57273620e6
This is basically the opposite of the slowdown timer. Instead of trying to keep the PIT ticks in sync with bochs time, we keep them in sync with REAL time. This is bad because it creates unreproducible fails, but it's good if you want to run bochs at maximum speed on your machine. However, bochs will take all of the available resources from the machine also. DO NOT use this with the slowdown timer. Results would be unpredictable.
104 lines
2.9 KiB
C++
104 lines
2.9 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id: pit_wrap.h,v 1.8 2002-02-07 21:22:55 yakovlev Exp $
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/////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2001 MandrakeSoft S.A.
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//
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// MandrakeSoft S.A.
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// 43, rue d'Aboukir
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// 75002 Paris - France
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// http://www.linux-mandrake.com/
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// http://www.mandrakesoft.com/
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#ifndef _BX_PIT_WRAP_H
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#define _BX_PIT_WRAP_H
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#include "bochs.h"
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#if BX_USE_NEW_PIT
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#include "pit82c54.h"
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#if BX_USE_PIT_SMF
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# define BX_PIT_SMF static
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# define BX_PIT_THIS bx_pit.
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#else
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# define BX_PIT_SMF
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# define BX_PIT_THIS this->
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#endif
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#ifdef OUT
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# undef OUT
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#endif
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class bx_pit_c : public logfunctions {
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public:
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bx_pit_c( void );
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~bx_pit_c( void );
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BX_PIT_SMF int init( bx_devices_c *);
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BX_PIT_SMF Boolean periodic( Bit32u usec_delta );
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BX_PIT_SMF int SaveState( class state_file *fd );
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BX_PIT_SMF int LoadState( class state_file *fd );
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private:
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static Bit32u read_handler(void *this_ptr, Bit32u address, unsigned io_len);
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static void write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len);
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#if !BX_USE_PIT_SMF
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Bit32u read( Bit32u addr, unsigned int len );
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void write( Bit32u addr, Bit32u Value, unsigned int len );
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#endif
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struct s_type {
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pit_82C54 timer;
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Bit8u speaker_data_on;
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Boolean refresh_clock_div2;
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int timer_handle[3];
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Bit64u last_usec;
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Bit32u last_next_event_time;
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Bit64u total_ticks;
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#if BX_USE_REALTIME_PIT
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Bit64u usec_per_second;
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Bit64u ticks_per_second;
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Bit64u total_sec;
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Bit64u last_time;
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Bit64u last_sec_usec;
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#else
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Bit64u total_usec;
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#endif
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} s;
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bx_devices_c *devices;
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static void timer_handler(void *this_ptr);
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BX_PIT_SMF void handle_timer();
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BX_PIT_SMF void write_count_reg( Bit8u value, unsigned timerid );
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BX_PIT_SMF Bit8u read_counter( unsigned timerid );
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BX_PIT_SMF void latch( unsigned timerid );
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BX_PIT_SMF void set_GATE(unsigned pit_id, unsigned value);
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BX_PIT_SMF void start(unsigned timerid);
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BX_PIT_SMF void second_update_data(void);
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};
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extern bx_pit_c bx_pit;
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#endif // #if BX_USE_NEW_PIT
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#endif // #ifndef _BX_PIT_WRAP_H
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