/*****************************************************************************\
     Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
                This file is licensed under the Snes9x License.
   For further information, consult the LICENSE file in the root directory.
\*****************************************************************************/

#include "snes9x.h"
#include "memmap.h"
#include "dma.h"
#include "apu/apu.h"
#include "fxinst.h"
#include "fxemu.h"
#include "srtc.h"
#include "cheats.h"
#ifdef NETPLAY_SUPPORT
#include "netplay.h"
#endif
#ifdef DEBUGGER
#include "debug.h"
#include "missing.h"
#endif

struct SCPUState		CPU;
struct SICPU			ICPU;
struct SRegisters		Registers;
struct SPPU				PPU;
struct InternalPPU		IPPU;
struct SDMA				DMA[8];
struct STimings			Timings;
struct SGFX				GFX;
struct SBG				BG;
struct SLineData		LineData[240];
struct SLineMatrixData	LineMatrixData[240];
struct SDSP0			DSP0;
struct SDSP1			DSP1;
struct SDSP2			DSP2;
struct SDSP3			DSP3;
struct SDSP4			DSP4;
struct SSA1				SA1;
struct SSA1Registers	SA1Registers;
struct FxRegs_s			GSU;
struct FxInfo_s			SuperFX;
struct SST010			ST010;
struct SST011			ST011;
struct SST018			ST018;
struct SOBC1			OBC1;
struct SSPC7110Snapshot	s7snap;
struct SSRTCSnapshot	srtcsnap;
struct SRTCData			RTCData;
struct SBSX				BSX;
struct SMSU1			MSU1;
struct SMulti			Multi;
struct SSettings		Settings;
struct SSNESGameFixes	SNESGameFixes;
#ifdef NETPLAY_SUPPORT
struct SNetPlay			NetPlay;
#endif
#ifdef DEBUGGER
struct Missing			missing;
#endif
struct SCheatData		Cheat;
struct Watch			watches[16];
CMemory					Memory;

char	String[513];
uint8	OpenBus = 0;
uint8	*HDMAMemPointers[8];
uint16	BlackColourMap[256];
uint16	DirectColourMaps[8][256];

SnesModel	M1SNES = { 1, 3, 2 };
SnesModel	M2SNES = { 2, 4, 3 };
SnesModel	*Model = &M1SNES;

#ifdef GFX_MULTI_FORMAT
uint32	RED_LOW_BIT_MASK           = RED_LOW_BIT_MASK_RGB565;
uint32	GREEN_LOW_BIT_MASK         = GREEN_LOW_BIT_MASK_RGB565;
uint32	BLUE_LOW_BIT_MASK          = BLUE_LOW_BIT_MASK_RGB565;
uint32	RED_HI_BIT_MASK            = RED_HI_BIT_MASK_RGB565;
uint32	GREEN_HI_BIT_MASK          = GREEN_HI_BIT_MASK_RGB565;
uint32	BLUE_HI_BIT_MASK           = BLUE_HI_BIT_MASK_RGB565;
uint32	MAX_RED                    = MAX_RED_RGB565;
uint32	MAX_GREEN                  = MAX_GREEN_RGB565;
uint32	MAX_BLUE                   = MAX_BLUE_RGB565;
uint32	SPARE_RGB_BIT_MASK         = SPARE_RGB_BIT_MASK_RGB565;
uint32	GREEN_HI_BIT               = (MAX_GREEN_RGB565 + 1) >> 1;
uint32	RGB_LOW_BITS_MASK          = (RED_LOW_BIT_MASK_RGB565 | GREEN_LOW_BIT_MASK_RGB565 | BLUE_LOW_BIT_MASK_RGB565);
uint32	RGB_HI_BITS_MASK           = (RED_HI_BIT_MASK_RGB565  | GREEN_HI_BIT_MASK_RGB565  | BLUE_HI_BIT_MASK_RGB565);
uint32	RGB_HI_BITS_MASKx2         = (RED_HI_BIT_MASK_RGB565  | GREEN_HI_BIT_MASK_RGB565  | BLUE_HI_BIT_MASK_RGB565) << 1;
uint32	RGB_REMOVE_LOW_BITS_MASK   = ~RGB_LOW_BITS_MASK;
uint32	FIRST_COLOR_MASK           = FIRST_COLOR_MASK_RGB565;
uint32	SECOND_COLOR_MASK          = SECOND_COLOR_MASK_RGB565;
uint32	THIRD_COLOR_MASK           = THIRD_COLOR_MASK_RGB565;
uint32	ALPHA_BITS_MASK            = ALPHA_BITS_MASK_RGB565;
uint32	FIRST_THIRD_COLOR_MASK     = 0;
uint32	TWO_LOW_BITS_MASK          = 0;
uint32	HIGH_BITS_SHIFTED_TWO_MASK = 0;
#endif

uint16 SignExtend[2] =
{
	0x0000,
	0xff00
};

int HDMA_ModeByteCounts[8] =
{
	1, 2, 2, 4, 4, 4, 2, 4
};

uint8 mul_brightness[16][32] =
{
	{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
	{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
	  0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02 },
	{ 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x02,
	  0x02, 0x02, 0x02, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x04, 0x04, 0x04, 0x04, 0x04 },
	{ 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x02, 0x02, 0x03, 0x03, 0x03,
	  0x03, 0x03, 0x04, 0x04, 0x04, 0x04, 0x04, 0x05, 0x05, 0x05, 0x05, 0x05, 0x06, 0x06, 0x06, 0x06 },
	{ 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x02, 0x03, 0x03, 0x03, 0x03, 0x04, 0x04,
	  0x04, 0x05, 0x05, 0x05, 0x05, 0x06, 0x06, 0x06, 0x06, 0x07, 0x07, 0x07, 0x07, 0x08, 0x08, 0x08 },
	{ 0x00, 0x00, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x03, 0x03, 0x03, 0x04, 0x04, 0x04, 0x05, 0x05,
	  0x05, 0x06, 0x06, 0x06, 0x07, 0x07, 0x07, 0x08, 0x08, 0x08, 0x09, 0x09, 0x09, 0x0a, 0x0a, 0x0a },
	{ 0x00, 0x00, 0x01, 0x01, 0x02, 0x02, 0x02, 0x03, 0x03, 0x04, 0x04, 0x04, 0x05, 0x05, 0x06, 0x06,
	  0x06, 0x07, 0x07, 0x08, 0x08, 0x08, 0x09, 0x09, 0x0a, 0x0a, 0x0a, 0x0b, 0x0b, 0x0c, 0x0c, 0x0c },
	{ 0x00, 0x00, 0x01, 0x01, 0x02, 0x02, 0x03, 0x03, 0x04, 0x04, 0x05, 0x05, 0x06, 0x06, 0x07, 0x07,
	  0x07, 0x08, 0x08, 0x09, 0x09, 0x0a, 0x0a, 0x0b, 0x0b, 0x0c, 0x0c, 0x0d, 0x0d, 0x0e, 0x0e, 0x0e },
	{ 0x00, 0x01, 0x01, 0x02, 0x02, 0x03, 0x03, 0x04, 0x04, 0x05, 0x05, 0x06, 0x06, 0x07, 0x07, 0x08,
	  0x09, 0x09, 0x0a, 0x0a, 0x0b, 0x0b, 0x0c, 0x0c, 0x0d, 0x0d, 0x0e, 0x0e, 0x0f, 0x0f, 0x10, 0x11 },
	{ 0x00, 0x01, 0x01, 0x02, 0x02, 0x03, 0x04, 0x04, 0x05, 0x05, 0x06, 0x07, 0x07, 0x08, 0x08, 0x09,
	  0x0a, 0x0a, 0x0b, 0x0b, 0x0c, 0x0d, 0x0d, 0x0e, 0x0e, 0x0f, 0x10, 0x10, 0x11, 0x11, 0x12, 0x13 },
	{ 0x00, 0x01, 0x01, 0x02, 0x03, 0x03, 0x04, 0x05, 0x05, 0x06, 0x07, 0x07, 0x08, 0x09, 0x09, 0x0a,
	  0x0b, 0x0b, 0x0c, 0x0d, 0x0d, 0x0e, 0x0f, 0x0f, 0x10, 0x11, 0x11, 0x12, 0x13, 0x13, 0x14, 0x15 },
	{ 0x00, 0x01, 0x01, 0x02, 0x03, 0x04, 0x04, 0x05, 0x06, 0x07, 0x07, 0x08, 0x09, 0x0a, 0x0a, 0x0b,
	  0x0c, 0x0c, 0x0d, 0x0e, 0x0f, 0x0f, 0x10, 0x11, 0x12, 0x12, 0x13, 0x14, 0x15, 0x15, 0x16, 0x17 },
	{ 0x00, 0x01, 0x02, 0x02, 0x03, 0x04, 0x05, 0x06, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0a, 0x0b, 0x0c,
	  0x0d, 0x0e, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x12, 0x13, 0x14, 0x15, 0x16, 0x16, 0x17, 0x18, 0x19 },
	{ 0x00, 0x01, 0x02, 0x03, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0a, 0x0b, 0x0c, 0x0d,
	  0x0e, 0x0f, 0x10, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x17, 0x18, 0x19, 0x1a, 0x1b },
	{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e,
	  0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d },
	{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
	  0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f }
};

uint8 brightness_cap[64];

uint8 S9xOpLengthsM0X0[256] =
{
//  0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 0
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 1
	3, 2, 4, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 2
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 3
	1, 2, 2, 2, 3, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 4
	2, 2, 2, 2, 3, 2, 2, 2, 1, 3, 1, 1, 4, 3, 3, 4, // 5
	1, 2, 3, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 6
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 7
	2, 2, 3, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 8
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 9
	3, 2, 3, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // A
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // B
	3, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // C
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // D
	3, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // E
	2, 2, 2, 2, 3, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4  // F
};

uint8 S9xOpLengthsM0X1[256] =
{
//  0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 0
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 1
	3, 2, 4, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 2
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 3
	1, 2, 2, 2, 3, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 4
	2, 2, 2, 2, 3, 2, 2, 2, 1, 3, 1, 1, 4, 3, 3, 4, // 5
	1, 2, 3, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 6
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 7
	2, 2, 3, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 8
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 9
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // A
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // B
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // C
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // D
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // E
	2, 2, 2, 2, 3, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4  // F
};

uint8 S9xOpLengthsM1X0[256] =
{
//  0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F
	2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 1, 1, 3, 3, 3, 4, // 0
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 1
	3, 2, 4, 2, 2, 2, 2, 2, 1, 2, 1, 1, 3, 3, 3, 4, // 2
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 3
	1, 2, 2, 2, 3, 2, 2, 2, 1, 2, 1, 1, 3, 3, 3, 4, // 4
	2, 2, 2, 2, 3, 2, 2, 2, 1, 3, 1, 1, 4, 3, 3, 4, // 5
	1, 2, 3, 2, 2, 2, 2, 2, 1, 2, 1, 1, 3, 3, 3, 4, // 6
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 7
	2, 2, 3, 2, 2, 2, 2, 2, 1, 2, 1, 1, 3, 3, 3, 4, // 8
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 9
	3, 2, 3, 2, 2, 2, 2, 2, 1, 2, 1, 1, 3, 3, 3, 4, // A
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // B
	3, 2, 2, 2, 2, 2, 2, 2, 1, 2, 1, 1, 3, 3, 3, 4, // C
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // D
	3, 2, 2, 2, 2, 2, 2, 2, 1, 2, 1, 1, 3, 3, 3, 4, // E
	2, 2, 2, 2, 3, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4  // F
};

uint8 S9xOpLengthsM1X1[256] =
{
//  0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F
	2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 1, 1, 3, 3, 3, 4, // 0
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 1
	3, 2, 4, 2, 2, 2, 2, 2, 1, 2, 1, 1, 3, 3, 3, 4, // 2
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 3
	1, 2, 2, 2, 3, 2, 2, 2, 1, 2, 1, 1, 3, 3, 3, 4, // 4
	2, 2, 2, 2, 3, 2, 2, 2, 1, 3, 1, 1, 4, 3, 3, 4, // 5
	1, 2, 3, 2, 2, 2, 2, 2, 1, 2, 1, 1, 3, 3, 3, 4, // 6
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 7
	2, 2, 3, 2, 2, 2, 2, 2, 1, 2, 1, 1, 3, 3, 3, 4, // 8
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // 9
	2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 1, 1, 3, 3, 3, 4, // A
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // B
	2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 1, 1, 3, 3, 3, 4, // C
	2, 2, 2, 2, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4, // D
	2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 1, 1, 3, 3, 3, 4, // E
	2, 2, 2, 2, 3, 2, 2, 2, 1, 3, 1, 1, 3, 3, 3, 4  // F
};