75
AIMB-281 User Manual
Appendix A
P
rogramming
the
W
atchdog
Timer
A.1.3
Example Program
1.
Enable watchdog timer and set the timeout interval as 10 seconds
;-----------------------------------------------------------
Mov dx,2eh; Unlock NCT6776F
Mov al,87h
Out dx,al
Out dx,al
;-----------------------------------------------------------
Mov al,07h; Select the watchdog timer registers
Out dx,al
Inc dx
Mov al,08h
Out dx,al
;-----------------------------------------------------------
Dec dx; Enable the watchdog timer function
Mov al,30h
Out dx,al
Inc dx
Mov al,01h
Out dx,al
;-----------------------------------------------------------
Dec dx; Set seconds as the counting unit
Mov al,0f5h
Out dx,al
Inc dx
In al,dx
And al,not 08h
Out dx,al
;-----------------------------------------------------------
Dec dx; Set the timeout interval as 10 seconds and start counting
Mov al,0f6h
Out dx,al
Inc dx
Mov al,10
Out dx,al
;-----------------------------------------------------------
Dec dx; Lock NCT6776F
Mov al,0aah
Out dx,al
2.
Enable the watchdog timer and set the timeout interval as 5 minutes
;-----------------------------------------------------------
Mov dx,2eh; Unlock NCT6776F
Mov al,87h
Out dx,al
Out dx,al
Summary of Contents for AIMB-281
Page 10: ...AIMB 281 User Manual x...
Page 14: ...AIMB 281 User Manual xiv...
Page 15: ...Chapter 1 1 General Information...
Page 26: ...AIMB 281 User Manual 12...
Page 27: ...Chapter 2 2 Connecting Peripherals...
Page 36: ...AIMB 281 User Manual 22 2 9 Line Out Mic In Connector AUDIO1 AUDIO2...
Page 47: ...Chapter 3 3 BIOS Operation...
Page 66: ...AIMB 281 User Manual 52 3 4 1 2 PCI Express Root Port 1 2 3...
Page 77: ...Chapter 4 4 Chipset Software Installation Utility...
Page 80: ...AIMB 281 User Manual 66...
Page 81: ...Chapter 5 5 VGA Setup...
Page 83: ...Chapter 6 6 LAN Configuration...
Page 85: ...Appendix A A Programming the Watchdog Timer...
Page 93: ...Appendix B B Jumper Settings Connector List...
Page 97: ...83 AIMB 501 User Manual Appendix B Jumper Settings Connector List...
