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https://github.com/wavemotion-dave/A7800DS.git
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95 lines
3.4 KiB
C
95 lines
3.4 KiB
C
// ----------------------------------------------------------------------------
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// ___ ___ ___ ___ ___ ____ ___ _ _
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// /__/ /__/ / / /__ /__/ /__ / /_ / |/ /
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// / / \ /__/ ___/ ___/ ___/ / /__ / / emulator
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//
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// ----------------------------------------------------------------------------
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// Copyright 2005 Greg Stanton
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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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// ----------------------------------------------------------------------------
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// TiaSound is Copyright(c) 1997 by Ron Fries
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//
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// This library is free software; you can redistribute it and/or modify it
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// under the terms of version 2 of the GNU Library General Public License
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// as published by the Free Software Foundation.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library
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// General Public License for more details.
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// To obtain a copy of the GNU Library General Public License, write to the
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// Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//
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// Any permitted reproduction of these routines, in whole or in part, must
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// bear this legend.
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// ----------------------------------------------------------------------------
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// Tia.h
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// ----------------------------------------------------------------------------
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#ifndef TIA_H
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#define TIA_H
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#include "Equates.h"
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#include "shared.h"
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#define SNDLENGTH (1024)
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extern u16 tia_buffer[];
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extern byte tia_audc[2];
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extern byte tia_audf[2];
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extern byte tia_audv[2];
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extern void tia_Reset( );
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extern void tia_SetRegister(word address, byte data);
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extern void tia_Clear( );
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extern void tia_Process(void);
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extern u16 tia_ProcessNow(void);
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extern byte tia_volume[2];
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extern uint tia_counter[2];
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extern uint tia_counterMax[2];
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extern u16 tia_wait;
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extern u32 myTiaBufIdx;
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inline void tia_MemoryChannel(byte channel)
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{
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byte frequency = 0;
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if(tia_audc[channel] == 0)
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{
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tia_volume[channel] = tia_audv[channel];
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}
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else
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{
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frequency = tia_audf[channel] + 1;
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if(tia_audc[channel] > 11)
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{
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frequency *= 3;
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}
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}
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if(frequency != tia_counterMax[channel])
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{
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tia_counterMax[channel] = frequency;
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if(tia_counter[channel] == 0 || frequency == 0)
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{
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tia_counter[channel] = frequency;
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}
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}
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}
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#endif
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