1 files changed, 131 insertions, 0 deletions
diff --git a/src/sdd1.c b/src/sdd1.c
new file mode 100644
index 0000000..878bf4c
--- /dev/null
+++ b/src/sdd1.c
@@ -0,0 +1,131 @@
+/*
+ * Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
+ *
+ * (c) Copyright 1996 - 2001 Gary Henderson (gary.henderson@ntlworld.com) and
+ *                           Jerremy Koot (jkoot@snes9x.com)
+ *
+ * Super FX C emulator code 
+ * (c) Copyright 1997 - 1999 Ivar (ivar@snes9x.com) and
+ *                           Gary Henderson.
+ * Super FX assembler emulator code (c) Copyright 1998 zsKnight and _Demo_.
+ *
+ * DSP1 emulator code (c) Copyright 1998 Ivar, _Demo_ and Gary Henderson.
+ * C4 asm and some C emulation code (c) Copyright 2000 zsKnight and _Demo_.
+ * C4 C code (c) Copyright 2001 Gary Henderson (gary.henderson@ntlworld.com).
+ *
+ * DOS port code 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);
+    }
+}