IEI Integration NANO-LX v1.21 - Manual (Page 183)

NANO-LX EPIC SBC
Page 168
NOTE:
When exiting a program it is necessary to disable the Watchdog Timer,
otherwise the system will reset.
Example program:
; INITIAL TIMER PERIOD COUNTER
;
W_LOOP:
MOV AX, 6F02H ; setting the time-out value
MOV BL, 30 ; time-out value is 48 seconds
;
; ADD YOUR APPLICATION PROGRAM HERE
;
CMP EXIT_AP, 1 ; is your application over?
JNE W_LOOP ; No, restart your application
MOV AX, 6F02H ; disable Watchdog Timer
MOV BL, 0 ;
INT 15H
;
; EXIT ;