A.2 It8712 Watchdog Timer Initial Program - Aaeon EMB-900M Manual

Micro atx board intel pentium 4 processor, up to 3.2ghz micro atx board with lcd and ethernet, 7.1 channel audio & mini pci

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M i c r o A T X B o a r d

A.2 IT8712 Watchdog Timer Initial Program

.MODEL SMALL

.CODE

Main:

CALL Enter_Configuration_mode

CALL Check_Chip

mov cl, 7

call Set_Logic_Device

;time setting

mov cl, 10 ; 10 Sec

dec al

Watch_Dog_Setting:

;Timer setting

mov al, cl

mov cl, 73h

call Superio_Set_Reg

;Clear by keyboard or mouse interrupt

mov al, 0f0h

mov cl, 71h

call Superio_Set_Reg

;unit is second.

mov al, 0C0H

mov cl, 72h

call Superio_Set_Reg

E M B - 9 0 0 M

Appendix A Programming the Watchdog Timer

A - 7

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