AMI MI956, User Manual

Page: 68 / 69

APPENDIX
64 MI956 User’s Manual
//---------------------------------------------------------------------------
//
// 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) //F intek 81865
{ goto Init_Finish; }
F81865_BASE = 0x2E;
result = F81865_BASE;
ucDid = Get_F81865_Reg(0x20);
if (ucDid == 0x07) //F intek 81865
{ goto Init_Finish; }
F81865_BASE = 0x00;
result = F81865_BASE;
Init_Finish:
return (result);
}
//---------------------------------------------------------------------------
void Unlock_F81865 (void)
{
outportb(F81865_INDEX_PORT, F81865_UNLOCK);
outportb(F81865_INDEX_PORT, F81865_UNLOCK);
}
//---------------------------------------------------------------------------
void Lock_F81865 (void)
{
outportb(F81865_INDEX_PORT, F81865_LOCK);
}
//---------------------------------------------------------------------------
void Set_F81865_LD( unsigned char LD)
{
Unlock_F81865();
outportb(F81865_INDEX_PORT, F81865_REG_LD);
outportb(F81865_DATA_PORT, LD);
Lock_F81865();
}
//---------------------------------------------------------------------------
void Set_F81865_Reg( unsigned char REG, unsigned char DATA)
{
Unlock_F81865();
outportb(F81865_INDEX_PORT, REG);
outportb(F81865_DATA_PORT, DATA);
Lock_F81865();
}
//---------------------------------------------------------------------------
unsigned char Get_F81865_Reg(unsigned char REG)
{
unsigned char Result;
Unlock_F81865();