mirror of
https://github.com/retro100/dosbox-wii.git
synced 2024-09-29 18:28:35 +02:00
69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
/*
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* Copyright (C) 2002 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 Library 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 __PIC_H
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#define __PIC_H
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/* CPU Cycle Timing */
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extern Bits CPU_Cycles;
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extern Bits CPU_CycleLeft;
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extern Bits CPU_CycleMax;
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typedef void (PIC_EOIHandler) (void);
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typedef void (* PIC_EventHandler)(void);
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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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INLINE Bitu PIC_Index(void) {
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return ((CPU_CycleMax-CPU_CycleLeft-CPU_Cycles)*1000)/CPU_CycleMax;
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}
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INLINE Bits PIC_MakeCycles(Bitu amount) {
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return (CPU_CycleMax*amount)/1000;
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}
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INLINE Bit64u PIC_MicroCount(void) {
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return PIC_Ticks*1000+PIC_Index();
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}
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void PIC_ActivateIRQ(Bit32u irq);
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void PIC_DeActivateIRQ(Bit32u irq);
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void PIC_runIRQs(void);
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void PIC_RegisterIRQ(Bit32u irq,PIC_EOIHandler handler,char * name);
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void PIC_FreeIRQ(Bit32u irq);
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bool PIC_RunQueue(void);
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void PIC_AddIRQ(Bitu irq,Bitu delay);
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void PIC_AddEvent(PIC_EventHandler handler,Bitu delay);
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void PIC_RemoveEvents(PIC_EventHandler handler);
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#endif
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