69 lines
2.7 KiB
C++
69 lines
2.7 KiB
C++
/***************************************************************************
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* Copyright (C) 2007 by Sindre Aamås *
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* aamas@stud.ntnu.no *
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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 version 2 as *
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* published by the Free Software Foundation. *
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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 version 2 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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* version 2 along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#ifndef TIMA_H
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#define TIMA_H
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#include "interruptrequester.h"
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namespace gambatte {
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class TimaInterruptRequester {
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InterruptRequester &intreq;
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public:
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explicit TimaInterruptRequester(InterruptRequester &intreq) : intreq(intreq) {}
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void flagIrq() const { intreq.flagIrq(4); }
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unsigned long nextIrqEventTime() const { return intreq.eventTime(TIMA); }
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void setNextIrqEventTime(const unsigned long time) const { intreq.setEventTime<TIMA>(time); }
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};
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class Tima {
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unsigned long lastUpdate_;
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unsigned long tmatime_;
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unsigned char tima_;
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unsigned char tma_;
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unsigned char tac_;
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void updateIrq(const unsigned long cc, const TimaInterruptRequester timaIrq) {
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while (cc >= timaIrq.nextIrqEventTime())
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doIrqEvent(timaIrq);
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}
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void updateTima(unsigned long cc);
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public:
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Tima();
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void loadState(const SaveState &, TimaInterruptRequester timaIrq);
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void resetCc(unsigned long oldCc, unsigned long newCc, TimaInterruptRequester timaIrq);
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void setTima(unsigned tima, unsigned long cc, TimaInterruptRequester timaIrq);
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void setTma(unsigned tma, unsigned long cc, TimaInterruptRequester timaIrq);
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void setTac(unsigned tac, unsigned long cc, TimaInterruptRequester timaIrq);
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unsigned tima(unsigned long cc);
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void doIrqEvent(TimaInterruptRequester timaIrq);
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template<bool isReader>void SyncState(NewState *ns);
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};
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}
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#endif
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