ZyXEL Omni TA 128 User Guide - Page 144

Binary value, Decimal value, Hexadecimal value, Operation, Example-1, Example-2, Binary, ATS38=n

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O note: The values used in the example below differ from the actual values in the S-register and are used for demonstration purposes only. Read the value from S38 using ATS38? Convert it to binary, using the following weight table: Bit Binary value Decimal value Hexadecimal value 0 00000001 1 $01 1 00000010 2 $02 2 00000100 4 $04 3 00001000 8 $08 4 00010000 16 $10 5 00100000 32 $20 6 01000000 64 $40 7 10000000 128 $80 To set bit 3 to 1 (binary), do a logic OR operation with the value. Operation Example-1 Example-2 Binary Dec. Hex Binary Dec. Hex. 10001000 136 $88 01000000 64 $40 OR 00001000 8 $08 00001000 8 $08 10001000 136 $88 01001000 72 $48 To set bit 3 to 0 (binary), you must invert the value using a logic NOT operation and then do an logic AND operation. NOT 00001000 8 $08 00001000 8 $08 11110111 247 $F7 11110111 247 $F7 AND 10001000 136 $88 01000000 64 $40 10000000 128 $80 01000000 64 $40 Finally, using the result decimal value, issue an ATS38=n to set the register. 132

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132
O
note:
The values used in the example below differ from the actual
values in the S-register and are used for demonstration purposes
only.
Read the value from S38 using ATS38?
Convert it to binary, using the following weight table:
Bit
Binary value
Decimal value
Hexadecimal value
0
00000001
1
$01
1
00000010
2
$02
2
00000100
4
$04
3
00001000
8
$08
4
00010000
16
$10
5
00100000
32
$20
6
01000000
64
$40
7
10000000
128
$80
To set bit 3 to 1 (binary), do a logic OR operation with the value.
Operation
Example-1
Example-2
Binary
Dec.
Hex
Binary
Dec.
Hex.
10001000
136
$88
01000000
64
$40
OR
00001000
8
$08
00001000
8
$08
10001000
136
$88
01001000
72
$48
To set bit 3 to 0 (binary), you must invert the value using a logic
NOT operation and then do an logic AND operation.
NOT
00001000
8
$08
00001000
8
$08
11110111
247
$F7
11110111
247
$F7
AND
10001000
136
$88
01000000
64
$40
10000000
128
$80
01000000
64
$40
Finally, using the
result
decimal value, issue an
ATS38=n
to set
the register.