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snes9x.h
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/*****************************************************************************\
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.
\*****************************************************************************/
#ifndef _SNES9X_H_
#define _SNES9X_H_
#ifndef VERSION
#define VERSION "1.63"
#endif
#include "port.h"
#include "65c816.h"
#include "messages.h"
#ifdef ZLIB
#include <zlib.h>
#define FSTREAM gzFile
#define READ_FSTREAM(p, l, s) gzread(s, p, l)
#define WRITE_FSTREAM(p, l, s) gzwrite(s, p, l)
#define GETS_FSTREAM(p, l, s) gzgets(s, p, l)
#define GETC_FSTREAM(s) gzgetc(s)
#define OPEN_FSTREAM(f, m) gzopen(f, m)
#define REOPEN_FSTREAM(f, m) gzdopen(f, m)
#define FIND_FSTREAM(f) gztell(f)
#define REVERT_FSTREAM(s, o, p) gzseek(s, o, p)
#define CLOSE_FSTREAM(s) gzclose(s)
#else
#define FSTREAM FILE *
#define READ_FSTREAM(p, l, s) fread(p, 1, l, s)
#define WRITE_FSTREAM(p, l, s) fwrite(p, 1, l, s)
#define GETS_FSTREAM(p, l, s) fgets(p, l, s)
#define GETC_FSTREAM(s) fgetc(s)
#define OPEN_FSTREAM(f, m) fopen(f, m)
#define REOPEN_FSTREAM(f, m) fdopen(f, m)
#define FIND_FSTREAM(s) ftell(s)
#define REVERT_FSTREAM(s, o, p) fseek(s, o, p)
#define CLOSE_FSTREAM(s) fclose(s)
#endif
#include "stream.h"
#define STREAM Stream *
#define READ_STREAM(p, l, s) s->read(p,l)
#define WRITE_STREAM(p, l, s) s->write(p,l)
#define GETS_STREAM(p, l, s) s->gets(p,l)
#define GETC_STREAM(s) s->get_char()
#define OPEN_STREAM(f, m) openStreamFromFSTREAM(f, m)
#define REOPEN_STREAM(f, m) reopenStreamFromFd(f, m)
#define FIND_STREAM(s) s->pos()
#define REVERT_STREAM(s, o, p) s->revert(p, o)
#define CLOSE_STREAM(s) s->closeStream()
#define SNES_WIDTH 256
#define SNES_HEIGHT 224
#define SNES_HEIGHT_EXTENDED 239
#define MAX_SNES_WIDTH (SNES_WIDTH * 2)
#define MAX_SNES_HEIGHT (SNES_HEIGHT_EXTENDED * 2)
#define NTSC_MASTER_CLOCK 21477272.727272 // 21477272 + 8/11 exact
#define PAL_MASTER_CLOCK 21281370.0
#define NTSC_PROGRESSIVE_FRAME_RATE 60.09881389744051
#define NTSC_INTERLACED_FRAME_RATE 59.94005994
#define PAL_PROGRESSIVE_FRAME_RATE 50.006977968
#define SNES_MAX_NTSC_VCOUNTER 262
#define SNES_MAX_PAL_VCOUNTER 312
#define SNES_HCOUNTER_MAX 341
#ifndef ALLOW_CPU_OVERCLOCK
#define ONE_CYCLE 6
#define SLOW_ONE_CYCLE 8
#define TWO_CYCLES 12
#else
#define ONE_CYCLE (Settings.OneClockCycle)
#define SLOW_ONE_CYCLE (Settings.OneSlowClockCycle)
#define TWO_CYCLES (Settings.TwoClockCycles)
#endif
#define ONE_DOT_CYCLE 4
#define SNES_CYCLES_PER_SCANLINE (SNES_HCOUNTER_MAX * ONE_DOT_CYCLE)
#define SNES_SCANLINE_TIME (SNES_CYCLES_PER_SCANLINE / NTSC_MASTER_CLOCK)
#define SNES_WRAM_REFRESH_HC_v1 530
#define SNES_WRAM_REFRESH_HC_v2 538
#define SNES_WRAM_REFRESH_CYCLES 40
#define SNES_HBLANK_START_HC 1096 // H=274
#define SNES_HDMA_START_HC 1106 // FIXME: not true
#define SNES_HBLANK_END_HC 4 // H=1
#define SNES_HDMA_INIT_HC 20 // FIXME: not true
#define SNES_RENDER_START_HC (128 * ONE_DOT_CYCLE) // FIXME: Snes9x renders a line at a time.
#define SNES_TR_MASK (1 << 4)
#define SNES_TL_MASK (1 << 5)
#define SNES_X_MASK (1 << 6)
#define SNES_A_MASK (1 << 7)
#define SNES_RIGHT_MASK (1 << 8)
#define SNES_LEFT_MASK (1 << 9)
#define SNES_DOWN_MASK (1 << 10)
#define SNES_UP_MASK (1 << 11)
#define SNES_START_MASK (1 << 12)
#define SNES_SELECT_MASK (1 << 13)
#define SNES_Y_MASK (1 << 14)
#define SNES_B_MASK (1 << 15)
#define DEBUG_MODE_FLAG (1 << 0) // debugger
#define TRACE_FLAG (1 << 1) // debugger
#define SINGLE_STEP_FLAG (1 << 2) // debugger
#define BREAK_FLAG (1 << 3) // debugger
#define SCAN_KEYS_FLAG (1 << 4) // CPU
#define HALTED_FLAG (1 << 12) // APU
#define FRAME_ADVANCE_FLAG (1 << 9)
#define ROM_NAME_LEN 23
#define AUTO_FRAMERATE 200
struct SCPUState
{
uint32 Flags;
int32 Cycles;
int32 PrevCycles;
int32 V_Counter;
uint8 *PCBase;
bool8 NMIPending;
bool8 IRQLine;
bool8 IRQTransition;
bool8 IRQLastState;
bool8 IRQExternal;
int32 IRQPending;
int32 MemSpeed;
int32 MemSpeedx2;
int32 FastROMSpeed;
bool8 InDMA;
bool8 InHDMA;
bool8 InDMAorHDMA;
bool8 InWRAMDMAorHDMA;
uint8 HDMARanInDMA;
int32 CurrentDMAorHDMAChannel;
uint8 WhichEvent;
int32 NextEvent;
bool8 WaitingForInterrupt;
uint32 AutoSaveTimer;
bool8 SRAMModified;
};
enum
{
HC_HBLANK_START_EVENT = 1,
HC_HDMA_START_EVENT = 2,
HC_HCOUNTER_MAX_EVENT = 3,
HC_HDMA_INIT_EVENT = 4,
HC_RENDER_EVENT = 5,
HC_WRAM_REFRESH_EVENT = 6
};
enum
{
IRQ_NONE = 0x0,
IRQ_SET_FLAG = 0x1,
IRQ_CLEAR_FLAG = 0x2,
IRQ_TRIGGER_NMI = 0x4
};
struct STimings
{
int32 H_Max_Master;
int32 H_Max;
int32 V_Max_Master;
int32 V_Max;
int32 HBlankStart;
int32 HBlankEnd;
int32 HDMAInit;
int32 HDMAStart;
int32 NMITriggerPos;
int32 NextIRQTimer;
int32 IRQTriggerCycles;
int32 WRAMRefreshPos;
int32 RenderPos;
bool8 InterlaceField;
int32 DMACPUSync; // The cycles to synchronize DMA and CPU. Snes9x cannot emulate correctly.
int32 NMIDMADelay; // The delay of NMI trigger after DMA transfers. Snes9x cannot emulate correctly.
int32 IRQFlagChanging; // This value is just a hack.
int32 APUSpeedup;
bool8 APUAllowTimeOverflow;
};
struct SSettings
{
bool8 TraceDMA;
bool8 TraceHDMA;
bool8 TraceVRAM;
bool8 TraceUnknownRegisters;
bool8 TraceDSP;
bool8 TraceHCEvent;
bool8 TraceSMP;
bool8 SuperFX;
uint8 DSP;
bool8 SA1;
bool8 C4;
bool8 SDD1;
bool8 SPC7110;
bool8 SPC7110RTC;
bool8 OBC1;
uint8 SETA;
bool8 SRTC;
bool8 BS;
bool8 BSXItself;
bool8 BSXBootup;
bool8 MSU1;
bool8 MouseMaster;
bool8 SuperScopeMaster;
bool8 JustifierMaster;
bool8 MultiPlayer5Master;
bool8 MacsRifleMaster;
bool8 ForceLoROM;
bool8 ForceHiROM;
bool8 ForceHeader;
bool8 ForceNoHeader;
bool8 ForceInterleaved;
bool8 ForceInterleaved2;
bool8 ForceInterleaveGD24;
bool8 ForceNotInterleaved;
bool8 ForcePAL;
bool8 ForceNTSC;
bool8 PAL;
uint32 FrameTimePAL;
uint32 FrameTimeNTSC;
uint32 FrameTime;
bool8 SoundSync;
bool8 SixteenBitSound;
uint32 SoundPlaybackRate;
uint32 SoundInputRate;
bool8 Stereo;
bool8 ReverseStereo;
bool8 Mute;
bool8 DynamicRateControl;
int32 DynamicRateLimit; /* Multiplied by 1000 */
int32 InterpolationMethod;
bool8 Transparency;
uint8 BG_Forced;
bool8 DisableGraphicWindows;
uint16 ForcedBackdrop;
bool8 DisplayTime;
bool8 DisplayFrameRate;
bool8 DisplayWatchedAddresses;
bool8 DisplayPressedKeys;
bool8 DisplayMovieFrame;
bool DisplayIndicators;
bool8 AutoDisplayMessages;
uint32 InitialInfoStringTimeout;
uint16 DisplayColor;
bool8 BilinearFilter;
bool ShowOverscan;
bool8 Multi;
char CartAName[PATH_MAX + 1];
char CartBName[PATH_MAX + 1];
bool8 DisableGameSpecificHacks;
bool8 BlockInvalidVRAMAccessMaster;
bool8 BlockInvalidVRAMAccess;
int32 HDMATimingHack;
bool8 ForcedPause;
bool8 Paused;
bool8 StopEmulation;
uint32 SkipFrames;
uint32 TurboSkipFrames;
uint32 AutoMaxSkipFrames;
bool8 TurboMode;
uint32 HighSpeedSeek;
bool8 FrameAdvance;
bool8 Rewinding;
bool8 NetPlay;
bool8 NetPlayServer;
char ServerName[128];
int Port;
bool8 MovieTruncate;
bool8 MovieNotifyIgnored;
bool8 WrongMovieStateProtection;
bool8 DumpStreams;
int DumpStreamsMaxFrames;
bool8 TakeScreenshot;
int8 StretchScreenshots;
bool8 SnapshotScreenshots;
char InitialSnapshotFilename[PATH_MAX + 1];
bool8 FastSavestates;
bool8 ApplyCheats;
bool8 NoPatch;
bool8 IgnorePatchChecksum;
bool8 IsPatched;
int32 AutoSaveDelay;
bool8 DontSaveOopsSnapshot;
bool8 UpAndDown;
bool8 SeparateEchoBuffer;
uint32 SuperFXClockMultiplier;
int OverclockMode;
int OneClockCycle;
int OneSlowClockCycle;
int TwoClockCycles;
int MaxSpriteTilesPerLine;
};
struct SSNESGameFixes
{
uint8 SRAMInitialValue;
uint8 Uniracers;
};
enum
{
PAUSE_NETPLAY_CONNECT = (1 << 0),
PAUSE_TOGGLE_FULL_SCREEN = (1 << 1),
PAUSE_EXIT = (1 << 2),
PAUSE_MENU = (1 << 3),
PAUSE_INACTIVE_WINDOW = (1 << 4),
PAUSE_WINDOW_ICONISED = (1 << 5),
PAUSE_RESTORE_GUI = (1 << 6),
PAUSE_FREEZE_FILE = (1 << 7)
};
void S9xSetPause(uint32);
void S9xClearPause(uint32);
void S9xExit(void);
void S9xMessage(int, int, const char *);
extern struct SSettings Settings;
extern struct SCPUState CPU;
extern struct STimings Timings;
extern struct SSNESGameFixes SNESGameFixes;
extern char String[513];
#endif