Protech Systems PMB-732LF User Manual page 54

Chapter 3 Software Configuration
MOV AL,07h
OUT DX,AL
MOV DX,2Fh
MOV AL,07h
OUT DX,AL
;***********************************************;
; Select Time resolution by index 72h
; AL=C0h Second resolution
; AL=80h Minute resolution
;***********************************************;
MOV DX,2Eh
MOV AL,72h
OUT DX,AL
MOV DX,2Fh
MOV AL,0C0h
OUT DX,AL
;***********************************************;
; Write non-zero value into index 73h
; for Enable WDT and Start count down.
;***********************************************;
MOV DX,2Eh
MOV AL,73h
OUT DX,AL
MOV DX,2Fh
MOV AL,02h
OUT DX,AL
;***********************************************;
; Write zero value into register AL
; for Disable WDT.
;***********************************************;
MOV DX,2Eh
MOV AL,73h
OUT DX,AL
MOV DX,2Fh
MOV AL,00h
OUT DX,AL
;***********************************************;
; Exit PnP Mode
;***********************************************;
MOV DX,2Eh
MOV AL,02h
OUT DX,AL
MOV DX,2Fh
MOV AL,02h
OUT DX,AL
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PMB-732LF USER

S MANUAL