Intel PCI-6886 User Manual page 73

Outportb (0x2e,0xaa); //Exit Configuration Mode
3, Disable Watchdog
Outportb (0x2e,0x87);
Outportb (0x2e,0x87); //Entry Configuration Mode
Outportb (0x2e,0x07); //Select Register Index 0x07
Outportb (0x2f,0x08); //Select LDN 8
Outportb (0x2e,0x30); //Select LDN 8 Register Index 0x30
Outportb (0x2f,0x00); //Disable Watchdog Timer Device
Outportb (0x2e,0xaa); //Exit Configuration Mode
63 Appendix A