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author | Toad King | 2012-06-14 03:21:06 -0400 |
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committer | Toad King | 2012-06-14 03:21:06 -0400 |
commit | 6fb0c7a7a53e1eba7a0f5dc5b1ade312a0d76119 (patch) | |
tree | 885cf7f507139b795ba7b2a6fb829dc044da39dd /src/sdd1.cpp | |
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initial pocketsnes commit
Diffstat (limited to 'src/sdd1.cpp')
-rw-r--r-- | src/sdd1.cpp | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/src/sdd1.cpp b/src/sdd1.cpp new file mode 100644 index 0000000..8c79750 --- /dev/null +++ b/src/sdd1.cpp @@ -0,0 +1,135 @@ +/* + * 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]); +} +
+#ifndef _SNESPPC +static int S9xCompareSDD1LoggedDataEntries (const void *p1, const void *p2) +#else
+static int _cdecl S9xCompareSDD1LoggedDataEntries (const void *p1, const void *p2)
+#endif
+{ + 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); + } +} |