A4 A7
BCI Hl 82 H3 84 H5 EL6 H7
co Cl c2
C3 C4 C5 C6 C7
DO Dl D2 D3 D4 D5 D6 D7
EO El E2
E3 E4 E5 E6 E7
FO Fl F2 F3 F4 F5 F6 F7
OD OA
18 19 1A 1H 1C 1D IE 1F
28
29 2A 26 2C 2D 2E
2F
ZR 29 SA 3B ;C ZD SE 3F
48 49 4A 4B 4C 4D 4E 4F
58
59 3~ 56 5C 5D 5E
5F
68
69 bA 66 6C 6D bE
6F
78 79 ?A 7R 7C 7D 7E 7F
88
89 8A 86 8C ED 8E
8F
98
99 9A 98 9C 9D 9E
9F
A8 A9 AA AEI AC AD AE AF
BB B9 HA BR BC BD BE BF
C8 C9 CA CR CC CD CE CF
D8 D9 DA DB DC DD DE DF
E8 E9 EA EB EC ED EE EF
F8 F9 FA FB FC FD FE FF
. . . . . . . . . . . . . . . .
’ “WB%&’ ( ) *+. -. /
0 123456789 : ; .:: = >?
@ABCDEFGHIJKLMNO
PQHSTUVWXYZE\l’-
‘abcde+ghiJklmno
pqrstuvwxyzc I:‘.
Figure 2-5. Sample hexadecimal dump
Most BASICS, however, are not quite that straightforward. For example,
the IBM-PC prints the following.
CH:, 01
02
03 04 ,:15 06 07 OR
09 CIA OR CC
OD OA
OE . . . . . . . . . . . . . . . .
OF 10 11
12 13 14 15 16 17
18 19 16 1C 10 1E
1F . . . . . . . . . . . . . . . .
20 21
22
23 24 25 26 27 28
29 2A 26 2C
“D 2E
2F ‘“%5%&~ o*+,-./
30 31
32
3’1: 54 35 76 37 38
39 3A 36
3C 3D 3E
3F 0123456789: ;<=:.?
40 41
42
4J 44 45 46 47 40
49 4A 4B
4C 4D 4E
4F BABCDEFGHIJKLMNO
50 51
52
53 54 55 56 57 58
59 SA 56
5C 5D 5E
5F PQH8T!JVWXYZC\l*~
60 61
62
63 64 65 66 67 68
69 6A 68 6C
6D bE
6F ‘abcdefqhi jklmna
70 71
72
7rI. 74 75 76 77 78
79 7A 7B 7C
7D 7E
7F pqrstLivwt:yzI : 2,“.
80 81
82
83 84 85 86 87 88
89 8A 8H 8C
8D 8E
8F . . . . . . . . . . . . . . . .
90 91
92
93 94 95 96 97 98
99 9A 98
9C 9D 9E
9F . . . . . . . . . . . . . . . .
A0 Al
A2
FIT A4 A5 A6 A7 A8
A9 AA AH
AC AD AE
AF . . . . . . . . . . . . . . . .
HO 81
82
B3 B4 B5 86 B7 H8
B9 BA BH
BC BD BE
BF . . . . . . . . . . . . . . . .
co Cl
c2
CI: c4 c5 Cb c7 CB
C9 CA CB CC CD
CE
CF . . . . . . . . . . . . . . . .
DO Di
Dr)
DI: D4 D5 D6 D7 D8
D? DA DB
DC DD DE
DF . . . . . . . . . . . . . . . .
EO El E2
E3 E4 E5 E6 E7 E8
E9 EA EB EC ED EE
EF . . . . . . . . . . . . . . . .
FO Fl
F2
FS F4 F5 F6 F7 F8
F9 FA FR
FC FD FE
FF . . . . . . . . . . . . . . . .
OD I:,‘?
. .
Figure 2-6. Sample hexadecimal dump with IBM-PC
2.5
L.
E