110 lines
2.6 KiB
C++
110 lines
2.6 KiB
C++
/******************************************************************************/
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/* Mednafen Virtual Boy Emulation Module */
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/******************************************************************************/
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/* vsu.h:
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** Copyright (C) 2010-2016 Mednafen Team
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**
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** This program is free software; you can redistribute it and/or
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** modify it under the terms of the GNU General Public License
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** as published by the Free Software Foundation; either version 2
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** of the License, or (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 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 __VB_VSU_H
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#define __VB_VSU_H
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#include "blip_buf.h"
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#include "../../dispatch.h"
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class VSU
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{
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public:
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int last_output[6][2];
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blip_buffer_t* bb[2];
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DivDispatchOscBuffer* oscBuf[6];
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VSU();
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~VSU();
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void SetSoundRate(double rate);
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void Power(void);
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void Write(int timestamp, unsigned int A, unsigned char V);
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int EndFrame(int timestamp);
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unsigned char PeekWave(const unsigned int which, unsigned int Address);
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void PokeWave(const unsigned int which, unsigned int Address, unsigned char value);
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unsigned char PeekModWave(unsigned int Address);
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void PokeModWave(unsigned int Address, unsigned char value);
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private:
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void CalcCurrentOutput(int ch, int &left, int &right);
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void Update(int timestamp);
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unsigned char IntlControl[6];
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unsigned char LeftLevel[6];
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unsigned char RightLevel[6];
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unsigned short Frequency[6];
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unsigned short EnvControl[6]; // Channel 5/6 extra functionality tacked on too.
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unsigned char RAMAddress[6];
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unsigned char SweepControl;
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unsigned char WaveData[5][0x20];
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unsigned char ModData[0x20];
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//
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//
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//
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int EffFreq[6];
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int EnvelopeValue[6];
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int EnvelopeReload[6];
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int WavePos[6];
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int ModWavePos;
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int LatcherClockDivider[6];
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int FreqCounter[6];
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int IntervalCounter[6];
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int EnvelopeCounter[6];
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int SweepModCounter;
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int EffectsClockDivider[6];
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int IntervalClockDivider[6];
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int EnvelopeClockDivider[6];
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int SweepModClockDivider;
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public:
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int EnvelopeModMask[6];
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int ModState;
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int ModLock;
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private:
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int NoiseLatcherClockDivider;
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unsigned int NoiseLatcher;
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unsigned int lfsr;
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int last_ts;
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};
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#endif
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