User`s manual

ManualsBrandsRosch Computer ManualsComputer equipmentMB770

INSTALLATIONS

MB770 User’s Manual 27

Filename：W697hf.cpp

//===========================================================================

// 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 "W697HF.H"

#include <dos.h>

//===========================================================================

unsigned int W697HF_BASE;

void Unlock_W697HF (void);

void Lock_W697HF (void);

//===========================================================================

unsigned int Init_W697HF(void)

{

unsigned int result;

W697HF_BASE = 0x2E;

result = W697HF_BASE;

if (Get_W697HF_Reg(0x20) == 0x60)

{ goto Init_Finish; }

W697HF_BASE = 0x4E;

result = W697HF_BASE;

if (Get_W697HF_Reg(0x20) == 0x60)

{ goto Init_Finish; }

W697HF_BASE = 0x00;

result = W697HF_BASE;

Init_Finish:

return (result);

}

//===========================================================================

void Unlock_W697HF (void)

{

outportb(W697HF_INDEX_PORT, W697HF_UNLOCK);

}

//===========================================================================

void Lock_W697HF (void)

{

outportb(W697HF_INDEX_PORT, W697HF_LOCK);

}

//===========================================================================

void Set_W697HF_LD( unsigned char LD)

{

Unlock_W697HF();

outportb(W697HF_INDEX_PORT, W697HF_REG_LD);

outportb(W697HF_DATA_PORT, LD);

Lock_W697HF();

}

//===========================================================================

void Set_W697HF_Reg( unsigned char REG, unsigned char DATA)

{

Unlock_W697HF();

outportb(W697HF_INDEX_PORT, REG);

outportb(W697HF_DATA_PORT, DATA);

Lock_W697HF();

}

//===========================================================================

unsigned char Get_W697HF_Reg(unsigned char REG)