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/*
* Copyright (C) 2002-2010 The DOSBox Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* $Id: inout.h,v 1.13 2009-05-27 09:15:41 qbix79 Exp $ */
#ifndef DOSBOX_INOUT_H
#define DOSBOX_INOUT_H
#define IO_MAX (64*1024+3)
#define IO_MB 0x1
#define IO_MW 0x2
#define IO_MD 0x4
#define IO_MA (IO_MB | IO_MW | IO_MD )
typedef Bitu IO_ReadHandler(Bitu port,Bitu iolen);
typedef void IO_WriteHandler(Bitu port,Bitu val,Bitu iolen);
extern IO_WriteHandler * io_writehandlers[3][IO_MAX];
extern IO_ReadHandler * io_readhandlers[3][IO_MAX];
void IO_RegisterReadHandler(Bitu port,IO_ReadHandler * handler,Bitu mask,Bitu range=1);
void IO_RegisterWriteHandler(Bitu port,IO_WriteHandler * handler,Bitu mask,Bitu range=1);
void IO_FreeReadHandler(Bitu port,Bitu mask,Bitu range=1);
void IO_FreeWriteHandler(Bitu port,Bitu mask,Bitu range=1);
void IO_WriteB(Bitu port,Bitu val);
void IO_WriteW(Bitu port,Bitu val);
void IO_WriteD(Bitu port,Bitu val);
Bitu IO_ReadB(Bitu port);
Bitu IO_ReadW(Bitu port);
Bitu IO_ReadD(Bitu port);
/* Classes to manage the IO objects created by the various devices.
* The io objects will remove itself on destruction.*/
class IO_Base{
protected:
bool installed;
Bitu m_port, m_mask,m_range;
public:
IO_Base():installed(false){};
};
class IO_ReadHandleObject: private IO_Base{
public:
void Install(Bitu port,IO_ReadHandler * handler,Bitu mask,Bitu range=1);
~IO_ReadHandleObject();
};
class IO_WriteHandleObject: private IO_Base{
public:
void Install(Bitu port,IO_WriteHandler * handler,Bitu mask,Bitu range=1);
~IO_WriteHandleObject();
};
static INLINE void IO_Write(Bitu port,Bit8u val) {
IO_WriteB(port,val);
}
static INLINE Bit8u IO_Read(Bitu port){
return (Bit8u)IO_ReadB(port);
}
#endif
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