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/*
* Copyright (C) 2002-2004 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.
*/
#ifndef __PIC_H
#define __PIC_H
/* CPU Cycle Timing */
extern Bits CPU_Cycles;
extern Bits CPU_CycleLeft;
extern Bits CPU_CycleMax;
typedef void (PIC_EOIHandler) (void);
typedef void (* PIC_EventHandler)(Bitu val);
#define PIC_MAXIRQ 15
#define PIC_NOIRQ 0xFF
extern Bitu PIC_IRQCheck;
extern Bitu PIC_IRQActive;
extern Bitu PIC_Ticks;
INLINE float PIC_TickIndex(void) {
return (CPU_CycleMax-CPU_CycleLeft-CPU_Cycles)/(float)CPU_CycleMax;
}
INLINE Bits PIC_MakeCycles(double amount) {
return (Bits)(CPU_CycleMax*amount);
}
INLINE double PIC_FullIndex(void) {
return PIC_Ticks+PIC_TickIndex();
}
void PIC_ActivateIRQ(Bitu irq);
void PIC_DeActivateIRQ(Bitu irq);
void PIC_runIRQs(void);
bool PIC_RunQueue(void);
//Delay in milliseconds
void PIC_AddEvent(PIC_EventHandler handler,float delay,Bitu val=0);
void PIC_RemoveEvents(PIC_EventHandler handler);
void PIC_SetIRQMask(Bitu irq, bool masked);
#endif
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