Nexcom EBC575 Series Manual page 78

Follow these instructions below to set the register:
1. Select the time-out intervals of WDT (decide the values of D2, D1, D0 in F2)
Exampe: If D2~D0 = 0, the time-out internal is 64 seconds.
2. Enable or Disable WDT (decide D3 value in F2)
Example: D3 = 0, Disables WDT
Example: D3 = 1, Enables WDT
After finishing the above setting, you must be output for the Control Register's value to the WDT Configura-
tion Port. Then WDT will start according to the above setting.
EBC575 User's Manual
AND al, 11111000b
OR al, 11110111b
OR al, 00001000b
MOV dx, F2h
OUT dx, al
; Setting the time-out internal as 64 seconds.
; Disable the WDT
; Enable the WDT
; Setting WDT Configuration Port
; Output the Control Register Value
78 Appendix B