American Megatrends MB950 User Manual page 63

Set_F81865_LD(0x07);
Set_F81865_Reg(0x30, 0x01); //enable timer
bBuf = Get_F81865_Reg(0xF5);
bBuf &= (~0x0F);
bBuf |= 0x52;
Set_F81865_Reg(0xF5, bBuf); //count mode is second
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);
bBuf = Get_F81865_Reg(0xFA);
bBuf &= ~0x01;
Set_F81865_Reg(0xFA, bBuf); //disable WDTO output
bBuf = Get_F81865_Reg(0xF5);
bBuf &= ~0x20;
bBuf |= 0x40;
Set_F81865_Reg(0xF5, bBuf);
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
//
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
// PURPOSE.
//
//---------------------------------------------------------------------------
#include "F81865.H"
#include <dos.h>
//---------------------------------------------------------------------------
unsigned int F81865_BASE;
void Unlock_F81865 (void);
void Lock_F81865 (void);
//---------------------------------------------------------------------------
unsigned int Init_F81865(void)
{
unsigned int result;
unsigned char ucDid;
F81865_BASE = 0x4E;
result = F81865_BASE;
ucDid = Get_F81865_Reg(0x20);
if (ucDid == 0x07)
{
F81865_BASE = 0x2E;
result = F81865_BASE;
ucDid = Get_F81865_Reg(0x20);
if (ucDid == 0x07)
{
F81865_BASE = 0x00;
result = F81865_BASE;
goto Init_Finish; }
goto Init_Finish; }
MB950 User's Manual
//switch to logic device 7
//set timer
//enable WDTO output
//start counting
//switch to logic device 7
//disable WDT
APPENDIX
//Fintek 81865
//Fintek 81865
59