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/*
* 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);
}
}
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