Zyxel-communications Omni TA128 Instrukcja Użytkownika Pobierz pdf (Strona 144)

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OO 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.

1 2 ... 139 140 141 142 143 144 145 146 147 148 149 ... 172 173

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Zyxel-communications Omni TA128 Instrukcja Użytkownika Strona 144