start moving everything to C

1 files changed, 181 insertions, 0 deletions

diff --git a/source/sdd1.c b/source/sdd1.c
new file mode 100644
index 0000000..7dc6f4a
--- /dev/null
+++ b/source/sdd1.c
@@ -0,0 +1,181 @@
+/*******************************************************************************
+  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);
+    }
+}
+