Sample Program - AXIOMTEK CAPA830 User Manual

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CAPA830 Intel Atom

Sample Program

Assembly sample code :
;Un-lock super I/O:
mov dx,2Eh
mov al,87
out dx,al
out dx,al
;Select Logic device:
mov dx,2Eh
mov al,07h
out dx,al
mov dx,2Fh
mov al,07h
out dx,al
;WDT Device Enable:
mov dx,2Eh
mov al,30h
out dx,al
mov dx,2Fh
mov al,01h
out dx,al
;Activate WDT:
mov dx,2Eh
mov al,F0h
out dx,al
mov dx,2Fh
mov al,80h
out dx,al
;Set base timer :
mov dx,2Eh
mov al,0F6h
out dx,al
mov dx,2Fh
mov al,Mh
out dx,al
;Set Second or Minute :
mov dx,2Eh
mov al,0F5h
out dx,al
mov dx,2Fh
mov al,Nh
out dx,al
;Disable WDT:
mov dx,2Eh
mov al,30h
out dx,al
mov dx,2Fh
mov al,00h
out dx,al
Note:
If N=71h, the time base is set to second.
M = time value
00: Time-out Disable
01: Time-out occurs after 1 second
72
TM
D2550/N2800/N2600 Processor 3.5" SBC
;M=00h,01h,...FFh (hex),Value=0 to 255
;(see below
;N=71h or 79h(see below
;Can be disabled at any time
Note )
Note
)
Watchdog Timer