American Megatrends MI956 User Manual page 67

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//---------------------------------------------------------------------------
void EnableWDT(int interval)
{
unsigned char bBuf;
bBuf = Get_F81865_Reg(0x2B);
bBuf &= (~0x20);
Set_F81865_Reg(0x2B, bBuf);
Set_F81865_LD(0x07); //switch
Set_F81865_Reg(0x30, 0x01);
bBuf = Get_F81865_Reg(0xF5);
bBuf &= (~0x0F);
bBuf |= 0x52;
Set_F81865_Reg(0xF5, bBuf);
Set_F81865_Reg(0xF6, interval);
bBuf = Get_F81865_Reg(0xFA);
bBuf |= 0x01;
Set_F81865_Reg(0xFA, bBuf);
bBuf = Get_F81865_Reg(0xF5);
bBuf |= 0x20;
Set_F81865_Reg(0xF5, bBuf);
}
//---------------------------------------------------------------------------
void DisableWDT(void)
{
unsigned char bBuf;
Set_F81865_LD(0x07); //switch
bBuf = Get_F81865_Reg(0xFA);
bBuf &= ~0x01;
Set_F81865_Reg(0xFA, bBuf);
bBuf = Get_F81865_Reg(0xF5);
bBuf &= ~0x20;
bBuf |= 0x40;
Set_F81865_Reg(0xF5, bBuf);
}
//---------------------------------------------------------------------------
MI956 User's Manual
APPENDIX
//Enable WDTO
to logic device 7
//enable timer
//count mode is second
//set timer
//enable WDTO output
//start counting
to logic device 7
//disable WDTO output
//disable WDT
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