mirror of
https://github.com/dborth/snes9xgx.git
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273 lines
8.1 KiB
C
273 lines
8.1 KiB
C
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/**********************************************************************************
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Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
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(c) Copyright 1996 - 2002 Gary Henderson (gary.henderson@ntlworld.com) and
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Jerremy Koot (jkoot@snes9x.com)
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(c) Copyright 2002 - 2004 Matthew Kendora
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(c) Copyright 2002 - 2005 Peter Bortas (peter@bortas.org)
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(c) Copyright 2004 - 2005 Joel Yliluoma (http://iki.fi/bisqwit/)
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(c) Copyright 2001 - 2006 John Weidman (jweidman@slip.net)
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(c) Copyright 2002 - 2006 Brad Jorsch (anomie@users.sourceforge.net),
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funkyass (funkyass@spam.shaw.ca),
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Kris Bleakley (codeviolation@hotmail.com),
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Nach (n-a-c-h@users.sourceforge.net), and
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zones (kasumitokoduck@yahoo.com)
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BS-X C emulator code
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(c) Copyright 2005 - 2006 Dreamer Nom,
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zones
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C4 x86 assembler and some C emulation code
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(c) Copyright 2000 - 2003 _Demo_ (_demo_@zsnes.com),
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Nach,
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zsKnight (zsknight@zsnes.com)
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C4 C++ code
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(c) Copyright 2003 - 2006 Brad Jorsch,
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Nach
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DSP-1 emulator code
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(c) Copyright 1998 - 2006 _Demo_,
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Andreas Naive (andreasnaive@gmail.com)
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Gary Henderson,
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Ivar (ivar@snes9x.com),
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John Weidman,
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Kris Bleakley,
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Matthew Kendora,
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Nach,
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neviksti (neviksti@hotmail.com)
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DSP-2 emulator code
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(c) Copyright 2003 John Weidman,
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Kris Bleakley,
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Lord Nightmare (lord_nightmare@users.sourceforge.net),
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Matthew Kendora,
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neviksti
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DSP-3 emulator code
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(c) Copyright 2003 - 2006 John Weidman,
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Kris Bleakley,
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Lancer,
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z80 gaiden
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DSP-4 emulator code
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(c) Copyright 2004 - 2006 Dreamer Nom,
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John Weidman,
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Kris Bleakley,
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Nach,
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z80 gaiden
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OBC1 emulator code
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(c) Copyright 2001 - 2004 zsKnight,
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pagefault (pagefault@zsnes.com),
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Kris Bleakley,
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Ported from x86 assembler to C by sanmaiwashi
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SPC7110 and RTC C++ emulator code
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(c) Copyright 2002 Matthew Kendora with research by
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zsKnight,
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John Weidman,
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Dark Force
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S-DD1 C emulator code
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(c) Copyright 2003 Brad Jorsch with research by
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Andreas Naive,
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John Weidman
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S-RTC C emulator code
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(c) Copyright 2001-2006 byuu,
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John Weidman
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ST010 C++ emulator code
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(c) Copyright 2003 Feather,
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John Weidman,
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Kris Bleakley,
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Matthew Kendora
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Super FX x86 assembler emulator code
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(c) Copyright 1998 - 2003 _Demo_,
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pagefault,
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zsKnight,
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Super FX C emulator code
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(c) Copyright 1997 - 1999 Ivar,
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Gary Henderson,
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John Weidman
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Sound DSP emulator code is derived from SNEeSe and OpenSPC:
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(c) Copyright 1998 - 2003 Brad Martin
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(c) Copyright 1998 - 2006 Charles Bilyue'
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SH assembler code partly based on x86 assembler code
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(c) Copyright 2002 - 2004 Marcus Comstedt (marcus@mc.pp.se)
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2xSaI filter
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(c) Copyright 1999 - 2001 Derek Liauw Kie Fa
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HQ2x filter
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(c) Copyright 2003 Maxim Stepin (maxim@hiend3d.com)
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Specific ports contains the works of other authors. See headers in
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individual files.
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Snes9x homepage: http://www.snes9x.com
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Permission to use, copy, modify and/or distribute Snes9x in both binary
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and source form, for non-commercial purposes, is hereby granted without
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fee, providing that this license information and copyright notice appear
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with all copies and any derived work.
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This software is provided 'as-is', without any express or implied
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warranty. In no event shall the authors be held liable for any damages
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arising from the use of this software or it's derivatives.
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Snes9x is freeware for PERSONAL USE only. Commercial users should
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seek permission of the copyright holders first. Commercial use includes,
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but is not limited to, charging money for Snes9x or software derived from
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Snes9x, including Snes9x or derivatives in commercial game bundles, and/or
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using Snes9x as a promotion for your commercial product.
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The copyright holders request that bug fixes and improvements to the code
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should be forwarded to them so everyone can benefit from the modifications
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in future versions.
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Super NES and Super Nintendo Entertainment System are trademarks of
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Nintendo Co., Limited and its subsidiary companies.
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**********************************************************************************/
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#ifndef _apu_h_
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#define _apu_h_
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#include "spc700.h"
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struct SIAPU
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{
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uint8 *PC;
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uint8 *RAM;
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uint8 *DirectPage;
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bool8 APUExecuting;
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uint8 Bit;
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uint32 Address;
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uint8 *WaitAddress1;
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uint8 *WaitAddress2;
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uint32 WaitCounter;
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uint8 *ShadowRAM;
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uint8 *CachedSamples;
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uint8 _Carry;
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uint8 _Zero;
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uint8 _Overflow;
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uint32 TimerErrorCounter;
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int32 NextAPUTimerPos;
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int32 APUTimerCounter;
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uint32 Scanline;
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int32 OneCycle;
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int32 TwoCycles;
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};
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struct SAPU
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{
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int32 Cycles;
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bool8 ShowROM;
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uint32 Flags;
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uint8 KeyedChannels;
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uint8 OutPorts [4];
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uint8 DSP [0x80];
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uint8 ExtraRAM [64];
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uint16 Timer [3];
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uint16 TimerTarget [3];
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bool8 TimerEnabled [3];
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bool8 TimerValueWritten [3];
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};
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EXTERN_C struct SAPU APU;
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EXTERN_C struct SIAPU IAPU;
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extern int spc_is_dumping;
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extern int spc_is_dumping_temp;
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extern uint8 spc_dump_dsp[0x100];
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STATIC inline void S9xAPUUnpackStatus()
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{
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IAPU._Zero = ((APURegisters.P & Zero) == 0) | (APURegisters.P & Negative);
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IAPU._Carry = (APURegisters.P & Carry);
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IAPU._Overflow = (APURegisters.P & Overflow) >> 6;
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}
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STATIC inline void S9xAPUPackStatus()
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{
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APURegisters.P &= ~(Zero | Negative | Carry | Overflow);
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APURegisters.P |= IAPU._Carry | ((IAPU._Zero == 0) << 1) |
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(IAPU._Zero & 0x80) | (IAPU._Overflow << 6);
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}
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START_EXTERN_C
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void S9xResetAPU (void);
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bool8 S9xInitAPU ();
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void S9xDeinitAPU ();
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void S9xDecacheSamples ();
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int S9xTraceAPU ();
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int S9xAPUOPrint (char *buffer, uint16 Address);
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void S9xSetAPUControl (uint8 byte);
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void S9xSetAPUDSP (uint8 byte);
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uint8 S9xGetAPUDSP ();
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void S9xSetAPUTimer (uint16 Address, uint8 byte);
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void S9xUpdateAPUTimer (void);
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bool8 S9xInitSound (int quality, bool8 stereo, int buffer_size);
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void S9xOpenCloseSoundTracingFile (bool8);
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void S9xPrintAPUState ();
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extern int32 S9xAPUCycles [256]; // Scaled cycle lengths
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extern int32 S9xAPUCycleLengths [256]; // Raw data.
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extern void (*S9xApuOpcodes [256]) (void);
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END_EXTERN_C
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#define APU_VOL_LEFT 0x00
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#define APU_VOL_RIGHT 0x01
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#define APU_P_LOW 0x02
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#define APU_P_HIGH 0x03
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#define APU_SRCN 0x04
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#define APU_ADSR1 0x05
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#define APU_ADSR2 0x06
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#define APU_GAIN 0x07
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#define APU_ENVX 0x08
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#define APU_OUTX 0x09
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#define APU_MVOL_LEFT 0x0c
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#define APU_MVOL_RIGHT 0x1c
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#define APU_EVOL_LEFT 0x2c
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#define APU_EVOL_RIGHT 0x3c
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#define APU_KON 0x4c
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#define APU_KOFF 0x5c
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#define APU_FLG 0x6c
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#define APU_ENDX 0x7c
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#define APU_EFB 0x0d
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#define APU_PMON 0x2d
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#define APU_NON 0x3d
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#define APU_EON 0x4d
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#define APU_DIR 0x5d
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#define APU_ESA 0x6d
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#define APU_EDL 0x7d
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#define APU_C0 0x0f
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#define APU_C1 0x1f
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#define APU_C2 0x2f
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#define APU_C3 0x3f
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#define APU_C4 0x4f
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#define APU_C5 0x5f
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#define APU_C6 0x6f
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#define APU_C7 0x7f
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#define APU_SOFT_RESET 0x80
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#define APU_MUTE 0x40
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#define APU_ECHO_DISABLED 0x20
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#define FREQUENCY_MASK 0x3fff
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#endif
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