2010-09-25 17:46:12 +02:00
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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),
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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 funkyass (funkyass@spam.shaw.ca),
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Kris Bleakley (codeviolation@hotmail.com)
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(c) Copyright 2002 - 2010 Brad Jorsch (anomie@users.sourceforge.net),
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Nach (n-a-c-h@users.sourceforge.net),
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2011-04-11 21:51:20 +02:00
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(c) Copyright 2002 - 2011 zones (kasumitokoduck@yahoo.com)
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2010-09-25 17:46:12 +02:00
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(c) Copyright 2006 - 2007 nitsuja
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2017-11-17 23:00:58 +01:00
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(c) Copyright 2009 - 2017 BearOso,
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2010-09-25 17:46:12 +02:00
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OV2
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2017-11-17 23:00:58 +01:00
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(c) Copyright 2017 qwertymodo
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(c) Copyright 2011 - 2017 Hans-Kristian Arntzen,
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2016-10-15 18:31:26 +02:00
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Daniel De Matteis
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(Under no circumstances will commercial rights be given)
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2010-09-25 17:46:12 +02:00
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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 used in 1.39-1.51
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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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SPC7110 and RTC C++ emulator code used in 1.52+
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(c) Copyright 2009 byuu,
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neviksti
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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 emulator code used in 1.5-1.51
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(c) Copyright 1998 - 2003 Brad Martin
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(c) Copyright 1998 - 2006 Charles Bilyue'
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Sound emulator code used in 1.52+
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(c) Copyright 2004 - 2007 Shay Green (gblargg@gmail.com)
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2016-10-07 19:47:07 +02:00
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S-SMP emulator code used in 1.54+
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(c) Copyright 2016 byuu
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2010-09-25 17:46:12 +02:00
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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, HQ3x, HQ4x filters
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(c) Copyright 2003 Maxim Stepin (maxim@hiend3d.com)
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NTSC filter
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(c) Copyright 2006 - 2007 Shay Green
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GTK+ GUI code
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2017-11-17 23:00:58 +01:00
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(c) Copyright 2004 - 2017 BearOso
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2010-09-25 17:46:12 +02:00
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Win32 GUI code
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(c) Copyright 2003 - 2006 blip,
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funkyass,
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Matthew Kendora,
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Nach,
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nitsuja
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2017-11-17 23:00:58 +01:00
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(c) Copyright 2009 - 2017 OV2
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2010-09-25 17:46:12 +02:00
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Mac OS GUI code
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(c) Copyright 1998 - 2001 John Stiles
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2011-04-11 21:51:20 +02:00
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(c) Copyright 2001 - 2011 zones
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2010-09-25 17:46:12 +02:00
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2016-10-15 18:31:26 +02:00
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Libretro port
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2017-11-17 23:00:58 +01:00
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(c) Copyright 2011 - 2017 Hans-Kristian Arntzen,
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2016-10-15 18:31:26 +02:00
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Daniel De Matteis
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(Under no circumstances will commercial rights be given)
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2010-09-25 17:46:12 +02:00
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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 _SA1_H_
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#define _SA1_H_
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struct SSA1Registers
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{
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uint8 DB;
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pair P;
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pair A;
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pair D;
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pair S;
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pair X;
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pair Y;
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PC_t PC;
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};
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struct SSA1
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{
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struct SOpcodes *S9xOpcodes;
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uint8 *S9xOpLengths;
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uint8 _Carry;
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uint8 _Zero;
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uint8 _Negative;
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uint8 _Overflow;
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uint32 ShiftedPB;
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uint32 ShiftedDB;
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uint32 Flags;
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2010-11-14 13:29:48 +01:00
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int32 Cycles;
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int32 PrevCycles;
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2010-09-25 17:46:12 +02:00
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uint8 *PCBase;
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bool8 WaitingForInterrupt;
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uint8 *Map[MEMMAP_NUM_BLOCKS];
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uint8 *WriteMap[MEMMAP_NUM_BLOCKS];
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uint8 *BWRAM;
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bool8 in_char_dma;
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2010-11-14 13:29:48 +01:00
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bool8 TimerIRQLastState;
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uint16 HTimerIRQPos;
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uint16 VTimerIRQPos;
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int16 HCounter;
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int16 VCounter;
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int16 PrevHCounter;
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int32 MemSpeed;
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int32 MemSpeedx2;
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2010-09-25 17:46:12 +02:00
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int32 arithmetic_op;
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uint16 op1;
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uint16 op2;
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uint64 sum;
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bool8 overflow;
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2010-09-25 17:46:12 +02:00
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uint8 VirtualBitmapFormat;
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uint8 variable_bit_pos;
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};
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#define SA1CheckCarry() (SA1._Carry)
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#define SA1CheckZero() (SA1._Zero == 0)
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#define SA1CheckIRQ() (SA1Registers.PL & IRQ)
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#define SA1CheckDecimal() (SA1Registers.PL & Decimal)
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#define SA1CheckIndex() (SA1Registers.PL & IndexFlag)
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#define SA1CheckMemory() (SA1Registers.PL & MemoryFlag)
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#define SA1CheckOverflow() (SA1._Overflow)
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#define SA1CheckNegative() (SA1._Negative & 0x80)
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#define SA1CheckEmulation() (SA1Registers.P.W & Emulation)
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#define SA1SetFlags(f) (SA1Registers.P.W |= (f))
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#define SA1ClearFlags(f) (SA1Registers.P.W &= ~(f))
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#define SA1CheckFlag(f) (SA1Registers.PL & (f))
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extern struct SSA1Registers SA1Registers;
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extern struct SSA1 SA1;
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extern uint8 SA1OpenBus;
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extern struct SOpcodes S9xSA1OpcodesM1X1[256];
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extern struct SOpcodes S9xSA1OpcodesM1X0[256];
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extern struct SOpcodes S9xSA1OpcodesM0X1[256];
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extern struct SOpcodes S9xSA1OpcodesM0X0[256];
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extern uint8 S9xOpLengthsM1X1[256];
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extern uint8 S9xOpLengthsM1X0[256];
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extern uint8 S9xOpLengthsM0X1[256];
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extern uint8 S9xOpLengthsM0X0[256];
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uint8 S9xSA1GetByte (uint32);
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void S9xSA1SetByte (uint8, uint32);
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uint16 S9xSA1GetWord (uint32, enum s9xwrap_t w = WRAP_NONE);
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void S9xSA1SetWord (uint16, uint32, enum s9xwrap_t w = WRAP_NONE, enum s9xwriteorder_t o = WRITE_01);
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void S9xSA1SetPCBase (uint32);
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uint8 S9xGetSA1 (uint32);
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void S9xSetSA1 (uint8, uint32);
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void S9xSA1Init (void);
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void S9xSA1MainLoop (void);
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void S9xSA1PostLoadState (void);
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static inline void S9xSA1UnpackStatus (void)
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{
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SA1._Zero = (SA1Registers.PL & Zero) == 0;
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SA1._Negative = (SA1Registers.PL & Negative);
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SA1._Carry = (SA1Registers.PL & Carry);
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SA1._Overflow = (SA1Registers.PL & Overflow) >> 6;
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}
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static inline void S9xSA1PackStatus (void)
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{
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SA1Registers.PL &= ~(Zero | Negative | Carry | Overflow);
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SA1Registers.PL |= SA1._Carry | ((SA1._Zero == 0) << 1) | (SA1._Negative & 0x80) | (SA1._Overflow << 6);
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}
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static inline void S9xSA1FixCycles (void)
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{
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if (SA1CheckEmulation())
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{
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SA1.S9xOpcodes = S9xSA1OpcodesM1X1;
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SA1.S9xOpLengths = S9xOpLengthsM1X1;
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}
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else
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if (SA1CheckMemory())
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{
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if (SA1CheckIndex())
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{
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SA1.S9xOpcodes = S9xSA1OpcodesM1X1;
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SA1.S9xOpLengths = S9xOpLengthsM1X1;
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}
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else
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{
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SA1.S9xOpcodes = S9xSA1OpcodesM1X0;
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SA1.S9xOpLengths = S9xOpLengthsM1X0;
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}
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}
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else
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|
|
|
|
{
|
|
|
|
|
if (SA1CheckIndex())
|
|
|
|
|
{
|
|
|
|
|
SA1.S9xOpcodes = S9xSA1OpcodesM0X1;
|
|
|
|
|
SA1.S9xOpLengths = S9xOpLengthsM0X1;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
SA1.S9xOpcodes = S9xSA1OpcodesM0X0;
|
|
|
|
|
SA1.S9xOpLengths = S9xOpLengthsM0X0;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#endif
|
