89522c30d8
- bx_shadow_bool_c: removed unused bitnum feature and changed data type. - Changed return type of memory handlers to bool. - Modified virtual timer, PIC and PIT code.
85 lines
2.4 KiB
C++
85 lines
2.4 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id$
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/////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2001-2021 The Bochs Project
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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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#ifndef _BX_PIT_H
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#define _BX_PIT_H
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#include "bochs.h"
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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 thePit->
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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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class bx_pit_c : public bx_pit_stub_c {
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public:
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bx_pit_c();
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virtual ~bx_pit_c();
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virtual void init(void);
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virtual void reset(unsigned type);
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virtual void register_state(void);
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virtual void after_restore_state(void);
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virtual void enable_irq(bool enabled) {
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s.irq_enabled = enabled;
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}
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#if BX_DEBUGGER
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virtual void debug_dump(int argc, char **argv);
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#endif
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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 len);
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void write(Bit32u addr, Bit32u Value, unsigned len);
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#endif
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struct s_type {
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pit_82C54 timer;
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bool speaker_data_on;
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bool speaker_active;
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bool speaker_level;
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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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Bit64u total_usec;
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int timer_handle[3];
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bool irq_enabled;
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} s;
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bool is_realtime;
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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 bool periodic(Bit32u usec_delta);
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BX_PIT_SMF void irq_handler(bool value);
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BX_PIT_SMF void speaker_handler(bool value);
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BX_PIT_SMF Bit16u get_timer(int Timer);
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BX_PIT_SMF Bit16u new_timer_count(int Timer);
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};
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#endif // #ifndef _BX_PIT_H
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