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yoursystempassesthecodesdirectlytothepMterwithoutchangingthem,
you will get a printoutlike Figure5-5.
MostBASICS, h owever,arenotquitethatstraightforward. F orexample,the
IBM-PCwill giveyou a printoutsimilarto Figure5-6.
CIO 01
02
O?, 04
05
06
07
0 B 09
OA
OB
OC
0[1
OA
O E
0 F
1 (;
' 1
1 ;
: 3
14
15
16
17
18
19
I 8
1 c
I D
: E
1 F
.,0
~ ,
~ ~
~~
~ q
~ ~
~ ~ ; ~
28
29
2 A ?F) i'C
2[!
2 f
2 F
30
31
32
3:3 34
35
36
31
38
39
3A
38
3C
30
3 E '? F
40
41
4 z 4 ? 44
45
46
47
48
49
4A
4h
4C
40
4 E 4f
50
5 1 52
5.3
54
55
5 b 5 ;'
58
5Y
5A
58
5C
50
5f
SF
~ o ~ ,
5 ~
~?,
64
b 5 66
67
58
69
6A
6B
5C
60
6 E 6 F
7 G 71
72
73
74
75
7 Ij
77
78
79
7A
7t3
7C
7CI 7E
7F
80
81
62
83
84
85
86
87
88
89
8 A 8B
8C
80
8 E 8 F
~ o 91
92
93
94
95
9 @ 97
98
99
9 A 9S
9C
3D
9 E 9 F
AD
A 1 A2
A3
A4
/+5
Ab
A 7
A8
A$i
AA
AB
AC
ACI AC
AF
B O B 1 B 2 B 3 84
B 5 B '6 B 7
B8
89
BA
BB
EC
BD
Bf
BF
C O C 1 C Z C3
C4
C 5 C 6 C 7
C8
C9
CA
CB
CC
CD
CE
CF
00
D 1 D Z D3
D4
LI5 06
D 7"
Cl8 D 9 L)A CIB D[;
l)D
D E D F
[ O E 1 E 2
E 3
E 4
E 5
E 6
E 7
E 8
E 9
E A E B E C E O E E E F
FO
F 1 F2
F3
F4
F5
F6
F7
F8
F9
FA
F8
FC
FD
FE
FF
OD
OA
Ygum S6. Sample hexadedmaldumpwith IBM-PC.
Whenthe IBM-PCBASICinterpretersendshex codeOD(carriagereturn)
it addsanextrahexOA(linefeed).Hexcode1A(end-of-file) alsogetsspecial
t.matment: theinterpreterdoesnotsendit atall.Thiscancauseproblemswith
graphicsor downloadcharacterdata.However,you can solvethisproblem
by changingline30 in the precedingprogramandaddingthecodingshown
below.
Codingfor IBM-PCwithmonochromedisplay:
30 GOSUB 100
100 X=INP (&H3BD) : IF X<128 THEN 100
110 OUT &H3BC, 1 : OUT &H3BE,5
: OUT &H3BE,4
120 RETURN
Codingfor IBM-PCwith coloradapter:
30 GOSUB 100
100 X=INP (&H379)
: IF X<128 THEN 100
110 OUT &H378 , I :OUT &H37A, 5 :OUT &H37A, 4
120 RETURN
51
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