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authoraliaspider2014-10-29 05:36:07 +0100
committeraliaspider2014-10-29 05:36:07 +0100
commita6dc7abc9b8cc3986eda5a84141da7dc9e4e8f1a (patch)
tree6f82417b0ab41f3887dd025ee3b85254e28143da /source/sdd1.cpp
parent1d98e1c317fa19687ae6bc3cb8e550ef7531bf02 (diff)
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start moving everything to C
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diff --git a/source/sdd1.cpp b/source/sdd1.cpp
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-/*******************************************************************************
- Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
-
- (c) Copyright 1996 - 2002 Gary Henderson (gary.henderson@ntlworld.com) and
- Jerremy Koot (jkoot@snes9x.com)
-
- (c) Copyright 2001 - 2004 John Weidman (jweidman@slip.net)
-
- (c) Copyright 2002 - 2004 Brad Jorsch (anomie@users.sourceforge.net),
- funkyass (funkyass@spam.shaw.ca),
- Joel Yliluoma (http://iki.fi/bisqwit/)
- Kris Bleakley (codeviolation@hotmail.com),
- Matthew Kendora,
- Nach (n-a-c-h@users.sourceforge.net),
- Peter Bortas (peter@bortas.org) and
- zones (kasumitokoduck@yahoo.com)
-
- C4 x86 assembler and some C emulation code
- (c) Copyright 2000 - 2003 zsKnight (zsknight@zsnes.com),
- _Demo_ (_demo_@zsnes.com), and Nach
-
- C4 C++ code
- (c) Copyright 2003 Brad Jorsch
-
- DSP-1 emulator code
- (c) Copyright 1998 - 2004 Ivar (ivar@snes9x.com), _Demo_, Gary Henderson,
- John Weidman, neviksti (neviksti@hotmail.com),
- Kris Bleakley, Andreas Naive
-
- DSP-2 emulator code
- (c) Copyright 2003 Kris Bleakley, John Weidman, neviksti, Matthew Kendora, and
- Lord Nightmare (lord_nightmare@users.sourceforge.net
-
- OBC1 emulator code
- (c) Copyright 2001 - 2004 zsKnight, pagefault (pagefault@zsnes.com) and
- Kris Bleakley
- Ported from x86 assembler to C by sanmaiwashi
-
- SPC7110 and RTC C++ emulator code
- (c) Copyright 2002 Matthew Kendora with research by
- zsKnight, John Weidman, and Dark Force
-
- S-DD1 C emulator code
- (c) Copyright 2003 Brad Jorsch with research by
- Andreas Naive and John Weidman
-
- S-RTC C emulator code
- (c) Copyright 2001 John Weidman
-
- ST010 C++ emulator code
- (c) Copyright 2003 Feather, Kris Bleakley, John Weidman and Matthew Kendora
-
- Super FX x86 assembler emulator code
- (c) Copyright 1998 - 2003 zsKnight, _Demo_, and pagefault
-
- Super FX C emulator code
- (c) Copyright 1997 - 1999 Ivar, Gary Henderson and John Weidman
-
-
- SH assembler code partly based on x86 assembler code
- (c) Copyright 2002 - 2004 Marcus Comstedt (marcus@mc.pp.se)
-
-
- Specific ports contains the works of other authors. See headers in
- individual files.
-
- Snes9x homepage: http://www.snes9x.com
-
- Permission to use, copy, modify and distribute Snes9x in both binary and
- source form, for non-commercial purposes, is hereby granted without fee,
- providing that this license information and copyright notice appear with
- all copies and any derived work.
-
- This software is provided 'as-is', without any express or implied
- warranty. In no event shall the authors be held liable for any damages
- arising from the use of this software.
-
- Snes9x is freeware for PERSONAL USE only. Commercial users should
- seek permission of the copyright holders first. Commercial use includes
- charging money for Snes9x or software derived from Snes9x.
-
- The copyright holders request that bug fixes and improvements to the code
- should be forwarded to them so everyone can benefit from the modifications
- in future versions.
-
- Super NES and Super Nintendo Entertainment System are trademarks of
- Nintendo Co., Limited and its subsidiary companies.
-*******************************************************************************/
-
-#include "snes9x.h"
-#include "memmap.h"
-#include "ppu.h"
-#include "sdd1.h"
-#include "display.h"
-
-#ifdef __linux
-#include <unistd.h>
-#endif
-
-void S9xSetSDD1MemoryMap (uint32 bank, uint32 value)
-{
- bank = 0xc00 + bank * 0x100;
- value = value * 1024 * 1024;
-
- int c;
-
- for (c = 0; c < 0x100; c += 16)
- {
- uint8 *block = &Memory.ROM [value + (c << 12)];
- int i;
-
- for (i = c; i < c + 16; i++)
- Memory.Map [i + bank] = block;
- }
-}
-
-void S9xResetSDD1 ()
-{
- memset (&Memory.FillRAM [0x4800], 0, 4);
- for (int i = 0; i < 4; i++)
- {
- Memory.FillRAM [0x4804 + i] = i;
- S9xSetSDD1MemoryMap (i, i);
- }
-}
-
-void S9xSDD1PostLoadState ()
-{
- for (int i = 0; i < 4; i++)
- S9xSetSDD1MemoryMap (i, Memory.FillRAM [0x4804 + i]);
-}
-
-static int S9xCompareSDD1LoggedDataEntries (const void *p1, const void *p2)
-{
- uint8 *b1 = (uint8 *) p1;
- uint8 *b2 = (uint8 *) p2;
- uint32 a1 = (*b1 << 16) + (*(b1 + 1) << 8) + *(b1 + 2);
- uint32 a2 = (*b2 << 16) + (*(b2 + 1) << 8) + *(b2 + 2);
-
- return (a1 - a2);
-}
-
-void S9xSDD1SaveLoggedData ()
-{
- if (Memory.SDD1LoggedDataCount != Memory.SDD1LoggedDataCountPrev)
- {
- qsort (Memory.SDD1LoggedData, Memory.SDD1LoggedDataCount, 8,
- S9xCompareSDD1LoggedDataEntries);
-
- FILE *fs = fopen (S9xGetFilename (".dat"), "wb");
-
- if (fs)
- {
- fwrite (Memory.SDD1LoggedData, 8,
- Memory.SDD1LoggedDataCount, fs);
- fclose (fs);
-#if defined(__linux)
- chown (S9xGetFilename (".dat"), getuid (), getgid ());
-#endif
- }
- Memory.SDD1LoggedDataCountPrev = Memory.SDD1LoggedDataCount;
- }
-}
-
-void S9xSDD1LoadLoggedData ()
-{
- FILE *fs = fopen (S9xGetFilename (".dat"), "rb");
-
- Memory.SDD1LoggedDataCount = Memory.SDD1LoggedDataCountPrev = 0;
-
- if (fs)
- {
- int c = fread (Memory.SDD1LoggedData, 8,
- MEMMAP_MAX_SDD1_LOGGED_ENTRIES, fs);
-
- if (c != EOF)
- Memory.SDD1LoggedDataCount = Memory.SDD1LoggedDataCountPrev = c;
- fclose (fs);
- }
-}
-