IEI Technology Nano-PV-D4251, User Manual

Page: 149 / 153

NANO-PV-D4251/N4551/D5251 EPIC SBC
Page 136
NOTE:
When exiting a program it is necessary to disable the Watchdog Timer,
otherwise the system resets.
Example program:
; INITIAL TIMER PERIOD COUNTER
;
W_LOOP:
MOV AX, 6F02H ;setting the time-out value
MOV BL, 30H ;time-out value is 48 seconds
INT 15H
;
; ADD THE APPLICATION PROGRAM HERE
;
CMP EXIT_AP, 1 ;is the application over?
JNE W_LOOP ;No, restart the application
MOV AX, 6F02H ;disable Watchdog Timer
MOV BL, 0 ;
INT 15H
;
; EXIT ;