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snes9x.h
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/*
* Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
*
* (c) Copyright 1996 - 2001 Gary Henderson ([email protected]) and
* Jerremy Koot ([email protected])
*
* Super FX C emulator code
* (c) Copyright 1997 - 1999 Ivar ([email protected]) 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 ([email protected]).
*
* 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.
*/
#ifndef _SNES9X_H_
#define _SNES9X_H_
#define VERSION "1.39"
#include <stdio.h>
#include <stdlib.h>
#include "port.h"
#include "65c816.h"
#include "messages.h"
#if defined(USE_GLIDE) && !defined(GFX_MULTI_FORMAT)
#define GFX_MULTI_FORMAT
#endif
#define ROM_NAME_LEN 23
#ifdef ZLIB
#include "zlib.h"
#define STREAM gzFile
#define READ_STREAM(p,l,s) gzread (s,p,l)
#define WRITE_STREAM(p,l,s) gzwrite (s,p,l)
#define OPEN_STREAM(f,m) gzopen (f,m)
#define CLOSE_STREAM(s) gzclose (s)
#else
#define STREAM FILE *
#define READ_STREAM(p,l,s) fread (p,1,l,s)
#define WRITE_STREAM(p,l,s) fwrite (p,1,l,s)
#define OPEN_STREAM(f,m) fopen (f,m)
#define CLOSE_STREAM(s) fclose (s)
#endif
/* SNES screen width and height */
#define SNES_WIDTH 256
#define SNES_HEIGHT 224
#define SNES_HEIGHT_EXTENDED 239
#define IMAGE_WIDTH (Settings.SupportHiRes ? SNES_WIDTH * 2 : SNES_WIDTH)
#define IMAGE_HEIGHT (Settings.SupportHiRes ? SNES_HEIGHT_EXTENDED * 2 : SNES_HEIGHT_EXTENDED)
#define SNES_MAX_NTSC_VCOUNTER 262
#define SNES_MAX_PAL_VCOUNTER 312
#define SNES_HCOUNTER_MAX 342
#define SPC700_TO_65C816_RATIO 2
#define AUTO_FRAMERATE 200
// NTSC master clock signal 21.47727MHz
// PPU: master clock / 4
// 1 / PPU clock * 342 -> 63.695us
// 63.695us / (1 / 3.579545MHz) -> 228 cycles per scanline
// From Earth Worm Jim: APU executes an average of 65.14285714 cycles per
// scanline giving an APU clock speed of 1.022731096MHz
// PAL master clock signal 21.28137MHz
// PPU: master clock / 4
// 1 / PPU clock * 342 -> 64.281us
// 64.281us / (1 / 3.546895MHz) -> 228 cycles per scanline.
#define SNES_SCANLINE_TIME (63.695e-6)
#define SNES_CLOCK_SPEED (3579545)
#define SNES_CLOCK_LEN (1.0 / SNES_CLOCK_SPEED)
#ifdef VAR_CYCLES
#define SNES_CYCLES_PER_SCANLINE ((uint32) ((SNES_SCANLINE_TIME / SNES_CLOCK_LEN) * 6 + 0.5))
#else
#define SNES_CYCLES_PER_SCANLINE ((uint32) (SNES_SCANLINE_TIME / SNES_CLOCK_LEN + 0.5))
#endif
#define SNES_APUTIMER2_CYCLEx10000 ((uint32) ((SNES_CYCLES_PER_SCANLINE * 10000L) * (1.0 / 64000.0) / SNES_SCANLINE_TIME + 0.5))
#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)
enum {
SNES_MULTIPLAYER5,
SNES_JOYPAD,
SNES_MOUSE_SWAPPED,
SNES_MOUSE,
SNES_SUPERSCOPE,
SNES_MAX_CONTROLLER_OPTIONS
};
#define DEBUG_MODE_FLAG (1 << 0)
#define TRACE_FLAG (1 << 1)
#define SINGLE_STEP_FLAG (1 << 2)
#define BREAK_FLAG (1 << 3)
#define SCAN_KEYS_FLAG (1 << 4)
#define SAVE_SNAPSHOT_FLAG (1 << 5)
#define DELAYED_NMI_FLAG (1 << 6)
#define NMI_FLAG (1 << 7)
#define PROCESS_SOUND_FLAG (1 << 8)
#define FRAME_ADVANCE_FLAG (1 << 9)
#define DELAYED_NMI_FLAG2 (1 << 10)
#define IRQ_PENDING_FLAG (1 << 11)
#ifdef VAR_CYCLES
#define ONE_CYCLE 6
#define SLOW_ONE_CYCLE 8
#define TWO_CYCLES 12
#else
#define ONE_CYCLE 1
#define SLOW_ONE_CYCLE 1
#define TWO_CYCLES 2
#endif
//Needed for SA1
#define MEMMAP_BLOCK_SIZE (0x1000)
#define MEMMAP_NUM_BLOCKS (0x1000000 / MEMMAP_BLOCK_SIZE)
struct SCPUState{
uint32 Flags;
bool8_32 BranchSkip;
bool8_32 NMIActive;
bool8_32 IRQActive;
bool8_32 WaitingForInterrupt;
bool8_32 InDMA;
uint8_32 WhichEvent;
uint8 *PC;
uint8 *PCBase;
uint8 *PCAtOpcodeStart;
uint8 *WaitAddress;
uint32 WaitCounter;
long Cycles;
long NextEvent;
long V_Counter;
long MemSpeed;
long MemSpeedx2;
long FastROMSpeed;
uint32 AutoSaveTimer;
bool8_32 SRAMModified;
uint32 NMITriggerPoint;
bool8_32 BRKTriggered;
bool8_32 TriedInterleavedMode2;
uint32 NMICycleCount;
uint32 IRQCycleCount;
//Needed for SA1
bool8_32 Executing;
bool8_32 Waiting;
uint8 *BWRAM;
uint8 *WaitByteAddress1;
uint8 *WaitByteAddress2;
uint8 *Map [MEMMAP_NUM_BLOCKS];
uint8 *WriteMap [MEMMAP_NUM_BLOCKS];
int16 op1;
int16 op2;
int arithmetic_op;
int64 sum;
bool8_32 overflow;
uint8 VirtualBitmapFormat;
bool8_32 in_char_dma;
uint8 variable_bit_pos;
};
#define HBLANK_START_EVENT 0
#define HBLANK_END_EVENT 1
#define HTIMER_BEFORE_EVENT 2
#define HTIMER_AFTER_EVENT 3
#define NO_EVENT 4
struct SSettings{
// CPU options
bool8_32 APUEnabled;
bool8_32 Shutdown;
uint8 SoundSkipMethod;
long H_Max;
long HBlankStart;
long CyclesPercentage;
bool8_32 DisableIRQ;
bool8_32 Paused;
bool8_32 ForcedPause;
bool8_32 StopEmulation;
// Tracing options
bool8_32 TraceDMA;
bool8_32 TraceHDMA;
bool8_32 TraceVRAM;
bool8_32 TraceUnknownRegisters;
bool8_32 TraceDSP;
// Joystick options
bool8_32 SwapJoypads;
bool8_32 JoystickEnabled;
// ROM timing options (see also H_Max above)
bool8_32 ForcePAL;
bool8_32 ForceNTSC;
bool8_32 PAL;
uint32 FrameTimePAL;
uint32 FrameTimeNTSC;
uint32 FrameTime;
uint32 SkipFrames;
// ROM image options
bool8_32 ForceLoROM;
bool8_32 ForceHiROM;
bool8_32 ForceHeader;
bool8_32 ForceNoHeader;
bool8_32 ForceInterleaved;
bool8_32 ForceInterleaved2;
bool8_32 ForceNotInterleaved;
// Peripherial options
bool8_32 ForceSuperFX;
bool8_32 ForceNoSuperFX;
bool8_32 ForceDSP1;
bool8_32 ForceNoDSP1;
bool8_32 ForceSA1;
bool8_32 ForceNoSA1;
bool8_32 ForceC4;
bool8_32 ForceNoC4;
bool8_32 ForceSDD1;
bool8_32 ForceNoSDD1;
bool8_32 MultiPlayer5;
bool8_32 Mouse;
bool8_32 SuperScope;
bool8_32 SRTC;
uint32 ControllerOption;
bool8_32 ShutdownMaster;
bool8_32 MultiPlayer5Master;
bool8_32 SuperScopeMaster;
bool8_32 MouseMaster;
bool8_32 SuperFX;
bool8_32 DSP1Master;
bool8_32 SA1;
bool8_32 C4;
bool8_32 SDD1;
// bool8_32 SPC7110;
// bool8_32 SPC7110RTC;
bool8_32 OBC1;
// Sound options
uint32 SoundPlaybackRate;
bool8_32 TraceSoundDSP;
bool8_32 Stereo;
bool8_32 ReverseStereo;
bool8_32 SixteenBitSound;
int SoundBufferSize;
int SoundMixInterval;
bool8_32 SoundEnvelopeHeightReading;
bool8_32 DisableSoundEcho;
bool8_32 DisableSampleCaching;
bool8_32 DisableMasterVolume;
bool8_32 SoundSync;
bool8_32 InterpolatedSound;
bool8_32 ThreadSound;
bool8_32 Mute;
bool8_32 NextAPUEnabled;
uint8 AltSampleDecode;
bool8_32 FixFrequency;
// Graphics options
bool8_32 SixteenBit;
bool8_32 Transparency;
bool8_32 SupportHiRes;
bool8_32 Mode7Interpolate;
// SNES graphics options
bool8_32 BGLayering;
bool8_32 DisableGraphicWindows;
bool8_32 ForceTransparency;
bool8_32 ForceNoTransparency;
bool8_32 DisableHDMA;
bool8_32 DisplayFrameRate;
// Others
bool8_32 NetPlay;
bool8_32 NetPlayServer;
char ServerName [128];
int Port;
bool8_32 GlideEnable;
bool8_32 OpenGLEnable;
int32 AutoSaveDelay; // Time in seconds before S-RAM auto-saved if modified.
bool8_32 ApplyCheats;
bool8_32 TurboMode;
uint32 TurboSkipFrames;
uint32 AutoMaxSkipFrames;
// Fixes for individual games
uint32 StrikeGunnerOffsetHack;
bool8_32 ChuckRock;
bool8_32 StarfoxHack;
bool8_32 WinterGold;
bool8_32 Dezaemon;
bool8_32 WrestlemaniaArcade;
bool8_32 BS; // Japanese Satellite System games.
bool8_32 DaffyDuck;
uint8 APURAMInitialValue;
#ifdef __WIN32__
int SoundDriver;
#endif
};
struct SSNESGameFixes
{
uint8 NeedInit0x2137;
uint8 umiharakawaseFix;
uint8 alienVSpredetorFix;
uint8 APU_OutPorts_ReturnValueFix;
uint8 Old_Read0x4200;
uint8 _0x213E_ReturnValue;
uint8 TouhaidenControllerFix;
uint8 SoundEnvelopeHeightReading2;
uint8 SRAMInitialValue;
uint8 Uniracers;
};
START_EXTERN_C
extern struct SSettings Settings;
extern struct SCPUState CPU;
extern struct SSNESGameFixes SNESGameFixes;
extern char String [513];
void S9xExit ();
void S9xMessage (int type, int number, const char *message);
void S9xLoadSDD1Data ();
END_EXTERN_C
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 mask);
void S9xClearPause (uint32 mask);
#endif