WIN Enterprises PL-80260, Руководство пользователя

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User’s Manual
WIN Enterprises, Inc. Nov., 2010
59
Program 3: Disable the watchdog timer
MOV DX,2EH
MOV AL,87H
OUT DX,AL
OUT DX,AL
O 2E 87
O 2E 87
MOV DX,2EH ; Set timer interval value to 0 seconds
MOV AL,F6H
OUT DX,AL
MOV DX,2FH
MOV AL,00H ; Timer interval 00H,(= disable)
OUT DX,AL
MOV DX,2EH
MOV AL,AAH
OUT DX,AL
O 2E F6
O 2F 00
O 2E AA
Note: This XX value range is from 01H to FFH and the related watchdog timer
interval is 1 sec. to 255 sec. (as noted in the previous description)
.
Using the Demo Program
Update the System BIOS as follows:
1. Run Program 1
2. Run Program 2 (load the timer interval of 1EH, 30 seconds)
3. Run your Application Program #1 ( Be sure your Application Program will
finish within 30 seconds)
4. Run Program 3 (Load the timer interval of 00H and disable the watchdog timer
function)