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/////////////////////////////////////////////////////////////////////////
// $Id: pit.h,v 1.10 2002/10/25 11:44:40 bdenney Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2001 MandrakeSoft S.A.
//
// MandrakeSoft S.A.
// 43, rue d'Aboukir
// 75002 Paris - France
// http://www.linux-mandrake.com/
// http://www.mandrakesoft.com/
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#ifndef _BX_PIT_H
#define _BX_PIT_H
#include "config.h"
#if (BX_USE_NEW_PIT==0)
#if BX_USE_PIT_SMF
# define BX_PIT_SMF static
# define BX_PIT_THIS bx_pit.
#else
# define BX_PIT_SMF
# define BX_PIT_THIS this->
#endif
#ifdef OUT
# undef OUT
#endif
typedef struct {
Bit8u mode;
Bit8u latch_mode;
Bit16u input_latch_value;
bx_bool input_latch_toggle;
Bit16u output_latch_value;
bx_bool output_latch_toggle;
bx_bool output_latch_full;
Bit16u counter_max;
Bit16u counter;
bx_bool bcd_mode;
bx_bool active;
bx_bool GATE; // GATE input pin
bx_bool OUT; // OUT output pin
} bx_pit_t;
class bx_pit_c : public logfunctions {
public:
bx_pit_c( void );
~bx_pit_c( void );
BX_PIT_SMF int init(void);
BX_PIT_SMF void reset( unsigned type);
BX_PIT_SMF bx_bool periodic( Bit32u usec_delta );
BX_PIT_SMF int SaveState( class state_file *fd );
BX_PIT_SMF int LoadState( class state_file *fd );
private:
static Bit32u read_handler(void *this_ptr, Bit32u address, unsigned io_len);
static void write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len);
#if !BX_USE_PIT_SMF
Bit32u read( Bit32u addr, unsigned int len );
void write( Bit32u addr, Bit32u Value, unsigned int len );
#endif
struct s_type {
bx_pit_t timer[3];
Bit8u speaker_data_on;
bx_bool refresh_clock_div2;
int timer_handle[3];
} s;
BX_PIT_SMF void write_count_reg( Bit8u value, unsigned timerid );
BX_PIT_SMF Bit8u read_counter( unsigned timerid );
BX_PIT_SMF void latch( unsigned timerid );
BX_PIT_SMF void set_GATE(unsigned pit_id, unsigned value);
BX_PIT_SMF void start(unsigned timerid);
};
extern bx_pit_c bx_pit;
#endif // #if (BX_USE_NEW_PIT==0)
#endif // #ifndef _BX_PIT_H
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