| The control values held in the memories
of camcorders are generally 8 bit, and are output as
hexadecimal when using a utility such as DV-in Lite V1.7.
Consequently a value could potentially be anywhere in the
range 00 to FF (0 to
255 decimal). It would appear on the
face of it that with 256 (decimal) values on offer, there
could be 255 alternatives to try when experimenting with
the memory value in one particular location. This is not
generally the case, as usually one bit is used to switch
a function (1 for on, 0 for off). This means that a byte
(8 bits) may contain only sufficient information to
switch on (or off) a maximum of 8 functions. Let us
take as an example the hex value 5C (decimal
92), for which the binary representation is 01011100.
It will be seen that 4 of the bits are already set high (1),
consequently the hex values to experiment with are 5D,
5E, 7C, and DC.
These alternatives are arrived at by setting in turn each
zero bit to 1, and outputting the newly derived value in
hex. That bit is then reset to zero before moving on and
repeating the function with the next zero bit. It will be
seen from this example that there are only 4
possiblilites to experiment with, not 255.
The following table lists the hex values from 00
to FF, together with their equivalent
decimal and binary representations. Following each binary
value is a list of possible hex values to try when
experimenting with memory value changes in a camcorder.
These alternative values have been derived by the method
described above.
When experimenting with alternative values it is
ABSOLUTELY ESSENTIAL to ensure that the original value
held in a location is known. A suitable procedure would
be to change the value to the first alternative in the
list, then evaluate whether the desired function has been
enabled. If it has not, it would then be appropriate to
move on and try the next alternative value in the list,
and so on until all the possible alternative values have
been exhausted. The memory location would then have it's
original value restored, before moving on to the next
location in sequence in order to repeat the procedure.
If at any time it is found that the desired function
has been enabled, then the new memory value for that
location should be noted, but the location should still
have it's contents returned to the original value until
details of the procedure for updating the checksum for
that model have been obtained. Only when the procedure
for updating the checksum has been obtained should the
new memory value be set and stored, and the checksum
updated in order to prevent system crashes on start-up.
It is EQUALLY ESSENTIAL to ensure that there is
sufficient power in the camcorder's battery to last for
the duration of the experimental period. The reason for
this is that if the battery runs out when there is a non-standard
value in one of the memory locations and the checksum has
not been updated, the camcorder will crash on checksum
failure the next time it is powered up. It will then be a
struggle to get it powered up and stable in order to
rectify the error before continuing. For this reason the
use of mains power is not advised when experimenting. A
failure of the mains supply cannot usually be predicted,
whereas battery usage can be planned and monitored so
that such crashes do not occur.
Hex. Dec. Binary Alternative values to try
|
00 0 00000000 01 02 04 08 10 20 40 80
01 1 00000001 03 05 09 11 21 41 81
02 2 00000010 03 06 0A 12 22 42 82
03 3 00000011 07 0B 13 23 43 83
04 4 00000100 05 06 0C 14 24 44 84
05 5 00000101 07 0D 15 25 45 85
06 6 00000110 07 0E 16 26 46 86
07 7 00000111 0F 17 27 47 87
08 8 00001000 09 0A 0C 18 28 48 88
09 9 00001001 0B 0D 19 29 49 89
0A 10 00001010 0B 0E 1A 2A 4A 8A
0B 11 00001011 0F 1B 2B 4B 8B
0C 12 00001100 0D 0E 1C 2C 4C 8C
0D 13 00001101 0F 1D 2D 4D 8D
0E 14 00001110 0F 1E 2E 4E 8E
0F 15 00001111 1F 2F 4F 8F
10 16 00010000 11 12 14 18 30 50 90
11 17 00010001 13 15 19 31 51 91
12 18 00010010 13 16 1A 32 52 92
13 19 00010011 17 1B 33 53 93
14 20 00010100 15 16 1C 34 54 94
15 21 00010101 17 1D 35 55 95
16 22 00010110 17 1E 36 56 96
17 23 00010111 1F 37 57 97
18 24 00011000 19 1A 1C 38 58 98
19 25 00011001 1B 1D 39 59 99
1A 26 00011010 1B 1E 3A 5A 9A
1B 27 00011011 1F 3B 5B 9B
1C 28 00011100 1D 1E 3C 5C 9C
1D 29 00011101 1F 3D 5D 9D
1E 30 00011110 1F 3E 5E 9E
1F 31 00011111 3F 5F 9F
20 32 00100000 21 22 24 28 30 60 A0
21 33 00100001 23 25 29 31 61 A1
22 34 00100010 23 26 2A 32 62 A2
23 35 00100011 27 2B 33 63 A3
24 36 00100100 25 26 2C 34 64 A4
25 37 00100101 27 2D 35 65 A5
26 38 00100110 27 2E 36 66 A6
27 39 00100111 2F 37 67 A7
28 40 00101000 29 2A 2C 38 68 A8
29 41 00101001 2B 2D 39 69 A9
2A 42 00101010 2B 2E 3A 6A AA
2B 43 00101011 2F 3B 6B AB
2C 44 00101100 2D 2E 3C 6C AC
2D 45 00101101 2F 3D 6D AD
2E 46 00101110 2F 3E 6E AE
2F 47 00101111 3F 6F AF
30 48 00110000 31 32 34 38 70 B0
31 49 00110001 33 35 39 71 B1
32 50 00110010 33 36 3A 72 B2
33 51 00110011 37 3B 73 B3
34 52 00110100 35 36 3C 74 B4
35 53 00110101 37 3D 75 B5
36 54 00110110 37 3E 76 B6
37 55 00110111 3F 77 B7
38 56 00111000 39 3A 3C 78 B8
39 57 00111001 3B 3D 79 B9
3A 58 00111010 3B 3E 7A BA
3B 59 00111011 3F 7B BB
3C 60 00111100 3D 3E 7C BC
3D 61 00111101 3F 7D BD
3E 62 00111110 3F 7E BE
3F 63 00111111 7F BF
40 64 01000000 41 42 44 48 50 60 C0
41 65 01000001 43 45 49 51 61 C1
42 66 01000010 43 46 4A 52 62 C2
43 67 01000011 47 4B 53 63 C3
44 68 01000100 45 46 4C 54 64 C4
45 69 01000101 47 4D 55 65 C5
46 70 01000110 47 4E 56 66 C6
47 71 01000111 4F 57 67 C7
48 72 01001000 49 4A 4C 58 68 C8
49 73 01001001 4B 4D 59 69 C9
4A 74 01001010 4B 4E 5A 6A CA
4B 75 01001011 4F 5B 6B CB
4C 76 01001100 4D 4E 5C 6C CC
4D 77 01001101 4F 5D 6D CD
4E 78 01001110 4F 5E 6E CE
4F 79 01001111 5F 6F CF
50 80 01010000 51 52 54 58 70 D0
51 81 01010001 53 55 59 71 D1
52 82 01010010 53 56 5A 72 D2
53 83 01010011 57 5B 73 D3
54 84 01010100 55 56 5C 74 D4
55 85 01010101 57 5D 75 D5
56 86 01010110 57 5E 76 D6
57 87 01010111 5F 77 D7
58 88 01011000 59 5A 5C 78 D8
59 89 01011001 5B 5D 79 D9
5A 90 01011010 5B 5E 7A DA
5B 91 01011011 5F 7B DB
5C 92 01011100 5D 5E 7C DC
5D 93 01011101 5F 7D DD
5E 94 01011110 5F 7E DE
5F 95 01011111 7F DF
60 96 01100000 61 62 64 68 70 E0
61 97 01100001 63 65 69 71 E1
62 98 01100010 63 66 6A 72 E2
63 99 01100011 67 6B 73 E3
64 100 01100100 65 66 6C 74 E4
65 101 01100101 67 6D 75 E5
66 102 01100110 67 6E 76 E6
67 103 01100111 6F 77 E7
68 104 01101000 69 6A 6C 78 E8
69 105 01101001 6B 6D 79 E9
6A 106 01101010 6B 6E 7A EA
6B 107 01101011 6F 7B EB
6C 108 01101100 6D 6E 7C EC
6D 109 01101101 6F 7D ED
6E 110 01101110 6F 7E EE
6F 111 01101111 7F EF
70 112 01110000 71 72 74 78 F0
71 113 01110001 73 75 79 F1
72 114 01110010 73 76 7A F2
73 115 01110011 77 7B F3
74 116 01110100 75 76 7C F4
75 117 01110101 77 7D F5
76 118 01110110 77 7E F6
77 119 01110111 7F F7
78 120 01111000 79 7A 7C F8
79 121 01111001 7B 7D F9
7A 122 01111010 7B 7E FA
7B 123 01111011 7F FB
7C 124 01111100 7D 7E FC
7D 125 01111101 7F FD
7E 126 01111110 7F FE
7F 127 01111111 FF
80 128 10000000 81 82 84 88 90 A0 C0
81 129 10000001 83 85 89 91 A1 C1
82 130 10000010 83 86 8A 92 A2 C2
83 131 10000011 87 8B 93 A3 C3
84 132 10000100 85 86 8C 94 A4 C4
85 133 10000101 87 8D 95 A5 C5
86 134 10000110 87 8E 96 A6 C6
87 135 10000111 8F 97 A7 C7
88 136 10001000 89 8A 8C 98 A8 C8
89 137 10001001 8B 8D 99 A9 C9
8A 138 10001010 8B 8E 9A AA CA
8B 139 10001011 8F 9B AB CB
8C 140 10001100 8D 8E 9C AC CC
8D 141 10001101 8F 9D AD CD
8E 142 10001110 8F 9E AE CE
8F 143 10001111 9F AF CF
90 144 10010000 91 92 94 98 B0 D0
91 145 10010001 93 95 99 B1 D1
92 146 10010010 93 96 9A B2 D2
93 147 10010011 97 9B B3 D3
94 148 10010100 95 96 9C B4 D4
95 149 10010101 97 9D B5 D5
96 150 10010110 97 9E B6 D6
97 151 10010111 9F B7 D7
98 152 10011000 99 9A 9C B8 D8
99 153 10011001 9B 9D B9 D9
9A 154 10011010 9B 9E BA DA
9B 155 10011011 9F BB DB
9C 156 10011100 9D 9E BC DC
9D 157 10011101 9F BD DD
9E 158 10011110 9F BE DE
9F 159 10011111 BF DF
A0 160 10100000 A1 A2 A4 A8 B0 E0
A1 161 10100001 A3 A5 A9 B1 E1
A2 162 10100010 A3 A6 AA B2 E2
A3 163 10100011 A7 AB B3 E3
A4 164 10100100 A5 A6 AC B4 E4
A5 165 10100101 A7 AD B5 E5
A6 166 10100110 A7 AE B6 E6
A7 167 10100111 AF B7 E7
A8 168 10101000 A9 AA AC B8 E8
A9 169 10101001 AB AD B9 E9
AA 170 10101010 AB AE BA EA
AB 171 10101011 AF BB EB
AC 172 10101100 AD AE BC EC
AD 173 10101101 AF BD ED
AE 174 10101110 AF BE EE
AF 175 10101111 BF EF
B0 176 10110000 B1 B2 B4 B8 F0
B1 177 10110001 B3 B5 B9 F1
B2 178 10110010 B3 B6 BA F2
B3 179 10110011 B7 BB F3
B4 180 10110100 B5 B6 BC F4
B5 181 10110101 B7 BD F5
B6 182 10110110 B7 BE F6
B7 183 10110111 BF F7
B8 184 10111000 B9 BA BC F8
B9 185 10111001 BB BD F9
BA 186 10111010 BB BE FA
BB 187 10111011 BF FB
BC 188 10111100 BD BE FC
BD 189 10111101 BF FD
BE 190 10111110 BF FE
BF 191 10111111 FF
C0 192 11000000 C1 C2 C4 C8 D0 E0
C1 193 11000001 C3 C5 C9 D1 E1
C2 194 11000010 C3 C6 CA D2 E2
C3 195 11000011 C7 CB D3 E3
C4 196 11000100 C5 C6 CC D4 E4
C5 197 11000101 C7 CD D5 E5
C6 198 11000110 C7 CE D6 E6
C7 199 11000111 CF D7 E7
C8 200 11001000 C9 CA CC D8 E8
C9 201 11001001 CB CD D9 E9
CA 202 11001010 CB CE DA EA
CB 203 11001011 CF DB EB
CC 204 11001100 CD CE DC EC
CD 205 11001101 CF DD ED
CE 206 11001110 CF DE EE
CF 207 11001111 DF EF
D0 208 11010000 D1 D2 D4 D8 F0
D1 209 11010001 D3 D5 D9 F1
D2 210 11010010 D3 D6 DA F2
D3 211 11010011 D7 DB F3
D4 212 11010100 D5 D6 DC F4
D5 213 11010101 D7 DD F5
D6 214 11010110 D7 DE F6
D7 215 11010111 DF F7
D8 216 11011000 D9 DA DC F8
D9 217 11011001 DB DD F9
DA 218 11011010 DB DE FA
DB 219 11011011 DF FB
DC 220 11011100 DD DE FC
DD 221 11011101 DF FD
DE 222 11011110 DF FE
DF 223 11011111 FF
E0 224 11100000 E1 E2 E4 E8 F0
E1 225 11100001 E3 E5 E9 F1
E2 226 11100010 E3 E6 EA F2
E3 227 11100011 E7 EB F3
E4 228 11100100 E5 E6 EC F4
E5 229 11100101 E7 ED F5
E6 230 11100110 E7 EE F6
E7 231 11100111 EF F7
E8 232 11101000 E9 EA EC F8
E9 233 11101001 EB ED F9
EA 234 11101010 EB EE FA
EB 235 11101011 EF FB
EC 236 11101100 ED EE FC
ED 237 11101101 EF FD
EE 238 11101110 EF FE
EF 239 11101111 FF
F0 240 11110000 F1 F2 F4 F8
F1 241 11110001 F3 F5 F9
F2 242 11110010 F3 F6 FA
F3 243 11110011 F7 FB
F4 244 11110100 F5 F6 FC
F5 245 11110101 F7 FD
F6 246 11110110 F7 FE
F7 247 11110111 FF
F8 248 11111000 F9 FA FC
F9 249 11111001 FB FD
FA 250 11111010 FB FE
FB 251 11111011 FF
FC 252 11111100 FD FE
FD 253 11111101 FF
FE 254 11111110 FF
FF 255 11111111
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Page last
updated: 29 January, 2005
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