AMI MI982, Руководство пользователя

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APPENDIX
MI982 User’s Manual 67
//---------------------------------------------------------------------------
//
// T HIS CODE AND INFORMAT ION IS PROVIDED "AS IS" WIT HOUT WARRANT Y OF ANY
// KIND, EIT HER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMIT ED T O T HE
// IMPLIED WARRANT IES OF MERCHANT ABILIT Y AND/OR FIT NESS FOR A PART ICULAR
// PURPOSE.
//
//---------------------------------------------------------------------------
#include "F81866.H"
#include <dos.h>
//---------------------------------------------------------------------------
unsigned int F81866_BASE;
void Unlock_F81866 (void);
void Lock_F81866 (void);
//---------------------------------------------------------------------------
unsigned int Init_F81866(void)
{
unsigned int result;
unsigned char ucDid;
F81866_BASE = 0x4E;
result = F81866_BASE;
ucDid = Get_F81866_Reg(0x20);
if (ucDid == 0x07) //Fintek 81866
{ goto Init_Finish; }
F81866_BASE = 0x2E;
result = F81866_BASE;
ucDid = Get_F81866_Reg(0x20);
if (ucDid == 0x07) //Fintek 81866
{ goto Init_Finish; }
F81866_BASE = 0x00;
result = F81866_BASE;
Init_Finish:
return (result);
}
//---------------------------------------------------------------------------
void Unlock_F81866 (void)
{
outportb(F81866_INDEX_PORT , F81866_UNLOCK);
outportb(F81866_INDEX_PORT , F81866_UNLOCK);
}
//---------------------------------------------------------------------------
void Lock_F81866 (void)
{
outportb(F81866_INDEX_PORT , F81866_LOCK);
}
//---------------------------------------------------------------------------
void Set_F81866_LD( unsigned char LD)
{
Unlock_F81866();
outportb(F81866_INDEX_PORT , F81866_REG_LD);
outportb(F81866_DAT A_PORT , LD);
Lock_F81866();
}
//---------------------------------------------------------------------------
void Set_F81866_Reg( unsigned char REG, unsigned char DAT A)
{
Unlock_F81866();
outportb(F81866_INDEX_PORT , REG);
outportb(F81866_DAT A_PORT , DAT A);