2009-11-10 09:50:32 +01:00
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/*
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2010-02-18 07:03:55 +01:00
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* Copyright (C) 2002-2010 The DOSBox Team
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2009-11-10 09:50:32 +01:00
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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
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* along with this program; 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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*/
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#ifndef DOSBOX_PIC_H
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#define DOSBOX_PIC_H
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/* CPU Cycle Timing */
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extern Bit32s CPU_Cycles;
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extern Bit32s CPU_CycleLeft;
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extern Bit32s CPU_CycleMax;
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typedef void (PIC_EOIHandler) (void);
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typedef void (* PIC_EventHandler)(Bitu val);
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#define PIC_MAXIRQ 15
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#define PIC_NOIRQ 0xFF
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extern Bitu PIC_IRQCheck;
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extern Bitu PIC_IRQActive;
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extern Bitu PIC_Ticks;
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static INLINE float PIC_TickIndex(void) {
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return (CPU_CycleMax-CPU_CycleLeft-CPU_Cycles)/(float)CPU_CycleMax;
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}
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static INLINE Bits PIC_TickIndexND(void) {
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return CPU_CycleMax-CPU_CycleLeft-CPU_Cycles;
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}
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static INLINE Bits PIC_MakeCycles(double amount) {
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return (Bits)(CPU_CycleMax*amount);
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}
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static INLINE double PIC_FullIndex(void) {
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return PIC_Ticks+(double)PIC_TickIndex();
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}
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void PIC_ActivateIRQ(Bitu irq);
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void PIC_DeActivateIRQ(Bitu irq);
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void PIC_runIRQs(void);
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bool PIC_RunQueue(void);
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//Delay in milliseconds
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void PIC_AddEvent(PIC_EventHandler handler,float delay,Bitu val=0);
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void PIC_RemoveEvents(PIC_EventHandler handler);
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void PIC_RemoveSpecificEvents(PIC_EventHandler handler, Bitu val);
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void PIC_SetIRQMask(Bitu irq, bool masked);
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#endif
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