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49 lines
1.5 KiB
C
49 lines
1.5 KiB
C
/*
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* Copyright (C) 2002-2021 The DOSBox Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef DOSBOX_TIMER_H
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#define DOSBOX_TIMER_H
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/* underlying clock rate in HZ */
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#include <SDL.h>
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#define PIT_TICK_RATE_IBM 1193182
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#define PIT_TICK_RATE_PC98_8MHZ 1996800
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#define PIT_TICK_RATE_PC98_10MHZ 2457600
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extern unsigned long PIT_TICK_RATE;
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#define GetTicks() SDL_GetTicks()
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typedef void (*TIMER_TickHandler)(void);
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/* Register a function that gets called everytime if 1 or more ticks pass */
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void TIMER_AddTickHandler(TIMER_TickHandler handler);
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void TIMER_DelTickHandler(TIMER_TickHandler handler);
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/* This will add 1 milliscond to all timers */
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void TIMER_AddTick(void);
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/* Functions for the system control port 61h */
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bool TIMER_GetOutput2();
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void TIMER_SetGate2(bool in);
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#endif
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