Port the libretro core and make it standalone.

TODO :
- Input should use our config file instead.
- Missing audio in some games. (Star Ocean, doesn't happen with stock retroarch code. Odd...)

25 files changed, 2564 insertions, 0 deletions

diff --git a/shell/audio/alsa/sound_output.c b/shell/audio/alsa/sound_output.c
new file mode 100644
index 0000000..5173bb6
--- /dev/null
+++ b/shell/audio/alsa/sound_output.c
@@ -0,0 +1,142 @@
+#include <sys/ioctl.h>
+#include <stdint.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <alsa/asoundlib.h>
+
+#include "sound_output.h"
+
+static snd_pcm_t *handle;
+
+uint32_t Audio_Init()
+{
+	snd_pcm_hw_params_t *params;
+	uint32_t val;
+	int32_t dir = -1;
+	snd_pcm_uframes_t frames;
+	
+	/* Open PCM device for playback. */
+	int32_t rc = snd_pcm_open(&handle, "default", SND_PCM_STREAM_PLAYBACK, 0);
+
+	if (rc < 0)
+		rc = snd_pcm_open(&handle, "plughw:0,0,0", SND_PCM_STREAM_PLAYBACK, 0);
+
+	if (rc < 0)
+		rc = snd_pcm_open(&handle, "plughw:0,0", SND_PCM_STREAM_PLAYBACK, 0);
+		
+	if (rc < 0)
+		rc = snd_pcm_open(&handle, "plughw:1,0,0", SND_PCM_STREAM_PLAYBACK, 0);
+
+	if (rc < 0)
+		rc = snd_pcm_open(&handle, "plughw:1,0", SND_PCM_STREAM_PLAYBACK, 0);
+
+	if (rc < 0)
+	{
+		fprintf(stderr, "unable to open PCM device: %s\n", snd_strerror(rc));
+		return 1;
+	}
+
+	/* Allocate a hardware parameters object. */
+	snd_pcm_hw_params_alloca(&params);
+
+	/* Fill it in with default values. */
+	rc = snd_pcm_hw_params_any(handle, params);
+	if (rc < 0)
+	{
+		fprintf(stderr, "Error:snd_pcm_hw_params_any %s\n", snd_strerror(rc));
+		return 1;
+	}
+
+	/* Set the desired hardware parameters. */
+
+	/* Interleaved mode */
+	rc = snd_pcm_hw_params_set_access(handle, params, SND_PCM_ACCESS_RW_INTERLEAVED);
+	if (rc < 0)
+	{
+		fprintf(stderr, "Error:snd_pcm_hw_params_set_access %s\n", snd_strerror(rc));
+		return 1;
+	}
+
+	/* Signed 16-bit little-endian format */
+	rc = snd_pcm_hw_params_set_format(handle, params, SND_PCM_FORMAT_S16_LE);
+	if (rc < 0)
+	{
+		fprintf(stderr, "Error:snd_pcm_hw_params_set_format %s\n", snd_strerror(rc));
+		return 1;
+	}
+
+	/* Two channels (stereo) */
+	rc = snd_pcm_hw_params_set_channels(handle, params, 2);
+	if (rc < 0)
+	{
+		fprintf(stderr, "Error:snd_pcm_hw_params_set_channels %s\n", snd_strerror(rc));
+		return 1;
+	}
+	
+	val = SOUND_OUTPUT_FREQUENCY;
+	rc = snd_pcm_hw_params_set_rate_near(handle, params, &val, &dir);
+	if (rc < 0)
+	{
+		fprintf(stderr, "Error:snd_pcm_hw_params_set_rate_near %s\n", snd_strerror(rc));
+		return 1;
+	}
+
+	/* Set period size to settings.aica.BufferSize frames. */
+	frames = SOUND_SAMPLES_SIZE;
+	rc = snd_pcm_hw_params_set_period_size_near(handle, params, &frames, &dir);
+	if (rc < 0)
+	{
+		fprintf(stderr, "Error:snd_pcm_hw_params_set_buffer_size_near %s\n", snd_strerror(rc));
+		return 1;
+	}
+	frames *= 4;
+	rc = snd_pcm_hw_params_set_buffer_size_near(handle, params, &frames);
+	if (rc < 0)
+	{
+		fprintf(stderr, "Error:snd_pcm_hw_params_set_buffer_size_near %s\n", snd_strerror(rc));
+		return 1;
+	}
+
+	/* Write the parameters to the driver */
+	rc = snd_pcm_hw_params(handle, params);
+	if (rc < 0)
+	{
+		fprintf(stderr, "Unable to set hw parameters: %s\n", snd_strerror(rc));
+		return 1;
+	}
+	
+	return 0;
+}
+
+void Audio_Write(int16_t* restrict buffer, uint32_t buffer_size)
+{
+	uint32_t i;
+	long ret, len;
+
+	if (!handle) return;
+	
+	len = buffer_size;
+	
+	ret = snd_pcm_writei(handle, buffer, len);
+	while(ret != len) 
+	{
+		if (ret < 0) 
+		{
+			snd_pcm_prepare( handle );
+		}
+		else 
+		{
+			len -= ret;
+		}
+		ret = snd_pcm_writei(handle, buffer, len);
+	}
+}
+
+void Audio_Close()
+{
+	if (handle)
+	{
+		snd_pcm_drain(handle);
+		snd_pcm_close(handle);
+	}
+}
diff --git a/shell/audio/oss/sound_output.c b/shell/audio/oss/sound_output.c
new file mode 100644
index 0000000..2d32b1f
--- /dev/null
+++ b/shell/audio/oss/sound_output.c
@@ -0,0 +1,59 @@
+#include <stdio.h>
+#include <sys/ioctl.h>
+#include <stdint.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/soundcard.h>
+
+#include "sound_output.h"
+
+static int32_t oss_audio_fd = -1;
+
+uint32_t Audio_Init()
+{
+	uint32_t channels = 2;
+	uint32_t format = AFMT_S16_LE;
+	uint32_t tmp = SOUND_OUTPUT_FREQUENCY;
+	int32_t err_ret;
+
+	oss_audio_fd = open("/dev/dsp", O_WRONLY | O_NONBLOCK);
+	if (oss_audio_fd < 0)
+	{
+		printf("Couldn't open /dev/dsp.\n");
+		return 1;
+	}
+	
+	err_ret = ioctl(oss_audio_fd, SNDCTL_DSP_SPEED,&tmp);
+	if (err_ret == -1)
+	{
+		printf("Could not set sound frequency\n");
+		return 1;
+	}
+	err_ret = ioctl(oss_audio_fd, SNDCTL_DSP_CHANNELS, &channels);
+	if (err_ret == -1)
+	{
+		printf("Could not set channels\n");
+		return 1;
+	}
+	err_ret = ioctl(oss_audio_fd, SNDCTL_DSP_SETFMT, &format);
+	if (err_ret == -1)
+	{
+		printf("Could not set sound format\n");
+		return 1;
+	}
+	return 0;
+}
+
+void Audio_Write(int16_t* restrict buffer, uint32_t buffer_size)
+{
+	write(oss_audio_fd, buffer, buffer_size * 4 );
+}
+
+void Audio_Close()
+{
+	if (oss_audio_fd >= 0)
+	{
+		close(oss_audio_fd);
+		oss_audio_fd = -1;
+	}
+}
diff --git a/shell/audio/portaudio/sound_output.c b/shell/audio/portaudio/sound_output.c
new file mode 100644
index 0000000..226db5c
--- /dev/null
+++ b/shell/audio/portaudio/sound_output.c
@@ -0,0 +1,41 @@
+#include <portaudio.h>
+#include <stdint.h>
+#include <stdio.h>
+
+#include "shared.h"
+
+static PaStream *apu_stream;
+
+uint32_t Audio_Init()
+{
+	Pa_Initialize();
+	
+	PaStreamParameters outputParameters;
+	
+	outputParameters.device = Pa_GetDefaultOutputDevice();
+	
+	if (outputParameters.device == paNoDevice) 
+	{
+		printf("No sound output\n");
+		return 1;
+	}
+
+	outputParameters.channelCount = 2;
+	outputParameters.sampleFormat = paInt16;
+	outputParameters.hostApiSpecificStreamInfo = NULL;
+	
+	Pa_OpenStream( &apu_stream, NULL, &outputParameters, SOUND_OUTPUT_FREQUENCY, SOUND_SAMPLES_SIZE, paNoFlag, NULL, NULL);
+	Pa_StartStream( apu_stream );
+	
+	return 0;
+}
+
+void Audio_Write(int16_t* restrict buffer, uint32_t buffer_size)
+{
+	Pa_WriteStream( apu_stream, buffer, buffer_size);
+}
+
+void Audio_Close()
+{
+	//Pa_Close();
+}
diff --git a/shell/audio/sdl/sound_output.c b/shell/audio/sdl/sound_output.c
new file mode 100644
index 0000000..f14bb1d
--- /dev/null
+++ b/shell/audio/sdl/sound_output.c
@@ -0,0 +1,104 @@
+#include <sys/ioctl.h>
+#include <stdint.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <SDL/SDL.h>
+
+#include "sound_output.h"
+
+static int32_t BUFFSIZE;
+static uint8_t *buffer;
+static uint32_t buf_read_pos = 0;
+static uint32_t buf_write_pos = 0;
+static int32_t buffered_bytes = 0;
+
+static int32_t sdl_read_buffer(uint8_t* data, int32_t len)
+{
+	if (buffered_bytes >= len) 
+	{
+		if(buf_read_pos + len <= BUFFSIZE ) 
+		{
+			memcpy(data, buffer + buf_read_pos, len);
+		} 
+		else 
+		{
+			int32_t tail = BUFFSIZE - buf_read_pos;
+			memcpy(data, buffer + buf_read_pos, tail);
+			memcpy(data + tail, buffer, len - tail);
+		}
+		buf_read_pos = (buf_read_pos + len) % BUFFSIZE;
+		buffered_bytes -= len;
+	}
+
+	return len;
+}
+
+
+static void sdl_write_buffer(uint8_t* data, int32_t len)
+{
+	for(uint32_t i = 0; i < len; i += 4) 
+	{
+		if(buffered_bytes == BUFFSIZE) return; // just drop samples
+		*(int32_t*)((char*)(buffer + buf_write_pos)) = *(int32_t*)((char*)(data + i));
+		//memcpy(buffer + buf_write_pos, data + i, 4);
+		buf_write_pos = (buf_write_pos + 4) % BUFFSIZE;
+		buffered_bytes += 4;
+	}
+}
+
+void sdl_callback(void *unused, uint8_t *stream, int32_t len)
+{
+	sdl_read_buffer((uint8_t *)stream, len);
+}
+uint32_t Audio_Init()
+{
+	SDL_AudioSpec aspec, obtained;
+
+	BUFFSIZE = (SOUND_SAMPLES_SIZE * 2 * 2) * 4;
+	buffer = (uint8_t *) malloc(BUFFSIZE);
+
+	/* Add some silence to the buffer */
+	buffered_bytes = 0;
+	buf_read_pos = 0;
+	buf_write_pos = 0;
+
+	aspec.format   = AUDIO_S16SYS;
+	aspec.freq     = SOUND_OUTPUT_FREQUENCY;
+	aspec.channels = 2;
+	aspec.samples  = SOUND_SAMPLES_SIZE;
+	aspec.callback = (sdl_callback);
+	aspec.userdata = NULL;
+
+	/* initialize the SDL Audio system */
+	if (SDL_InitSubSystem (SDL_INIT_AUDIO | SDL_INIT_NOPARACHUTE)) 
+	{
+		printf("SDL: Initializing of SDL Audio failed: %s.\n", SDL_GetError());
+		return 1;
+	}
+
+	/* Open the audio device and start playing sound! */
+	if(SDL_OpenAudio(&aspec, &obtained) < 0) 
+	{
+		printf("SDL: Unable to open audio: %s\n", SDL_GetError());
+		return 1;
+	}
+	
+	SDL_PauseAudio(0);
+	
+	return 0;
+}
+
+void Audio_Write(int16_t* restrict buffer, uint32_t buffer_size)
+{
+	SDL_LockAudio();
+	sdl_write_buffer(buffer, buffer_size * 4);
+	SDL_UnlockAudio();
+}
+
+void Audio_Close()
+{
+	SDL_PauseAudio(1);
+	SDL_CloseAudio();
+	SDL_QuitSubSystem(SDL_INIT_AUDIO);
+	buffer = NULL;
+}
diff --git a/shell/audio/sound_output.h b/shell/audio/sound_output.h
new file mode 100644
index 0000000..ba8a318
--- /dev/null
+++ b/shell/audio/sound_output.h
@@ -0,0 +1,10 @@
+#ifndef SOUND_OUTPUT_H
+#define SOUND_OUTPUT_H
+
+#include "shared.h"
+
+extern uint32_t Audio_Init();
+extern void Audio_Write(int16_t* restrict buffer, uint32_t buffer_size);
+extern void Audio_Close();
+
+#endif
diff --git a/shell/emu/core.c b/shell/emu/core.c
new file mode 100644
index 0000000..2edc457
--- /dev/null
+++ b/shell/emu/core.c
@@ -0,0 +1,435 @@
+// Author: skogaby
+// Lots of examples were followed using other emulators found on github
+
+#include <SDL/SDL.h>
+#include <libgen.h>
+#include <sys/time.h>
+#include <sys/types.h>
+
+#include "main.h"
+#include "snes9x.h"
+#include "soundux.h"
+#include "memmap.h"
+#include "apu.h"
+#include "apu_blargg.h"
+#include "cheats.h"
+#include "display.h"
+#include "gfx.h"
+#include "cpuexec.h"
+#include "spc7110.h"
+#include "srtc.h"
+#include "sa1.h"
+#include "scaler.h"
+
+#include "shared.h"
+#include "menu.h"
+#include "video_blit.h"
+#include "input.h"
+#include "sound_output.h"
+
+char GameName_emu[512];
+
+bool overclock_cycles = false;
+bool reduce_sprite_flicker = true;
+int one_c, slow_one_c, two_c;
+
+static int32_t samples_to_play = 0;
+static int32_t samples_per_frame = 0;
+static int32_t samplerate = (((SNES_CLOCK_SPEED * 6) / (32 * ONE_APU_CYCLE)));
+
+#ifdef USE_BLARGG_APU
+static void S9xAudioCallback()
+{
+   size_t avail;
+   /* Just pick a big buffer. We won't use it all. */
+   static int16_t audio_buf[0x20000];
+
+   S9xFinalizeSamples();
+   avail = S9xGetSampleCount();
+   S9xMixSamples(audio_buf, avail);
+   Audio_Write(audio_buf, avail >> 1);
+}
+#endif
+
+size_t retro_serialize_size(void)
+{
+   return sizeof(CPU) + sizeof(ICPU) + sizeof(PPU) + sizeof(DMA) +
+          0x10000 + 0x20000 + 0x20000 + 0x8000 +
+#ifndef USE_BLARGG_APU
+          sizeof(APU) + sizeof(IAPU) + 0x10000 +
+#else
+          SPC_SAVE_STATE_BLOCK_SIZE +
+#endif
+          sizeof(SA1) + sizeof(s7r) + sizeof(rtc_f9);
+}
+
+void RTC_Save(char* path, uint_fast8_t state)
+{
+	FILE* savefp;
+	
+	/* If RTC is disabled then don't bother saving any RTC info */
+	if (!Settings.SRTC) return;
+
+	if (state == 1)
+	{
+		savefp = fopen(path, "rb");
+		if (savefp)
+		{
+			if (Settings.SPC7110RTC)
+			{
+				fread(&rtc_f9, sizeof(uint8_t), sizeof(rtc_f9), savefp);
+				fclose(savefp);
+				S9xUpdateRTC();
+			}
+			else
+			{
+				fread(&rtc, sizeof(uint8_t), sizeof(rtc), savefp);
+				fclose(savefp);
+				S9xSRTCPostLoadState();
+			}
+		}
+	}
+	else
+	{
+		savefp = fopen(path, "wb");
+		if (savefp)
+		{
+			if (Settings.SPC7110RTC)
+			{
+				fwrite(&rtc_f9, sizeof(uint8_t), sizeof(rtc_f9), savefp);
+				fclose(savefp);
+				S9xUpdateRTC();
+			}
+			else
+			{
+				S9xSRTCPreSaveState();
+				fwrite(&rtc, sizeof(uint8_t), sizeof(rtc), savefp);
+				fclose(savefp);
+			}
+		}
+	}
+}
+
+void SRAM_Save(char* path, uint_fast8_t state)
+{
+	FILE* savefp;
+	
+	/* If SRAM is not used then don't bother saving any SRAM file */
+	if (Memory.SRAMMask == 0) return;
+
+	if (state == 1)
+	{
+		savefp = fopen(path, "rb");
+		if (savefp)
+		{
+			fread(Memory.SRAM, sizeof(uint8_t), Memory.SRAMMask, savefp);
+			fclose(savefp);
+		}
+	}
+	else
+	{
+		savefp = fopen(path, "wb");
+		if (savefp)
+		{
+			fwrite(Memory.SRAM, sizeof(uint8_t), Memory.SRAMMask, savefp);
+			fclose(savefp);
+		}
+	}
+}
+
+void SaveState(char* path, uint_fast8_t state)
+{
+#ifndef USE_BLARGG_APU
+	uint8_t* IAPU_RAM_current = IAPU.RAM;
+	uintptr_t IAPU_RAM_offset;
+#endif
+	char* buffer;
+	FILE* savefp;
+	
+#ifndef USE_BLARGG_APU
+	buffer = malloc(sizeof(APU) + sizeof(IAPU) + 0x10000);
+#else
+	buffer = malloc(SPC_SAVE_STATE_BLOCK_SIZE);
+#endif
+	
+	if (state == 1)
+	{
+		savefp = fopen(path, "rb");
+		if (savefp)
+		{
+			S9xReset();
+			
+			fread(&CPU, sizeof(uint8_t), sizeof(CPU), savefp);
+			fread(&ICPU, sizeof(uint8_t), sizeof(ICPU), savefp);
+			fread(&PPU, sizeof(uint8_t), sizeof(PPU), savefp);
+			fread(&DMA, sizeof(uint8_t), sizeof(DMA), savefp);
+		   
+			fread(Memory.VRAM, sizeof(uint8_t), 0x10000, savefp);
+			fread(Memory.RAM, sizeof(uint8_t), 0x20000, savefp);
+			fread(Memory.SRAM, sizeof(uint8_t), 0x20000, savefp);
+			fread(Memory.FillRAM, sizeof(uint8_t), 0x8000, savefp);
+
+			#ifndef USE_BLARGG_APU
+				fread(&APU, sizeof(uint8_t), sizeof(APU), savefp);
+				fread(&IAPU, sizeof(uint8_t), sizeof(IAPU), savefp);
+				IAPU_RAM_offset = IAPU_RAM_current - IAPU.RAM;
+				IAPU.PC += IAPU_RAM_offset;
+				IAPU.DirectPage += IAPU_RAM_offset;
+				IAPU.WaitAddress1 += IAPU_RAM_offset;
+				IAPU.WaitAddress2 += IAPU_RAM_offset;
+				IAPU.RAM = IAPU_RAM_current;
+				fread(IAPU.RAM, sizeof(uint8_t), 0x10000, savefp);
+			#else
+				S9xAPULoadState(buffer);
+				fread(buffer, sizeof(uint8_t), SPC_SAVE_STATE_BLOCK_SIZE, savefp);
+			#endif
+
+			SA1.Registers.PC = SA1.PC - SA1.PCBase;
+			S9xSA1PackStatus();
+			fread(&SA1, sizeof(uint8_t), sizeof(SA1), savefp);
+			fread(&s7r, sizeof(uint8_t), sizeof(s7r), savefp);
+			fread(&rtc_f9, sizeof(uint8_t), sizeof(rtc_f9), savefp);
+			fclose(savefp);
+			
+			S9xFixSA1AfterSnapshotLoad();
+			FixROMSpeed();
+			IPPU.ColorsChanged = true;
+			IPPU.OBJChanged = true;
+			CPU.InDMA = false;
+			S9xFixColourBrightness();
+			S9xSA1UnpackStatus();
+			#ifndef USE_BLARGG_APU
+				S9xAPUUnpackStatus();
+				S9xFixSoundAfterSnapshotLoad();
+			#endif
+			ICPU.ShiftedPB = ICPU.Registers.PB << 16;
+			ICPU.ShiftedDB = ICPU.Registers.DB << 16;
+			S9xSetPCBase(ICPU.ShiftedPB + ICPU.Registers.PC);
+			S9xUnpackStatus();
+			S9xFixCycles();
+			S9xReschedule();
+		}
+	}
+	else
+	{
+		savefp = fopen(path, "wb");
+		if (savefp)
+		{
+			#ifdef LAGFIX
+			S9xPackStatus();
+				#ifndef USE_BLARGG_APU
+					S9xAPUPackStatus();
+				#endif
+			#endif
+			
+			S9xUpdateRTC();
+			S9xSRTCPreSaveState();
+			fwrite(&CPU, sizeof(uint8_t), sizeof(CPU), savefp);
+			fwrite(&ICPU, sizeof(uint8_t), sizeof(ICPU), savefp);
+			fwrite(&PPU, sizeof(uint8_t), sizeof(PPU), savefp);
+			fwrite(&DMA, sizeof(uint8_t), sizeof(DMA), savefp);
+		   
+			fwrite(Memory.VRAM, sizeof(uint8_t), 0x10000, savefp);
+			fwrite(Memory.RAM, sizeof(uint8_t), 0x20000, savefp);
+			fwrite(Memory.SRAM, sizeof(uint8_t), 0x20000, savefp);
+			fwrite(Memory.FillRAM, sizeof(uint8_t), 0x8000, savefp);
+
+			#ifndef USE_BLARGG_APU
+				fwrite(&APU, sizeof(uint8_t), sizeof(APU), savefp);
+				fwrite(&IAPU, sizeof(uint8_t), sizeof(IAPU), savefp);
+				fwrite(IAPU.RAM, sizeof(uint8_t), 0x10000, savefp);
+			#else
+				S9xAPUSaveState(buffer);
+				fwrite(buffer, sizeof(uint8_t), SPC_SAVE_STATE_BLOCK_SIZE, savefp);
+			#endif
+
+			SA1.Registers.PC = SA1.PC - SA1.PCBase;
+			S9xSA1PackStatus();
+			fwrite(&SA1, sizeof(uint8_t), sizeof(SA1), savefp);
+			fwrite(&s7r, sizeof(uint8_t), sizeof(s7r), savefp);
+			fwrite(&rtc_f9, sizeof(uint8_t), sizeof(rtc_f9), savefp);
+			fclose(savefp);
+		}
+	}
+	
+	if (buffer) free(buffer);
+}
+
+void Emulation_Run (void)
+{
+#ifndef USE_BLARGG_APU
+	static int16_t audio_buf[2048];
+#endif
+	IPPU.RenderThisFrame = true;
+#ifdef USE_BLARGG_APU
+	S9xSetSoundMute(false);
+#endif
+	Settings.HardDisableAudio = false;
+
+	S9xMainLoop();
+
+#ifndef USE_BLARGG_APU
+	samples_to_play += samples_per_frame;
+
+	if (samples_to_play > 512)
+	{
+		S9xMixSamples(audio_buf, samples_to_play * 2);
+		Audio_Write(audio_buf, samples_to_play);
+		samples_to_play = 0;
+	}
+#else
+	S9xAudioCallback();
+#endif
+
+
+#ifdef FRAMESKIP
+	if (IPPU.RenderThisFrame)
+	{
+#endif
+		Update_Video_Ingame();
+#ifdef FRAMESKIP
+		IPPU.RenderThisFrame = false;
+	}
+	else
+	{
+		IPPU.RenderThisFrame = true;
+	}
+#endif
+}
+
+
+bool Load_Game_Memory(char* game_path)
+{
+	uint64_t fps;
+	CPU.Flags = 0;
+
+	if (!LoadROM(game_path))
+		return false;
+
+	Settings.FrameTime = (Settings.PAL ? Settings.FrameTimePAL : Settings.FrameTimeNTSC);
+	
+   if (!Settings.PAL)
+      fps = (SNES_CLOCK_SPEED * 6.0 / (SNES_CYCLES_PER_SCANLINE * SNES_MAX_NTSC_VCOUNTER));
+   else
+      fps = (SNES_CLOCK_SPEED * 6.0 / (SNES_CYCLES_PER_SCANLINE * SNES_MAX_PAL_VCOUNTER));
+      
+	samplerate = SOUND_OUTPUT_FREQUENCY;
+	Settings.SoundPlaybackRate = samplerate;
+   
+#ifndef USE_BLARGG_APU
+	samples_per_frame = samplerate / fps;
+	S9xSetPlaybackRate(Settings.SoundPlaybackRate);
+#endif
+	return true;
+}
+
+
+void init_sfc_setting(void)
+{
+   memset(&Settings, 0, sizeof(Settings));
+   Settings.JoystickEnabled = false;
+   Settings.SoundPlaybackRate = samplerate;
+   Settings.CyclesPercentage = 100;
+
+   Settings.DisableSoundEcho = false;
+   Settings.InterpolatedSound = true;
+   Settings.APUEnabled = true;
+
+   Settings.H_Max = SNES_CYCLES_PER_SCANLINE;
+   Settings.FrameTimePAL = 20000;
+   Settings.FrameTimeNTSC = 16667;
+   Settings.DisableMasterVolume = false;
+   Settings.Mouse = true;
+   Settings.SuperScope = true;
+   Settings.MultiPlayer5 = true;
+   Settings.ControllerOption = SNES_JOYPAD;
+#ifdef USE_BLARGG_APU
+   Settings.SoundSync = false;
+#endif
+   Settings.ApplyCheats = true;
+   Settings.HBlankStart = (256 * Settings.H_Max) / SNES_HCOUNTER_MAX;
+}
+
+void Init_SFC(void)
+{
+   init_sfc_setting();
+   S9xInitMemory();
+   S9xInitAPU();
+   S9xInitDisplay();
+   S9xInitGFX();
+#ifdef USE_BLARGG_APU
+   S9xInitSound(1000, 0); /* just give it a 1 second buffer */
+   S9xSetSamplesAvailableCallback(S9xAudioCallback);
+#else
+   S9xInitSound();
+#endif
+   CPU.SaveStateVersion = 0;
+}
+
+void Deinit_SFC(void)
+{
+   if (Settings.SPC7110)
+      Del7110Gfx();
+
+   S9xDeinitGFX();
+   S9xDeinitDisplay();
+   S9xDeinitAPU();
+   S9xDeinitMemory();
+}
+
+
+
+/* Main entrypoint of the emulator */
+int main(int argc, char* argv[])
+{
+	int isloaded;
+	
+	printf("Starting Snes9x2005\n");
+    
+	if (argc < 2)
+	{
+		printf("Specify a ROM to load in memory\n");
+		return 0;
+	}
+	
+	snprintf(GameName_emu, sizeof(GameName_emu), "%s", basename(argv[1]));
+	Init_Video();
+	
+	overclock_cycles = true;
+	one_c = 4;
+	slow_one_c = 5;
+	two_c = 6;
+	reduce_sprite_flicker = true;
+	
+	Audio_Init();
+	Init_SFC();
+	
+	isloaded = Load_Game_Memory(argv[1]);
+	if (!isloaded)
+	{
+		printf("Could not load ROM in memory\n");
+		return 0;
+	}
+	
+	Init_Configuration();
+	
+    // get the game ready
+    while (!exit_snes)
+    {
+		switch(emulator_state)
+		{
+			case 0:
+				Emulation_Run();
+			break;
+			case 1:
+				Menu();
+			break;
+		}
+    }
+    
+	Deinit_SFC();
+    Audio_Close();
+    Video_Close();
+
+    return 0;
+}
diff --git a/shell/emu/main.h b/shell/emu/main.h
new file mode 100644
index 0000000..43688c3
--- /dev/null
+++ b/shell/emu/main.h
@@ -0,0 +1,9 @@
+#ifndef MAIN_H
+#define MAIN_H
+
+int ResumeEmulation;
+// utility functions that the core requires us to implement
+extern const char* S9xGetFilename(const char* extension);
+extern const char* S9xGetDirectory(uint32_t dirtype);
+
+#endif
diff --git a/shell/headers/boolean.h b/shell/headers/boolean.h
new file mode 100644
index 0000000..2c18ef7
--- /dev/null
+++ b/shell/headers/boolean.h
@@ -0,0 +1,39 @@
+/* Copyright  (C) 2010-2017 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (boolean.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __LIBRETRO_SDK_BOOLEAN_H
+#define __LIBRETRO_SDK_BOOLEAN_H
+
+#ifndef __cplusplus
+
+#if defined(_MSC_VER) && !defined(SN_TARGET_PS3)
+/* Hack applied for MSVC when compiling in C89 mode as it isn't C99 compliant. */
+#define bool unsigned char
+#define true 1
+#define false 0
+#else
+#include <stdbool.h>
+#endif
+
+#endif
+
+#endif
diff --git a/shell/headers/retro_inline.h b/shell/headers/retro_inline.h
new file mode 100644
index 0000000..ffdaa4a
--- /dev/null
+++ b/shell/headers/retro_inline.h
@@ -0,0 +1,39 @@
+/* Copyright  (C) 2010-2017 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (retro_inline.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __LIBRETRO_SDK_INLINE_H
+#define __LIBRETRO_SDK_INLINE_H
+
+#ifndef INLINE
+
+#if defined(_WIN32) || defined(__INTEL_COMPILER)
+#define INLINE __inline
+#elif defined(__STDC_VERSION__) && __STDC_VERSION__>=199901L
+#define INLINE inline
+#elif defined(__GNUC__)
+#define INLINE __inline__
+#else
+#define INLINE
+#endif
+
+#endif
+#endif
diff --git a/shell/headers/shared.h b/shell/headers/shared.h
new file mode 100644
index 0000000..a44f60e
--- /dev/null
+++ b/shell/headers/shared.h
@@ -0,0 +1,31 @@
+#ifndef SHARED_H
+#define SHARED_H
+
+#define SOUND_OUTPUT_FREQUENCY 44100
+#define SOUND_SAMPLES_SIZE 1024
+
+/*
+#if defined(BITTBOY)
+#define SOUND_OUTPUT_FREQUENCY 22050
+#define SOUND_SAMPLES_SIZE 1024
+#elif defined(RS97)
+#define SOUND_OUTPUT_FREQUENCY 22050
+#define SOUND_SAMPLES_SIZE 1024
+#elif defined(ARCADEMINI)
+#define SOUND_OUTPUT_FREQUENCY 22050
+#define SOUND_SAMPLES_SIZE 1024
+#elif defined(RETROSTONE_1)
+#define SOUND_OUTPUT_FREQUENCY 48000
+#define SOUND_SAMPLES_SIZE 2048
+#elif defined(RETROSTONE_2)
+#define SOUND_OUTPUT_FREQUENCY 48000
+#define SOUND_SAMPLES_SIZE 2048
+#elif defined(ZIPIT)
+#define SOUND_OUTPUT_FREQUENCY 44100
+#define SOUND_SAMPLES_SIZE 1024
+#else
+#define SOUND_OUTPUT_FREQUENCY 48000
+#define SOUND_SAMPLES_SIZE 2048
+#endif
+*/
+#endif
diff --git a/shell/input/input.h b/shell/input/input.h
new file mode 100644
index 0000000..a1a89c1
--- /dev/null
+++ b/shell/input/input.h
@@ -0,0 +1,6 @@
+#ifndef INPUT_H
+#define INPUT_H
+#include <stdint.h>
+uint32_t S9xReadJoypad(int32_t port);
+extern uint8_t exit_snes;
+#endif
diff --git a/shell/input/sdl/input.c b/shell/input/sdl/input.c
new file mode 100644
index 0000000..357f7d1
--- /dev/null
+++ b/shell/input/sdl/input.c
@@ -0,0 +1,74 @@
+#include <SDL/SDL.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <portaudio.h>
+#include "main.h"
+#include "snes9x.h"
+#include "soundux.h"
+#include "memmap.h"
+#include "apu.h"
+#include "cheats.h"
+#include "display.h"
+#include "gfx.h"
+#include "cpuexec.h"
+#include "spc7110.h"
+#include "srtc.h"
+#include "sa1.h"
+#include "scaler.h"
+
+#include "menu.h"
+#include "config.h"
+
+uint8_t *keystate;
+uint8_t exit_snes = 0;
+extern uint32_t emulator_state;
+
+#define CASE(realkey, key) \
+	if (keystate[realkey]) \
+		joypad |= key; \
+	else \
+		joypad &= ~key; \
+
+uint32_t S9xReadJoypad(int32_t port)
+{
+	SDL_Event event;
+	static const uint32_t snes_lut[] =
+	{
+      SNES_B_MASK,
+      SNES_Y_MASK,
+      SNES_SELECT_MASK,
+      SNES_START_MASK,
+      SNES_UP_MASK,
+      SNES_DOWN_MASK,
+      SNES_LEFT_MASK,
+      SNES_RIGHT_MASK,
+      SNES_A_MASK,
+      SNES_X_MASK,
+      SNES_TL_MASK,
+      SNES_TR_MASK
+	};
+
+	int32_t i;
+	uint32_t joypad = 0;
+	
+	keystate = SDL_GetKeyState(NULL);
+	
+	SDL_PollEvent(&event);
+
+	CASE(SDLK_RETURN, SNES_START_MASK);
+	CASE(SDLK_ESCAPE, SNES_SELECT_MASK);
+	CASE(SDLK_LCTRL, SNES_A_MASK);
+	CASE(SDLK_LALT, SNES_B_MASK);
+	CASE(SDLK_LSHIFT, SNES_X_MASK);
+	CASE(SDLK_SPACE, SNES_Y_MASK);
+	CASE(SDLK_TAB, SNES_TL_MASK);
+	CASE(SDLK_BACKSPACE, SNES_TR_MASK);
+	CASE(SDLK_UP, SNES_UP_MASK);
+	CASE(SDLK_LEFT, SNES_LEFT_MASK);
+	CASE(SDLK_RIGHT, SNES_RIGHT_MASK);
+	CASE(SDLK_DOWN, SNES_DOWN_MASK);
+	
+	if (keystate[SDLK_END])	emulator_state = 1;
+
+   return joypad;
+}
diff --git a/shell/menu/config.h b/shell/menu/config.h
new file mode 100644
index 0000000..9b71fc2
--- /dev/null
+++ b/shell/menu/config.h
@@ -0,0 +1,11 @@
+#ifndef CONFIG_H__
+#define CONFIG_H__
+
+typedef struct {
+	int32_t fullscreen;
+	/* For input remapping */
+	uint32_t config_buttons[6][19];
+} t_config;
+extern t_config option;
+
+#endif
diff --git a/shell/menu/font_drawing.c b/shell/menu/font_drawing.c
new file mode 100644
index 0000000..c1c97b9
--- /dev/null
+++ b/shell/menu/font_drawing.c
@@ -0,0 +1,131 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+#include "video_blit.h"
+#include "font_drawing.h"
+#include "font_menudata.h"
+
+extern int32_t screen_width;
+//#define setPixel(buffer, x,y,c) 
+
+static inline void setPixel(uint16_t* restrict buffer, uint32_t x, uint32_t y, uint16_t c)
+{
+	if (x < HOST_WIDTH_RESOLUTION && y < HOST_HEIGHT_RESOLUTION)
+	{
+		*((uint16_t* restrict)buffer + ((x) + (y) * HOST_WIDTH_RESOLUTION)) = c;
+	}
+}
+
+static int32_t isOutlinePixel(uint8_t* charfont, uint32_t x, uint32_t y)
+{
+	uint32_t xis0 = !x, xis7 = x == 7, yis0 = !y, yis7 = y == 7;
+	
+	if(xis0)
+	{
+		if (yis0)
+		{
+			return !(*charfont & 0x80) && ((*charfont & 0x40) || (charfont[1] & 0x80) || (charfont[1] & 0x40));
+		}
+		else if (yis7)
+		{
+			return !(charfont[7] & 0x80) && ((charfont[7] & 0x40) || (charfont[6] & 0x80) || (charfont[6] & 0x40));
+		}
+		else
+		{
+			return !(charfont[y] & 0x80) && (
+				(charfont[y - 1] & 0x80) || (charfont[y - 1] & 0x40) ||
+				(charfont[y] & 0x40) ||
+				(charfont[y + 1] & 0x80) || (charfont[y + 1] & 0x40));
+		}
+	}
+	else if (xis7)
+	{
+		if (yis0)
+		{
+			return !(*charfont & 0x01) && ((*charfont & 0x02) || (charfont[1] & 0x01) || (charfont[1] & 0x02));
+		}
+		else if (yis7)
+		{
+			return !(charfont[7] & 0x01) && ((charfont[7] & 0x02) || (charfont[6] & 0x01) || (charfont[6] & 0x02));
+		}
+		else
+		{
+			return !(charfont[y] & 0x01) && (
+				(charfont[y - 1] & 0x01) || (charfont[y - 1] & 0x02) ||
+				(charfont[y] & 0x02) ||
+				(charfont[y + 1] & 0x01) || (charfont[y + 1] & 0x02));
+		}
+	}
+	else
+	{
+		uint32_t b = 1 << (7 - x);
+		if (yis0)
+		{
+			return !(*charfont & b) && (
+				(*charfont & (b << 1)) || (*charfont & (b >> 1)) ||
+				(charfont[1] & (b << 1)) || (charfont[1] & b) || (charfont[1] & (b >> 1)));
+		}
+		else if (yis7)
+		{
+			return !(charfont[7] & b) && (
+				(charfont[7] & (b << 1)) || (charfont[7] & (b >> 1)) ||
+				(charfont[6] & (b << 1)) || (charfont[6] & b) || (charfont[6] & (b >> 1)));
+		}
+		else
+		{
+			return !(charfont[y] & b) && (
+				(charfont[y] & (b << 1)) || (charfont[y] & (b >> 1)) ||
+				(charfont[y - 1] & (b << 1)) || (charfont[y - 1] & b) || (charfont[y - 1] & (b >> 1)) ||
+				(charfont[y + 1] & (b << 1)) || (charfont[y + 1] & b) || (charfont[y + 1] & (b >> 1)));
+		}
+	}
+}
+
+static void drawChar(uint16_t* restrict buffer, uint32_t *x, uint32_t *y, uint32_t margin, char ch, uint16_t fc, uint16_t olc)
+{
+	uint32_t i, j;
+	uint8_t *charSprite;
+	if (ch == '\n')
+	{
+		*x = margin;
+		*y += 8;
+	}
+	else if(*y < (HOST_HEIGHT_RESOLUTION-1))
+	{
+		charSprite = ch * 8 + n2DLib_font;
+		// Draw charSprite as monochrome 8*8 image using given color
+		for(i = 0; i < 8; i++)
+		{
+			for(j = 7; j; j--)
+			{
+				if((charSprite[i] >> j) & 1)
+				{
+					setPixel(buffer, *x + (7 - j), *y + i, fc);
+				}
+				else if(isOutlinePixel(charSprite, 7 - j, i))
+				{
+					setPixel(buffer, *x + (7 - j), *y + i, olc);
+				}
+			}
+		}
+		*x += 8;
+	}
+}
+
+static void drawString(uint16_t* restrict buffer, uint32_t *x, uint32_t *y, uint32_t _x, const char *str, uint16_t fc, uint16_t olc)
+{
+	uint32_t i;
+	size_t size_font;
+
+	size_font = strnlen(str, (HOST_WIDTH_RESOLUTION/8)) + 1;
+	for(i = 0; i <  size_font; i++)
+		drawChar(buffer, x, y, _x, str[i], fc, olc);
+}
+
+void print_string(const char *s, const uint16_t fg_color, const uint16_t bg_color, uint32_t x, uint32_t y, uint16_t* restrict buffer) 
+{
+	if (!s) return;
+	
+	drawString(buffer, &x, &y, 0, s, fg_color, bg_color);
+}
diff --git a/shell/menu/font_drawing.h b/shell/menu/font_drawing.h
new file mode 100644
index 0000000..e18ea04
--- /dev/null
+++ b/shell/menu/font_drawing.h
@@ -0,0 +1,13 @@
+#ifndef FONT_DRAWING_H
+#define FONT_DRAWING_H
+
+#include <stdint.h>
+#include <string.h>
+
+#define TextWhite 65535
+#define TextRed ((255>>3)<<11) + ((0>>2)<<5) + (0>>3)
+#define TextBlue ((0>>3)<<11) + ((0>>2)<<5) + (255>>3)
+
+void print_string(const char *s, const uint16_t fg_color, const uint16_t bg_color, uint32_t x, uint32_t y, uint16_t* restrict buffer);
+
+#endif
diff --git a/shell/menu/font_menudata.h b/shell/menu/font_menudata.h
new file mode 100644
index 0000000..f5a8cbc
--- /dev/null
+++ b/shell/menu/font_menudata.h
@@ -0,0 +1,135 @@
+#ifndef n2DLIB_FONT

+#define n2DLIB_FONT

+

+static uint8_t n2DLib_font[] =

+{

+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* Char 000 (.) */

+	0x7E, 0x81, 0xA5, 0x81, 0xBD, 0x99, 0x81, 0x7E,	/* Char 001 (.) */

+	0x7E, 0xFF, 0xDB, 0xFF, 0xC3, 0xE7, 0xFF, 0x7E,	/* Char 002 (.) */

+	0x6C, 0xFE, 0xFE, 0xFE, 0x7C, 0x38, 0x10, 0x00,	/* Char 003 (.) */

+	0x10, 0x38, 0x7C, 0xFE, 0x7C, 0x38, 0x10, 0x00,	/* Char 004 (.) */

+	0x38, 0x7C, 0x38, 0xFE, 0xFE, 0x7C, 0x38, 0x7C,	/* Char 005 (.) */

+	0x10, 0x10, 0x38, 0x7C, 0xFE, 0x7C, 0x38, 0x7C,	/* Char 006 (.) */

+	0x00, 0x00, 0x18, 0x3C, 0x3C, 0x18, 0x00, 0x00,	/* Char 007 (.) */

+	0xFF, 0xFF, 0xE7, 0xC3, 0xC3, 0xE7, 0xFF, 0xFF,	/* Char 008 (.) */

+	0x00, 0x3C, 0x66, 0x42, 0x42, 0x66, 0x3C, 0x00,	/* Char 009 (.) */

+	0xFF, 0xC3, 0x99, 0xBD, 0xBD, 0x99, 0xC3, 0xFF,	/* Char 010 (.) */

+	0x0F, 0x07, 0x0F, 0x7D, 0xCC, 0xCC, 0xCC, 0x78,	/* Char 011 (.) */

+	0x3C, 0x66, 0x66, 0x66, 0x3C, 0x18, 0x7E, 0x18,	/* Char 012 (.) */

+	0x3F, 0x33, 0x3F, 0x30, 0x30, 0x70, 0xF0, 0xE0,	/* Char 013 (.) */

+	0x7F, 0x63, 0x7F, 0x63, 0x63, 0x67, 0xE6, 0xC0,	/* Char 014 (.) */

+	0x99, 0x5A, 0x3C, 0xE7, 0xE7, 0x3C, 0x5A, 0x99,	/* Char 015 (.) */

+	0x80, 0xE0, 0xF8, 0xFE, 0xF8, 0xE0, 0x80, 0x00,	/* Char 016 (.) */

+	0x02, 0x0E, 0x3E, 0xFE, 0x3E, 0x0E, 0x02, 0x00,	/* Char 017 (.) */

+	0x18, 0x3C, 0x7E, 0x18, 0x18, 0x7E, 0x3C, 0x18,	/* Char 018 (.) */

+	0x66, 0x66, 0x66, 0x66, 0x66, 0x00, 0x66, 0x00,	/* Char 019 (.) */

+	0x7F, 0xDB, 0xDB, 0x7B, 0x1B, 0x1B, 0x1B, 0x00,	/* Char 020 (.) */

+	0x3E, 0x63, 0x38, 0x6C, 0x6C, 0x38, 0xCC, 0x78,	/* Char 021 (.) */

+	0x00, 0x00, 0x00, 0x00, 0x7E, 0x7E, 0x7E, 0x00,	/* Char 022 (.) */

+	0x18, 0x3C, 0x7E, 0x18, 0x7E, 0x3C, 0x18, 0xFF,	/* Char 023 (.) */

+	0x18, 0x3C, 0x7E, 0x18, 0x18, 0x18, 0x18, 0x00,	/* Char 024 (.) */

+	0x18, 0x18, 0x18, 0x18, 0x7E, 0x3C, 0x18, 0x00,	/* Char 025 (.) */

+	0x00, 0x18, 0x0C, 0xFE, 0x0C, 0x18, 0x00, 0x00,	/* Char 026 (<=)*/ 

+	0x00, 0x30, 0x60, 0xFE, 0x60, 0x30, 0x00, 0x00,	/* Char 027 (.) */

+	0x00, 0x00, 0xC0, 0xC0, 0xC0, 0xFE, 0x00, 0x00,	/* Char 028 (.) */

+	0x00, 0x24, 0x66, 0xFF, 0x66, 0x24, 0x00, 0x00,	/* Char 029 (.) */

+	0x00, 0x18, 0x3C, 0x7E, 0xFF, 0xFF, 0x00, 0x00,	/* Char 030 (.) */

+	0x00, 0xFF, 0xFF, 0x7E, 0x3C, 0x18, 0x00, 0x00,	/* Char 031 (.) */

+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* Char 032 ( ) */

+	0x40, 0x40, 0x40, 0x40, 0x40, 0x00, 0x40, 0x00,	/* Char 033 (!) */

+	0x90, 0x90, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* Char 034 (") */

+	0x50, 0x50, 0xF8, 0x50, 0xF8, 0x50, 0x50, 0x00,	/* Char 035 (#) */

+	0x20, 0x78, 0xA0, 0x70, 0x28, 0xF0, 0x20, 0x00,	/* Char 036 ($) */

+	0xC8, 0xC8, 0x10, 0x20, 0x40, 0x98, 0x98, 0x00,	/* Char 037 (%) */

+	0x70, 0x88, 0x50, 0x20, 0x54, 0x88, 0x74, 0x00,	/* Char 038 (&) */

+	0x60, 0x20, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,	/* Char 039 (') */

+	0x20, 0x40, 0x80, 0x80, 0x80, 0x40, 0x20, 0x00,	/* Char 040 (() */

+	0x20, 0x10, 0x08, 0x08, 0x08, 0x10, 0x20, 0x00,	/* Char 041 ()  */

+	0x00, 0x20, 0xA8, 0x70, 0x70, 0xA8, 0x20, 0x00,	/* Char 042 (*) */

+	0x00, 0x00, 0x20, 0x20, 0xF8, 0x20, 0x20, 0x00,	/* Char 043 (+) */

+	0x00, 0x00, 0x00, 0x00, 0x00, 0x60, 0x20, 0x40,	/* Char 044 (,) */

+	0x00, 0x00, 0x00, 0x00, 0xF8, 0x00, 0x00, 0x00,	/* Char 045 (-) */

+	0x00, 0x00, 0x00, 0x00, 0x00, 0x60, 0x60, 0x00,	/* Char 046 (.) */

+	0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x00,	/* Char 047 (/) */

+	0x70, 0x88, 0x98, 0xA8, 0xC8, 0x88, 0x70, 0x00,	/* Char 048 (0) */

+	0x40, 0xC0, 0x40, 0x40, 0x40, 0x40, 0xE0, 0x00,	/* Char 049 (1) */

+	0x70, 0x88, 0x08, 0x10, 0x20, 0x40, 0xF8, 0x00,	/* Char 050 (2) */

+	0x70, 0x88, 0x08, 0x10, 0x08, 0x88, 0x70, 0x00,	/* Char 051 (3) */

+	0x08, 0x18, 0x28, 0x48, 0xFC, 0x08, 0x08, 0x00,	/* Char 052 (4) */

+	0xF8, 0x80, 0x80, 0xF0, 0x08, 0x88, 0x70, 0x00,	/* Char 053 (5) */

+	0x20, 0x40, 0x80, 0xF0, 0x88, 0x88, 0x70, 0x00,	/* Char 054 (6) */

+	0xF8, 0x08, 0x10, 0x20, 0x40, 0x40, 0x40, 0x00,	/* Char 055 (7) */

+	0x70, 0x88, 0x88, 0x70, 0x88, 0x88, 0x70, 0x00,	/* Char 056 (8) */

+	0x70, 0x88, 0x88, 0x78, 0x08, 0x08, 0x70, 0x00,	/* Char 057 (9) */

+	0x00, 0x00, 0x60, 0x60, 0x00, 0x60, 0x60, 0x00,	/* Char 058 (:) */

+	0x00, 0x00, 0x60, 0x60, 0x00, 0x60, 0x60, 0x20,	/* Char 059 (;) */

+	0x10, 0x20, 0x40, 0x80, 0x40, 0x20, 0x10, 0x00,	/* Char 060 (<) */

+	0x00, 0x00, 0xF8, 0x00, 0xF8, 0x00, 0x00, 0x00,	/* Char 061 (=) */

+	0x80, 0x40, 0x20, 0x10, 0x20, 0x40, 0x80, 0x00,	/* Char 062 (>) */

+	0x78, 0x84, 0x04, 0x08, 0x10, 0x00, 0x10, 0x00,	/* Char 063 (?) */

+	0x70, 0x88, 0x88, 0xA8, 0xB8, 0x80, 0x78, 0x00,	/* Char 064 (@) */

+	0x20, 0x50, 0x88, 0x88, 0xF8, 0x88, 0x88, 0x00,	/* Char 065 (A) */

+	0xF0, 0x88, 0x88, 0xF0, 0x88, 0x88, 0xF0, 0x00,	/* Char 066 (B) */

+	0x70, 0x88, 0x80, 0x80, 0x80, 0x88, 0x70, 0x00,	/* Char 067 (C) */

+	0xF0, 0x88, 0x88, 0x88, 0x88, 0x88, 0xF0, 0x00,	/* Char 068 (D) */

+	0xF8, 0x80, 0x80, 0xE0, 0x80, 0x80, 0xF8, 0x00,	/* Char 069 (E) */

+	0xF8, 0x80, 0x80, 0xE0, 0x80, 0x80, 0x80, 0x00,	/* Char 070 (F) */

+	0x70, 0x88, 0x80, 0x80, 0x98, 0x88, 0x78, 0x00,	/* Char 071 (G) */

+	0x88, 0x88, 0x88, 0xF8, 0x88, 0x88, 0x88, 0x00,	/* Char 072 (H) */

+	0xE0, 0x40, 0x40, 0x40, 0x40, 0x40, 0xE0, 0x00,	/* Char 073 (I) */

+	0x38, 0x10, 0x10, 0x10, 0x10, 0x90, 0x60, 0x00,	/* Char 074 (J) */

+	0x88, 0x90, 0xA0, 0xC0, 0xA0, 0x90, 0x88, 0x00,	/* Char 075 (K) */

+	0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0xF8, 0x00,	/* Char 076 (L) */

+	0x82, 0xC6, 0xAA, 0x92, 0x82, 0x82, 0x82, 0x00,	/* Char 077 (M) */

+	0x84, 0xC4, 0xA4, 0x94, 0x8C, 0x84, 0x84, 0x00,	/* Char 078 (N) */

+	0x70, 0x88, 0x88, 0x88, 0x88, 0x88, 0x70, 0x00,	/* Char 079 (O) */

+	0xF0, 0x88, 0x88, 0xF0, 0x80, 0x80, 0x80, 0x00,	/* Char 080 (P) */

+	0x70, 0x88, 0x88, 0x88, 0xA8, 0x90, 0x68, 0x00,	/* Char 081 (Q) */

+	0xF0, 0x88, 0x88, 0xF0, 0xA0, 0x90, 0x88, 0x00,	/* Char 082 (R) */

+	0x70, 0x88, 0x80, 0x70, 0x08, 0x88, 0x70, 0x00,	/* Char 083 (S) */

+	0xF8, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00,	/* Char 084 (T) */

+	0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x70, 0x00,	/* Char 085 (U) */

+	0x88, 0x88, 0x88, 0x50, 0x50, 0x20, 0x20, 0x00,	/* Char 086 (V) */

+	0x82, 0x82, 0x82, 0x82, 0x92, 0x92, 0x6C, 0x00,	/* Char 087 (W) */

+	0x88, 0x88, 0x50, 0x20, 0x50, 0x88, 0x88, 0x00,	/* Char 088 (X) */

+	0x88, 0x88, 0x88, 0x50, 0x20, 0x20, 0x20, 0x00,	/* Char 089 (Y) */

+	0xF8, 0x08, 0x10, 0x20, 0x40, 0x80, 0xF8, 0x00,	/* Char 090 (Z) */

+	0xE0, 0x80, 0x80, 0x80, 0x80, 0x80, 0xE0, 0x00,	/* Char 091 ([) */

+	0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x00,	/* Char 092 (\) */

+	0xE0, 0x20, 0x20, 0x20, 0x20, 0x20, 0xE0, 0x00,	/* Char 093 (]) */

+	0x20, 0x50, 0x88, 0x00, 0x00, 0x00, 0x00, 0x00,	/* Char 094 (^) */

+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF8, 0x00,	/* Char 095 (_) */

+	0x40, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* Char 096 (`) */

+	0x00, 0x00, 0x70, 0x08, 0x78, 0x88, 0x74, 0x00,	/* Char 097 (a) */

+	0x80, 0x80, 0xB0, 0xC8, 0x88, 0xC8, 0xB0, 0x00,	/* Char 098 (b) */

+	0x00, 0x00, 0x70, 0x88, 0x80, 0x88, 0x70, 0x00,	/* Char 099 (c) */

+	0x08, 0x08, 0x68, 0x98, 0x88, 0x98, 0x68, 0x00,	/* Char 100 (d) */

+	0x00, 0x00, 0x70, 0x88, 0xF8, 0x80, 0x70, 0x00,	/* Char 101 (e) */

+	0x30, 0x48, 0x40, 0xE0, 0x40, 0x40, 0x40, 0x00,	/* Char 102 (f) */

+	0x00, 0x00, 0x34, 0x48, 0x48, 0x38, 0x08, 0x30,	/* Char 103 (g) */

+	0x80, 0x80, 0xB0, 0xC8, 0x88, 0x88, 0x88, 0x00,	/* Char 104 (h) */

+	0x20, 0x00, 0x60, 0x20, 0x20, 0x20, 0x70, 0x00,	/* Char 105 (i) */

+	0x10, 0x00, 0x30, 0x10, 0x10, 0x10, 0x90, 0x60,	/* Char 106 (j) */

+	0x80, 0x80, 0x88, 0x90, 0xA0, 0xD0, 0x88, 0x00,	/* Char 107 (k) */

+	0xC0, 0x40, 0x40, 0x40, 0x40, 0x40, 0xE0, 0x00,	/* Char 108 (l) */

+	0x00, 0x00, 0xEC, 0x92, 0x92, 0x92, 0x92, 0x00,	/* Char 109 (m) */

+	0x00, 0x00, 0xB0, 0xC8, 0x88, 0x88, 0x88, 0x00,	/* Char 110 (n) */

+	0x00, 0x00, 0x70, 0x88, 0x88, 0x88, 0x70, 0x00,	/* Char 111 (o) */

+	0x00, 0x00, 0xB0, 0xC8, 0xC8, 0xB0, 0x80, 0x80,	/* Char 112 (p) */

+	0x00, 0x00, 0x68, 0x98, 0x98, 0x68, 0x08, 0x08,	/* Char 113 (q) */

+	0x00, 0x00, 0xB0, 0xC8, 0x80, 0x80, 0x80, 0x00,	/* Char 114 (r) */

+	0x00, 0x00, 0x78, 0x80, 0x70, 0x08, 0xF0, 0x00,	/* Char 115 (s) */

+	0x40, 0x40, 0xE0, 0x40, 0x40, 0x50, 0x20, 0x00,	/* Char 116 (t) */

+	0x00, 0x00, 0x88, 0x88, 0x88, 0x98, 0x68, 0x00,	/* Char 117 (u) */

+	0x00, 0x00, 0x88, 0x88, 0x88, 0x50, 0x20, 0x00,	/* Char 118 (v) */

+	0x00, 0x00, 0x82, 0x82, 0x92, 0x92, 0x6C, 0x00,	/* Char 119 (w) */

+	0x00, 0x00, 0x88, 0x50, 0x20, 0x50, 0x88, 0x00,	/* Char 120 (x) */

+	0x00, 0x00, 0x88, 0x88, 0x98, 0x68, 0x08, 0x70,	/* Char 121 (y) */

+	0x00, 0x00, 0xF8, 0x10, 0x20, 0x40, 0xF8, 0x00,	/* Char 122 (z) */

+	0x10, 0x20, 0x20, 0x40, 0x20, 0x20, 0x10, 0x00,	/* Char 123 ({) */

+	0x40, 0x40, 0x40, 0x00, 0x40, 0x40, 0x40, 0x00,	/* Char 124 (|) */

+	0x40, 0x20, 0x20, 0x10, 0x20, 0x20, 0x40, 0x00,	/* Char 125 (}) */

+	0x76, 0xDC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* Char 126 (~) */

+	0x00, 0x10, 0x38, 0x6C, 0xC6, 0xC6, 0xFE, 0x00	/* Char 127 (.) */

+};

+#endif

diff --git a/shell/menu/menu.c b/shell/menu/menu.c
new file mode 100644
index 0000000..70096bf
--- /dev/null
+++ b/shell/menu/menu.c
@@ -0,0 +1,597 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <libgen.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <time.h>
+#include <SDL/SDL.h>
+
+#include "scaler.h"
+#include "font_drawing.h"
+#include "sound_output.h"
+#include "video_blit.h"
+#include "config.h"
+#include "menu.h"
+
+t_config option;
+uint32_t emulator_state = 0;
+
+extern uint8_t exit_snes;
+
+static char home_path[256], save_path[256], sram_path[256], conf_path[256], rtc_path[256];
+static uint32_t controls_chosen = 0;
+
+extern SDL_Surface *sdl_screen;
+extern char GameName_emu[512];
+
+extern void SRAM_file(char* path, uint_fast8_t state);
+extern void RTC_Save(char* path, uint_fast8_t state);
+extern void SaveState(char* path, uint_fast8_t state);
+extern void SRAM_Save(char* path, uint_fast8_t state);
+
+static uint8_t selectpressed = 0;
+static uint8_t save_slot = 0;
+static const int8_t upscalers_available = 2
+#ifdef SCALE2X_UPSCALER
++1
+#endif
+;
+
+static void SaveState_Menu(uint_fast8_t load_mode, uint_fast8_t slot)
+{
+	char tmp[512];
+	snprintf(tmp, sizeof(tmp), "%s/%s_%d.sts", save_path, GameName_emu, slot);
+	SaveState(tmp,load_mode);
+}
+
+static void SRAM_Menu(uint_fast8_t load_mode)
+{
+	char tmp[512];
+	snprintf(tmp, sizeof(tmp), "%s/%s.srm", sram_path, GameName_emu);
+	SRAM_Save(tmp,load_mode);
+}
+
+static void RTC_Menu(uint_fast8_t load_mode)
+{
+	char tmp[512];
+	snprintf(tmp, sizeof(tmp), "%s/%s.rtc", rtc_path, GameName_emu);
+	RTC_Save(tmp,load_mode);
+}
+
+static void config_load()
+{
+	uint_fast8_t i;
+	char config_path[512];
+	FILE* fp;
+	snprintf(config_path, sizeof(config_path), "%s/%s.cfg", conf_path, GameName_emu);
+
+	fp = fopen(config_path, "rb");
+	if (fp)
+	{
+		fread(&option, sizeof(option), sizeof(int8_t), fp);
+		fclose(fp);
+	}
+	else
+	{
+		/* Default mapping for Horizontal */
+		option.config_buttons[0][0] = 273;
+		option.config_buttons[0][1] = 275;
+		option.config_buttons[0][2] = 274;
+		option.config_buttons[0][3] = 276;
+		
+		option.config_buttons[0][4] = 306;
+		option.config_buttons[0][5] = 308;
+		option.config_buttons[0][6] = 304;
+		option.config_buttons[0][7] = 32;
+		
+		option.config_buttons[0][8] = 9;
+		option.config_buttons[0][9] = 8;
+				
+		option.config_buttons[0][10] = 13;
+		option.config_buttons[0][11] = 27;
+		
+		option.fullscreen = 1;
+	}
+}
+
+static void config_save()
+{
+	FILE* fp;
+	char config_path[512];
+	snprintf(config_path, sizeof(config_path), "%s/%s.cfg", conf_path, GameName_emu);
+	
+	fp = fopen(config_path, "wb");
+	if (fp)
+	{
+		fwrite(&option, sizeof(option), sizeof(int8_t), fp);
+		fclose(fp);
+	}
+}
+
+static const char* Return_Text_Button(uint32_t button)
+{
+	switch(button)
+	{
+		/* UP button */
+		case 273:
+			return "DPAD UP";
+		break;
+		/* DOWN button */
+		case 274:
+			return "DPAD DOWN";
+		break;
+		/* LEFT button */
+		case 276:
+			return "DPAD LEFT";
+		break;
+		/* RIGHT button */
+		case 275:
+			return "DPAD RIGHT";
+		break;
+		/* A button */
+		case 306:
+			return "A button";
+		break;
+		/* B button */
+		case 308:
+			return "B button";
+		break;
+		/* X button */
+		case 304:
+			return "X button";
+		break;
+		/* Y button */
+		case 32:
+			return "Y button";
+		break;
+		/* L button */
+		case 9:
+			return "L button";
+		break;
+		/* R button */
+		case 8:
+			return "R button";
+		break;
+		/* Power button */
+		case 279:
+			return "L2 button";
+		break;
+		/* Brightness */
+		case 51:
+			return "R2 button";
+		break;
+		/* Volume - */
+		case 38:
+			return "Volume -";
+		break;
+		/* Volume + */
+		case 233:
+			return "Volume +";
+		break;
+		/* Start */
+		case 13:
+			return "Start button";
+		break;
+		/* Select */
+		case 1:
+			return "Select button";
+		break;
+		default:
+			return "Unknown key";
+		break;
+		case 0:
+			return "...";
+		break;
+	}	
+}
+
+static void Input_Remapping()
+{
+	SDL_Event Event;
+	char text[50];
+	uint32_t pressed = 0;
+	int32_t currentselection = 1;
+	int32_t exit_input = 0;
+	uint32_t exit_map = 0;
+	
+	while(!exit_input)
+	{
+		pressed = 0;
+		SDL_FillRect( backbuffer, NULL, 0 );
+		
+        while (SDL_PollEvent(&Event))
+        {
+            if (Event.type == SDL_KEYDOWN)
+            {
+                switch(Event.key.keysym.sym)
+                {
+                    case SDLK_UP:
+                        currentselection--;
+                        if (currentselection < 1)
+                        {
+							if (currentselection > 9) currentselection = 12;
+							else currentselection = 9;
+						}
+                        break;
+                    case SDLK_DOWN:
+                        currentselection++;
+                        if (currentselection == 10)
+                        {
+							currentselection = 1;
+						}
+                        break;
+                    case SDLK_LCTRL:
+                    case SDLK_RETURN:
+                        pressed = 1;
+					break;
+                    case SDLK_ESCAPE:
+                        option.config_buttons[controls_chosen][currentselection - 1] = 0;
+					break;
+                    case SDLK_LALT:
+                        exit_input = 1;
+					break;
+                    case SDLK_LEFT:
+						if (currentselection > 9) currentselection -= 9;
+					break;
+                    case SDLK_RIGHT:
+						if (currentselection < 10) currentselection += 9;
+					break;
+                    case SDLK_BACKSPACE:
+						controls_chosen = 1;
+					break;
+                    case SDLK_TAB:
+						controls_chosen = 0;
+					break;
+					default:
+					break;
+                }
+            }
+        }
+
+        if (pressed)
+        {
+			SDL_Delay(1);
+            switch(currentselection)
+            {
+                default:
+					exit_map = 0;
+					while( !exit_map )
+					{
+						SDL_FillRect( backbuffer, NULL, 0 );
+						print_string("Please press button for mapping", TextWhite, TextBlue, 37, 108, backbuffer->pixels);
+						bitmap_scale(0,0,320,240,sdl_screen->w,sdl_screen->h,320,0,(uint16_t* restrict)backbuffer->pixels,(uint16_t* restrict)sdl_screen->pixels);
+						
+						while (SDL_PollEvent(&Event))
+						{
+							if (Event.type == SDL_KEYDOWN)
+							{
+								if (Event.key.keysym.sym != SDLK_RCTRL)
+								{
+									option.config_buttons[controls_chosen][currentselection - 1] = Event.key.keysym.sym;
+									exit_map = 1;
+								}
+							}
+						}
+						SDL_Flip(sdl_screen);
+					}
+				break;
+            }
+        }
+        
+        if (currentselection > 12) currentselection = 12;
+
+		if (controls_chosen == 0) print_string("Player 1", TextWhite, 0, 100, 10, backbuffer->pixels);
+		else print_string("Player 2", TextWhite, 0, 100, 10, backbuffer->pixels);
+		
+		print_string("Press [A] to map to a button", TextWhite, TextBlue, 50, 210, backbuffer->pixels);
+		print_string("Press [B] to Exit", TextWhite, TextBlue, 85, 225, backbuffer->pixels);
+		
+		snprintf(text, sizeof(text), "UP   : %d\n", (option.config_buttons[controls_chosen][0]));
+		if (currentselection == 1) print_string(text, TextRed, 0, 5, 25+2, backbuffer->pixels);
+		else print_string(text, TextWhite, 0, 5, 25+2, backbuffer->pixels);
+		
+		snprintf(text, sizeof(text), "DOWN   : %d\n", (option.config_buttons[controls_chosen][1]));
+		if (currentselection == 2) print_string(text, TextRed, 0, 5, 45+2, backbuffer->pixels);
+		else print_string(text, TextWhite, 0, 5, 45+2, backbuffer->pixels);
+		
+		snprintf(text, sizeof(text), "LEFT   : %d\n", (option.config_buttons[controls_chosen][2]));
+		if (currentselection == 3) print_string(text, TextRed, 0, 5, 65+2, backbuffer->pixels);
+		else print_string(text, TextWhite, 0, 5, 65+2, backbuffer->pixels);
+		
+		snprintf(text, sizeof(text), "RIGHT   : %d\n", (option.config_buttons[controls_chosen][3]));
+		if (currentselection == 4) print_string(text, TextRed, 0, 5, 85+2, backbuffer->pixels);
+		else print_string(text, TextWhite, 0, 5, 85+2, backbuffer->pixels);
+		
+		snprintf(text, sizeof(text), "A   : %d\n", (option.config_buttons[controls_chosen][4]));
+		if (currentselection == 5) print_string(text, TextRed, 0, 5, 105+2, backbuffer->pixels);
+		else print_string(text, TextWhite, 0, 5, 105+2, backbuffer->pixels);
+		
+		snprintf(text, sizeof(text), "B   : %d\n", (option.config_buttons[controls_chosen][5]));
+		if (currentselection == 6) print_string(text, TextRed, 0, 5, 125+2, backbuffer->pixels);
+		else print_string(text, TextWhite, 0, 5, 125+2, backbuffer->pixels);
+		
+		snprintf(text, sizeof(text), "X   : %d\n", (option.config_buttons[controls_chosen][6]));
+		if (currentselection == 7) print_string(text, TextRed, 0, 5, 145+2, backbuffer->pixels);
+		else print_string(text, TextWhite, 0, 5, 145+2, backbuffer->pixels);
+		
+		snprintf(text, sizeof(text), "Y   : %d\n", (option.config_buttons[controls_chosen][7]));
+		if (currentselection == 8) print_string(text, TextRed, 0, 5, 165+2, backbuffer->pixels);
+		else print_string(text, TextWhite, 0, 5, 165+2, backbuffer->pixels);
+			
+		snprintf(text, sizeof(text), "L   : %d\n", (option.config_buttons[controls_chosen][8]));
+		if (currentselection == 9) print_string(text, TextRed, 0, 5, 185+2, backbuffer->pixels);
+		else print_string(text, TextWhite, 0, 5, 185+2, backbuffer->pixels);
+			
+		snprintf(text, sizeof(text), "R      : %d\n", (option.config_buttons[controls_chosen][9]));
+		if (currentselection == 10) print_string(text, TextRed, 0, 165, 25+2, backbuffer->pixels);
+		else print_string(text, TextWhite, 0, 165, 25+2, backbuffer->pixels);
+			
+		snprintf(text, sizeof(text), "START  : %d\n", (option.config_buttons[controls_chosen][10]));
+		if (currentselection == 11) print_string(text, TextRed, 0, 165, 45+2, backbuffer->pixels);
+		else print_string(text, TextWhite, 0, 165, 45+2, backbuffer->pixels);
+			
+		snprintf(text, sizeof(text), "SELECT : %d\n", (option.config_buttons[controls_chosen][11]));
+		if (currentselection == 12) print_string(text, TextRed, 0, 165, 65+2, backbuffer->pixels);
+		else print_string(text, TextWhite, 0, 165, 65+2, backbuffer->pixels);
+		
+		bitmap_scale(0,0,320,240,sdl_screen->w,sdl_screen->h,320,0,(uint16_t* restrict)backbuffer->pixels,(uint16_t* restrict)sdl_screen->pixels);
+		SDL_Flip(sdl_screen);
+	}
+	
+	config_save();
+}
+
+void Menu()
+{
+	char text[50];
+    int16_t pressed = 0;
+    int16_t currentselection = 1;
+    SDL_Rect dstRect;
+    SDL_Event Event;
+    
+    Set_Video_Menu();
+    
+	/* Save sram settings each time we bring up the menu */
+	SRAM_Menu(0);
+	RTC_Menu(0);
+    
+    while (((currentselection != 1) && (currentselection != 6)) || (!pressed))
+    {
+        pressed = 0;
+        
+        SDL_FillRect( backbuffer, NULL, 0 );
+
+		print_string("SNESEmu - Built on " __DATE__, TextWhite, 0, 5, 15, backbuffer->pixels);
+		
+		if (currentselection == 1) print_string("Continue", TextRed, 0, 5, 45, backbuffer->pixels);
+		else  print_string("Continue", TextWhite, 0, 5, 45, backbuffer->pixels);
+		
+		snprintf(text, sizeof(text), "Load State %d", save_slot);
+		
+		if (currentselection == 2) print_string(text, TextRed, 0, 5, 65, backbuffer->pixels);
+		else print_string(text, TextWhite, 0, 5, 65, backbuffer->pixels);
+		
+		snprintf(text, sizeof(text), "Save State %d", save_slot);
+		
+		if (currentselection == 3) print_string(text, TextRed, 0, 5, 85, backbuffer->pixels);
+		else print_string(text, TextWhite, 0, 5, 85, backbuffer->pixels);
+		
+        if (currentselection == 4)
+        {
+			switch(option.fullscreen)
+			{
+				case 0:
+					print_string("Scaling : Native", TextRed, 0, 5, 105, backbuffer->pixels);
+				break;
+				case 1:
+					print_string("Scaling : Stretched", TextRed, 0, 5, 105, backbuffer->pixels);
+				break;
+				case 2:
+					print_string("Scaling : Bilinear", TextRed, 0, 5, 105, backbuffer->pixels);
+				break;
+				case 3:
+					print_string("Scaling : EPX/Scale2x", TextRed, 0, 5, 105, backbuffer->pixels);
+				break;
+			}
+        }
+        else
+        {
+			switch(option.fullscreen)
+			{
+				case 0:
+					print_string("Scaling : Native", TextWhite, 0, 5, 105, backbuffer->pixels);
+				break;
+				case 1:
+					print_string("Scaling : Stretched", TextWhite, 0, 5, 105, backbuffer->pixels);
+				break;
+				case 2:
+					print_string("Scaling : Bilinear", TextWhite, 0, 5, 105, backbuffer->pixels);
+				break;
+				case 3:
+					print_string("Scaling : EPX/Scale2x", TextWhite, 0, 5, 105, backbuffer->pixels);
+				break;
+			}
+        }
+
+		if (currentselection == 5) print_string("Input remapping", TextRed, 0, 5, 125, backbuffer->pixels);
+		else print_string("Input remapping", TextWhite, 0, 5, 125, backbuffer->pixels);
+		
+		if (currentselection == 6) print_string("Quit", TextRed, 0, 5, 145, backbuffer->pixels);
+		else print_string("Quit", TextWhite, 0, 5, 145, backbuffer->pixels);
+
+		print_string("Libretro Fork by gameblabla", TextWhite, 0, 5, 205, backbuffer->pixels);
+		print_string("Credits: Snes9x dev team, libretro", TextWhite, 0, 5, 225, backbuffer->pixels);
+
+        while (SDL_PollEvent(&Event))
+        {
+            if (Event.type == SDL_KEYDOWN)
+            {
+                switch(Event.key.keysym.sym)
+                {
+                    case SDLK_UP:
+                        currentselection--;
+                        if (currentselection == 0)
+                            currentselection = 6;
+                        break;
+                    case SDLK_DOWN:
+                        currentselection++;
+                        if (currentselection == 7)
+                            currentselection = 1;
+                        break;
+                    case SDLK_END:
+                    case SDLK_RCTRL:
+                    case SDLK_LALT:
+						pressed = 1;
+						currentselection = 1;
+						break;
+                    case SDLK_LCTRL:
+                    case SDLK_RETURN:
+                        pressed = 1;
+                        break;
+                    case SDLK_LEFT:
+                        switch(currentselection)
+                        {
+                            case 2:
+                            case 3:
+                                if (save_slot > 0) save_slot--;
+							break;
+                            case 4:
+							option.fullscreen--;
+							if (option.fullscreen < 0)
+								option.fullscreen = upscalers_available;
+							break;
+                        }
+                        break;
+                    case SDLK_RIGHT:
+                        switch(currentselection)
+                        {
+                            case 2:
+                            case 3:
+                                save_slot++;
+								if (save_slot == 10)
+									save_slot = 9;
+							break;
+                            case 4:
+                                option.fullscreen++;
+                                if (option.fullscreen > upscalers_available)
+                                    option.fullscreen = 0;
+							break;
+                        }
+                        break;
+					default:
+					break;
+                }
+            }
+            else if (Event.type == SDL_QUIT)
+            {
+				currentselection = 6;
+				pressed = 1;
+			}
+        }
+
+        if (pressed)
+        {
+            switch(currentselection)
+            {
+				case 5:
+					Input_Remapping();
+				break;
+                case 4 :
+                    option.fullscreen++;
+                    if (option.fullscreen > upscalers_available)
+                        option.fullscreen = 0;
+                    break;
+                case 2 :
+                    SaveState_Menu(1, save_slot);
+					currentselection = 1;
+                    break;
+                case 3 :
+					SaveState_Menu(0, save_slot);
+					currentselection = 1;
+				break;
+				default:
+				break;
+            }
+        }
+
+		bitmap_scale(0,0,320,240,sdl_screen->w,sdl_screen->h,320,0,(uint16_t* restrict)backbuffer->pixels,(uint16_t* restrict)sdl_screen->pixels);
+		SDL_Flip(sdl_screen);
+    }
+    
+    SDL_FillRect(sdl_screen, NULL, 0);
+    SDL_Flip(sdl_screen);
+    #ifdef SDL_TRIPLEBUF
+    SDL_FillRect(sdl_screen, NULL, 0);
+    SDL_Flip(sdl_screen);
+    #endif
+    
+    if (currentselection == 6)
+    {
+        exit_snes = 1;
+	}
+	
+	/* Switch back to emulator core */
+	emulator_state = 0;
+	Set_Video_InGame();
+}
+
+static void Cleanup(void)
+{
+#ifdef SCALE2X_UPSCALER
+	if (scale2x_buf) SDL_FreeSurface(scale2x_buf);
+#endif
+	if (sdl_screen) SDL_FreeSurface(sdl_screen);
+	if (backbuffer) SDL_FreeSurface(backbuffer);
+
+	// Deinitialize audio and video output
+	Audio_Close();
+	
+	SDL_Quit();
+}
+
+void Init_Configuration()
+{
+	snprintf(home_path, sizeof(home_path), "%s/.snesemu", getenv("HOME"));
+	
+	snprintf(conf_path, sizeof(conf_path), "%s/conf", home_path);
+	snprintf(save_path, sizeof(save_path), "%s/sstates", home_path);
+	snprintf(sram_path, sizeof(sram_path), "%s/sram", home_path);
+	snprintf(rtc_path, sizeof(sram_path), "%s/rtc", home_path);
+	
+	/* We check first if folder does not exist. 
+	 * Let's only try to create it if so in order to decrease boot times.
+	 * */
+	
+	if (access( home_path, F_OK ) == -1)
+	{ 
+		mkdir(home_path, 0755);
+	}
+	
+	if (access( save_path, F_OK ) == -1)
+	{
+		mkdir(save_path, 0755);
+	}
+	
+	if (access( conf_path, F_OK ) == -1)
+	{
+		mkdir(conf_path, 0755);
+	}
+	
+	if (access( sram_path, F_OK ) == -1)
+	{
+		mkdir(sram_path, 0755);
+	}
+	
+	if (access( rtc_path, F_OK ) == -1)
+	{
+		mkdir(rtc_path, 0755);
+	}
+	
+	/* Load sram file if it exists */
+	SRAM_Menu(1);
+	RTC_Menu(1);
+	
+	config_load();
+}
diff --git a/shell/menu/menu.h b/shell/menu/menu.h
new file mode 100644
index 0000000..8b81ac3
--- /dev/null
+++ b/shell/menu/menu.h
@@ -0,0 +1,18 @@
+#ifndef MENU_H
+#define MENU_H
+
+#include <stdint.h>
+
+#ifndef PATH_MAX
+#define PATH_MAX 2048
+#endif
+
+#define RGB565(r,g,b) ((r << 8) | (g << 3) | (b >> 3))
+
+extern uint32_t emulator_state;
+extern uint32_t done;
+
+extern void Menu(void);
+extern void Init_Configuration(void);
+
+#endif
diff --git a/shell/other/compatibility_layer.c b/shell/other/compatibility_layer.c
new file mode 100644
index 0000000..fea850b
--- /dev/null
+++ b/shell/other/compatibility_layer.c
@@ -0,0 +1,185 @@
+#include <SDL/SDL.h>
+#include <portaudio.h>
+#include "main.h"
+#include "snes9x.h"
+#include "soundux.h"
+#include "memmap.h"
+#include "apu.h"
+#include "cheats.h"
+#include "display.h"
+#include "gfx.h"
+#include "cpuexec.h"
+#include "spc7110.h"
+#include "srtc.h"
+#include "sa1.h"
+#include "scaler.h"
+
+const char* S9xGetFilename(const char* in)
+{
+   static char filename [PATH_MAX + 1];
+   char drive [_MAX_DRIVE + 1];
+   char dir [_MAX_DIR + 1];
+   char fname [_MAX_FNAME + 1];
+   char ext [_MAX_EXT + 1];
+   _splitpath(Memory.ROMFilename, drive, dir, fname, ext);
+   _makepath(filename, drive, dir, fname, in);
+   return filename;
+}
+
+void S9xMessage(int a, int b, const char* msg)
+{
+   //printf("%s\n", msg);
+}
+
+const char* S9xGetDirectory(uint32_t dirtype) { return NULL; }
+
+void S9xDeinitDisplay(void)
+{
+#ifdef DS2_DMA
+   if (GFX.Screen_buffer)
+      AlignedFree(GFX.Screen, PtrAdj.GFXScreen);
+#elif defined(_3DS)
+   if (GFX.Screen_buffer)
+      linearFree(GFX.Screen_buffer);
+#else
+   if (GFX.Screen_buffer)
+      free(GFX.Screen_buffer);
+#endif
+   if (GFX.SubScreen_buffer)
+      free(GFX.SubScreen_buffer);
+   if (GFX.ZBuffer_buffer)
+      free(GFX.ZBuffer_buffer);
+   if (GFX.SubZBuffer_buffer)
+      free(GFX.SubZBuffer_buffer);
+
+   GFX.Screen = NULL;
+   GFX.Screen_buffer = NULL;
+   GFX.SubScreen = NULL;
+   GFX.SubScreen_buffer = NULL;
+   GFX.ZBuffer = NULL;
+   GFX.ZBuffer_buffer = NULL;
+   GFX.SubZBuffer = NULL;
+   GFX.SubZBuffer_buffer = NULL;
+}
+
+void S9xInitDisplay(void)
+{
+   int32_t h = IMAGE_HEIGHT;
+   int32_t safety = 32;
+
+   GFX.Pitch = IMAGE_WIDTH * 2;
+#ifdef DS2_DMA
+   GFX.Screen_buffer = (uint8_t *) AlignedMalloc(GFX.Pitch * h + safety, 32, &PtrAdj.GFXScreen);
+#elif defined(_3DS)
+   safety = 0x80;
+   GFX.Screen_buffer = (uint8_t *) linearMemAlign(GFX.Pitch * h + safety, 0x80);
+#else
+   GFX.Screen_buffer = (uint8_t *) malloc(GFX.Pitch * h + safety);
+#endif
+   GFX.SubScreen_buffer = (uint8_t *) malloc(GFX.Pitch * h + safety);
+   GFX.ZBuffer_buffer = (uint8_t *) malloc((GFX.Pitch >> 1) * h + safety);
+   GFX.SubZBuffer_buffer = (uint8_t *) malloc((GFX.Pitch >> 1) * h + safety);
+
+   GFX.Screen = GFX.Screen_buffer + safety;
+   GFX.SubScreen = GFX.SubScreen_buffer + safety;
+   GFX.ZBuffer = GFX.ZBuffer_buffer + safety;
+   GFX.SubZBuffer = GFX.SubZBuffer_buffer + safety;
+
+   GFX.Delta = (GFX.SubScreen - GFX.Screen) >> 1;
+}
+
+void _splitpath (const char *path, char *drive, char *dir, char *fname, char *ext)
+{
+    char *slash = strrchr ((char *) path, SLASH_CHAR);
+    char *dot   = strrchr ((char *) path, '.');
+
+    *drive = '\0';
+
+    if (dot && slash && dot < slash)
+    {
+        dot = 0;
+    }
+
+    if (!slash)
+    {
+        *dir = '\0';
+        strcpy (fname, path);
+
+        if (dot)
+        {
+            fname[dot - path] = '\0';
+            strcpy (ext, dot + 1);
+        }
+        else
+        {
+            *ext = '\0';
+        }
+    }
+    else
+    {
+        strcpy (dir, path);
+        dir[slash - path] = '\0';
+        strcpy (fname, slash + 1);
+
+        if (dot)
+        {
+            fname[(dot - slash) - 1] = '\0';
+            strcpy (ext, dot + 1);
+        }
+        else
+        {
+            *ext = '\0';
+        }
+    }
+
+    return;
+}
+
+void _makepath (char *path, const char *drive, const char *dir, const char *fname,const char *ext)
+{
+    if (dir && *dir)
+    {
+        strcpy (path, dir);
+        strcat (path, "/");
+    }
+    else
+        *path = '\0';
+
+    strcat (path, fname);
+
+    if (ext && *ext)
+    {
+        strcat (path, ".");
+        strcat (path, ext);
+    }
+
+    return;
+}
+
+
+bool S9xReadMousePosition(int32_t which1, int32_t* x, int32_t* y, uint32_t* buttons)
+{
+   (void) which1;
+   (void) x;
+   (void) y;
+   (void) buttons;
+   return false;
+}
+
+bool S9xReadSuperScopePosition(int32_t* x, int32_t* y, uint32_t* buttons)
+{
+   (void) x;
+   (void) y;
+   (void) buttons;
+   return true;
+}
+
+bool JustifierOffscreen(void)
+{
+   return false;
+}
+
+void JustifierButtons(uint32_t* justifiers)
+{
+   (void) justifiers;
+}
diff --git a/shell/scalers/scaler.c b/shell/scalers/scaler.c
new file mode 100644
index 0000000..3aeea05
--- /dev/null
+++ b/shell/scalers/scaler.c
@@ -0,0 +1,139 @@
+#include <stdio.h>

+#include <stdint.h>

+#include "scaler.h"

+

+#define AVERAGE(z, x) ((((z) & 0xF7DEF7DE) >> 1) + (((x) & 0xF7DEF7DE) >> 1))

+#define AVERAGEHI(AB) ((((AB) & 0xF7DE0000) >> 1) + (((AB) & 0xF7DE) << 15))

+#define AVERAGELO(CD) ((((CD) & 0xF7DE) >> 1) + (((CD) & 0xF7DE0000) >> 17))

+

+// Support math

+#define Half(A) (((A) >> 1) & 0x7BEF)

+#define Quarter(A) (((A) >> 2) & 0x39E7)

+// Error correction expressions to piece back the lower bits together

+#define RestHalf(A) ((A) & 0x0821)

+#define RestQuarter(A) ((A) & 0x1863)

+

+// Error correction expressions for quarters of pixels

+#define Corr1_3(A, B)     Quarter(RestQuarter(A) + (RestHalf(B) << 1) + RestQuarter(B))

+#define Corr3_1(A, B)     Quarter((RestHalf(A) << 1) + RestQuarter(A) + RestQuarter(B))

+

+// Error correction expressions for halves

+#define Corr1_1(A, B)     ((A) & (B) & 0x0821)

+

+// Quarters

+#define Weight1_3(A, B)   (Quarter(A) + Half(B) + Quarter(B) + Corr1_3(A, B))

+#define Weight3_1(A, B)   (Half(A) + Quarter(A) + Quarter(B) + Corr3_1(A, B))

+

+// Halves

+#define Weight1_1(A, B)   (Half(A) + Half(B) + Corr1_1(A, B))

+

+

+void upscale_256x240_to_320x240_bilinearish(uint32_t* restrict dst, uint32_t* restrict src, uint_fast16_t width, uint_fast16_t height)

+{

+	uint16_t* Src16 = (uint16_t*) src;

+	uint16_t* Dst16 = (uint16_t*) dst;

+	// There are 64 blocks of 4 pixels horizontally, and 239 of 1 vertically.

+	// Each block of 4x1 becomes 5x1.

+	uint32_t BlockX, BlockY;

+	uint16_t* BlockSrc;

+	uint16_t* BlockDst;

+	for (BlockY = 0; BlockY < height; BlockY++)

+	{

+		BlockSrc = Src16 + BlockY * 512 * 1;

+		BlockDst = Dst16 + BlockY * 320 * 1;

+		for (BlockX = 0; BlockX < 64; BlockX++)

+		{

+			/* Horizontally:

+			 * Before(4):

+			 * (a)(b)(c)(d)

+			 * After(5):

+			 * (a)(abbb)(bc)(cccd)(d)

+			 */

+

+			// -- Row 1 --

+			uint16_t  _1 = *(BlockSrc               );

+			*(BlockDst               ) = _1;

+			uint16_t  _2 = *(BlockSrc            + 1);

+			*(BlockDst            + 1) = Weight1_3( _1,  _2);

+			uint16_t  _3 = *(BlockSrc            + 2);

+			*(BlockDst            + 2) = Weight1_1( _2,  _3);

+			uint16_t  _4 = *(BlockSrc            + 3);

+			*(BlockDst            + 3) = Weight3_1( _3,  _4);

+			*(BlockDst            + 4) = _4;

+

+			BlockSrc += 4;

+			BlockDst += 5;

+		}

+	}

+}

+

+void upscale_256xXXX_to_320x240(uint32_t* restrict dst, uint32_t* restrict src, uint_fast16_t width, uint_fast16_t height)

+{

+    uint_fast16_t midh = 240;

+    uint_fast16_t Eh = 0;

+    uint_fast16_t source = 0;

+    uint_fast16_t dh = 0;

+    uint_fast8_t y, x;

+

+    for (y = 0; y < 240; y++)

+    {

+        source = dh * width;

+

+        for (x = 0; x < 320/10; x++)

+        {

+            register uint32_t ab, cd, ef, gh;

+

+            __builtin_prefetch(dst + 4, 1);

+            __builtin_prefetch(src + source + 4, 0);

+

+            ab = src[source] & 0xF7DEF7DE;

+            cd = src[source + 1] & 0xF7DEF7DE;

+            ef = src[source + 2] & 0xF7DEF7DE;

+            gh = src[source + 3] & 0xF7DEF7DE;

+

+            if(Eh >= midh) 

+			{

+                ab = AVERAGE(ab, src[source + width/2]) & 0xF7DEF7DE; // to prevent overflow

+                cd = AVERAGE(cd, src[source + width/2 + 1]) & 0xF7DEF7DE; // to prevent overflow

+                ef = AVERAGE(ef, src[source + width/2 + 2]) & 0xF7DEF7DE; // to prevent overflow

+                gh = AVERAGE(gh, src[source + width/2 + 3]) & 0xF7DEF7DE; // to prevent overflow

+            }

+

+            *dst++ = ab;

+            *dst++  = ((ab >> 17) + ((cd & 0xFFFF) >> 1)) + (cd << 16);

+            *dst++  = (cd >> 16) + (ef << 16);

+            *dst++  = (ef >> 16) + (((ef & 0xFFFF0000) >> 1) + ((gh & 0xFFFF) << 15));

+            *dst++  = gh;

+

+            source += 4;

+

+        }

+        Eh += height; if(Eh >= 240) { Eh -= 240; dh++; }

+    }

+}

+

+

+/* alekmaul's scaler taken from mame4all */

+void bitmap_scale(uint32_t startx, uint32_t starty, uint32_t viswidth, uint32_t visheight, uint32_t newwidth, uint32_t newheight,uint32_t pitchsrc,uint32_t pitchdest, uint16_t* restrict src, uint16_t* restrict dst)

+{

+    uint32_t W,H,ix,iy,x,y;

+    x=startx<<16;

+    y=starty<<16;

+    W=newwidth;

+    H=newheight;

+    ix=(viswidth<<16)/W;

+    iy=(visheight<<16)/H;

+

+    do 

+    {

+        uint16_t* restrict buffer_mem=&src[(y>>16)*pitchsrc];

+        W=newwidth; x=startx<<16;

+        do 

+        {

+            *dst++=buffer_mem[x>>16];

+            x+=ix;

+        } while (--W);

+        dst+=pitchdest;

+        y+=iy;

+	} while (--H);

+}

diff --git a/shell/scalers/scaler.h b/shell/scalers/scaler.h
new file mode 100644
index 0000000..f220800
--- /dev/null
+++ b/shell/scalers/scaler.h
@@ -0,0 +1,11 @@
+#ifndef SCALER_H

+#define SCALER_H

+

+#include <stdint.h>

+

+/* Generic */

+extern void bitmap_scale(uint32_t startx, uint32_t starty, uint32_t viswidth, uint32_t visheight, uint32_t newwidth, uint32_t newheight,uint32_t pitchsrc,uint32_t pitchdest, uint16_t* restrict src, uint16_t* restrict dst);

+extern void upscale_256xXXX_to_320x240(uint32_t* restrict dst, uint32_t* restrict src, uint_fast16_t width, uint_fast16_t height);

+extern void upscale_256x240_to_320x240_bilinearish(uint32_t* restrict dst, uint32_t* restrict src, uint_fast16_t width, uint_fast16_t height);

+

+#endif

diff --git a/shell/video/retrostone/video_blit.c b/shell/video/retrostone/video_blit.c
new file mode 100644
index 0000000..be84dd1
--- /dev/null
+++ b/shell/video/retrostone/video_blit.c
@@ -0,0 +1,155 @@
+/* Cygne
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2002 Dox dox@space.pl
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+ 
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <SDL/SDL.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include "mednafen.h"
+#include "mempatcher.h"
+#include "wswan/gfx.h"
+#include "wswan/wswan-memory.h"
+#include "wswan/sound.h"
+#include "wswan/interrupt.h"
+#include "wswan/v30mz.h"
+#include "wswan/rtc.h"
+#include "wswan/gfx.h"
+#include "wswan/eeprom.h"
+
+#include "video_blit.h"
+#include "scaler.h"
+#include "config.h"
+
+SDL_Surface *sdl_screen, *backbuffer, *wswan_vs, *wswan_vs_rot;
+
+uint32_t width_of_surface;
+uint32_t* Draw_to_Virtual_Screen;
+
+void Init_Video()
+{
+	SDL_Init( SDL_INIT_VIDEO );
+	
+	SDL_ShowCursor(0);
+	
+	sdl_screen = SDL_SetVideoMode(0, 0, 16, SDL_HWSURFACE);
+	
+	backbuffer = SDL_CreateRGBSurface(SDL_SWSURFACE, HOST_WIDTH_RESOLUTION, HOST_HEIGHT_RESOLUTION, 16, 0,0,0,0);
+	
+	wswan_vs = SDL_CreateRGBSurface(SDL_SWSURFACE, INTERNAL_WSWAN_WIDTH, INTERNAL_WSWAN_HEIGHT, 16, 0,0,0,0);
+	
+	wswan_vs_rot = SDL_CreateRGBSurface(SDL_SWSURFACE, INTERNAL_WSWAN_HEIGHT, INTERNAL_WSWAN_WIDTH, 16, 0,0,0,0);
+
+	Set_Video_InGame();
+}
+
+void Set_Video_Menu()
+{
+	if (sdl_screen->w != HOST_WIDTH_RESOLUTION)
+	{
+		memcpy(wswan_vs->pixels, sdl_screen->pixels, (INTERNAL_WSWAN_WIDTH * INTERNAL_WSWAN_HEIGHT)*2);
+		sdl_screen = SDL_SetVideoMode(HOST_WIDTH_RESOLUTION, HOST_HEIGHT_RESOLUTION, 16, SDL_HWSURFACE);
+	}
+}
+
+void Set_Video_InGame()
+{
+	if (sdl_screen->w != HOST_WIDTH_RESOLUTION) sdl_screen = SDL_SetVideoMode(HOST_WIDTH_RESOLUTION, HOST_HEIGHT_RESOLUTION, 16, SDL_HWSURFACE);
+	Draw_to_Virtual_Screen = wswan_vs->pixels;
+	width_of_surface = INTERNAL_WSWAN_WIDTH;
+}
+
+void Video_Close()
+{
+	if (sdl_screen) SDL_FreeSurface(sdl_screen);
+	if (backbuffer) SDL_FreeSurface(backbuffer);
+	if (wswan_vs) SDL_FreeSurface(wswan_vs);
+	if (wswan_vs_rot) SDL_FreeSurface(wswan_vs_rot);
+	SDL_Quit();
+}
+
+void Update_Video_Menu()
+{
+	SDL_Flip(sdl_screen);
+}
+
+static void rotate_90_ccw(uint16_t* restrict dst, uint16_t* restrict src)
+{
+    int32_t h = 224, w = 144;
+    src += w * h - 1;
+    for (int32_t col = w - 1; col >= 0; --col)
+    {
+        uint16_t *outcol = dst + col;
+        for(int32_t row = 0; row < h; ++row, outcol += w)
+        {
+            *outcol = *src--;
+		}
+    }
+}
+
+void Update_Video_Ingame()
+{
+	uint32_t internal_width, internal_height, keep_aspect_width, keep_aspect_height;
+	uint16_t* restrict source_graph;
+	
+	if ((Wswan_IsVertical() == 1 && option.orientation_settings != 2) || option.orientation_settings == 1)
+	{
+		rotate_90_ccw((uint16_t* restrict)wswan_vs_rot->pixels, (uint16_t* restrict)wswan_vs->pixels);
+		internal_width = INTERNAL_WSWAN_HEIGHT;
+		internal_height = INTERNAL_WSWAN_WIDTH;
+		source_graph = (uint16_t* restrict)wswan_vs_rot->pixels;
+		keep_aspect_width =  ((HOST_HEIGHT_RESOLUTION / INTERNAL_WSWAN_HEIGHT) * INTERNAL_WSWAN_WIDTH) / 2;
+		if (keep_aspect_width > HOST_WIDTH_RESOLUTION) keep_aspect_width -= HOST_WIDTH_RESOLUTION/2;
+		keep_aspect_height = HOST_HEIGHT_RESOLUTION;
+	}
+	else
+	{
+		internal_width = INTERNAL_WSWAN_WIDTH;
+		internal_height = INTERNAL_WSWAN_HEIGHT;
+		source_graph = (uint16_t* restrict)wswan_vs->pixels;
+		keep_aspect_width = HOST_WIDTH_RESOLUTION;
+		keep_aspect_height = ((HOST_WIDTH_RESOLUTION / INTERNAL_WSWAN_WIDTH) * INTERNAL_WSWAN_HEIGHT);
+		if (keep_aspect_height > HOST_HEIGHT_RESOLUTION) keep_aspect_height -= HOST_HEIGHT_RESOLUTION/4;
+	}
+	
+	if (SDL_LockSurface(sdl_screen) == 0)
+	{
+		switch(option.fullscreen) 
+		{
+			// Fullscreen
+			case 0:
+				bitmap_scale(0,0,internal_width,internal_height,internal_width*2,internal_height*2,internal_width, HOST_WIDTH_RESOLUTION - (internal_width*2),(uint16_t* restrict)source_graph,(uint16_t* restrict)sdl_screen->pixels+(HOST_WIDTH_RESOLUTION-(internal_width*2))/2+(HOST_HEIGHT_RESOLUTION-(internal_height*2))/2*HOST_WIDTH_RESOLUTION);
+			break;
+			// Fullscreen
+			case 1:
+				bitmap_scale(0, 0, internal_width, internal_height, HOST_WIDTH_RESOLUTION, HOST_HEIGHT_RESOLUTION, internal_width, 0, (uint16_t* restrict)source_graph, (uint16_t* restrict)sdl_screen->pixels);
+			break;
+			case 2:
+				bitmap_scale(0,0,internal_width,internal_height,keep_aspect_width,keep_aspect_height,internal_width, HOST_WIDTH_RESOLUTION - keep_aspect_width,(uint16_t* restrict)source_graph,(uint16_t* restrict)sdl_screen->pixels+(HOST_WIDTH_RESOLUTION-keep_aspect_width)/2+(HOST_HEIGHT_RESOLUTION-keep_aspect_height)/2*HOST_WIDTH_RESOLUTION);
+			break;
+			// Hqx
+			case 3:
+			break;
+		}
+		SDL_UnlockSurface(sdl_screen);	
+	}
+	SDL_Flip(sdl_screen);
+}
diff --git a/shell/video/retrostone/video_blit.h b/shell/video/retrostone/video_blit.h
new file mode 100644
index 0000000..8e1c81c
--- /dev/null
+++ b/shell/video/retrostone/video_blit.h
@@ -0,0 +1,24 @@
+#ifndef VIDEO_BLIT_H
+#define VIDEO_BLIT_H
+
+#include <SDL/SDL.h>
+
+#define HOST_WIDTH_RESOLUTION (sdl_screen->w)
+#define HOST_HEIGHT_RESOLUTION (sdl_screen->h)
+
+#define INTERNAL_WSWAN_WIDTH 224
+#define INTERNAL_WSWAN_HEIGHT 144
+
+extern SDL_Surface *screen, *wswan_vs, *backbuffer;
+
+extern uint32_t width_of_surface;
+extern uint32_t* Draw_to_Virtual_Screen;
+
+void Init_Video();
+void Set_Video_Menu();
+void Set_Video_InGame();
+void Close_Video();
+void Update_Video_Menu();
+void Update_Video_Ingame();
+
+#endif
diff --git a/shell/video/sdl/video_blit.c b/shell/video/sdl/video_blit.c
new file mode 100644
index 0000000..9778039
--- /dev/null
+++ b/shell/video/sdl/video_blit.c
@@ -0,0 +1,132 @@
+/* Cygne
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2002 Dox dox@space.pl
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+ 
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <SDL/SDL.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include "main.h"
+#include "snes9x.h"
+#include "soundux.h"
+#include "memmap.h"
+#include "apu.h"
+#include "cheats.h"
+#include "display.h"
+#include "gfx.h"
+#include "cpuexec.h"
+#include "spc7110.h"
+#include "srtc.h"
+#include "sa1.h"
+#include "scaler.h"
+
+#include "video_blit.h"
+#include "scaler.h"
+#include "config.h"
+
+
+SDL_Surface *sdl_screen, *backbuffer;
+
+uint32_t width_of_surface;
+uint32_t* Draw_to_Virtual_Screen;
+
+void Init_Video()
+{
+	SDL_Init( SDL_INIT_VIDEO );
+	
+	SDL_ShowCursor(0);
+	
+	sdl_screen = SDL_SetVideoMode(HOST_WIDTH_RESOLUTION, HOST_HEIGHT_RESOLUTION, 16, SDL_HWSURFACE);
+	
+	backbuffer = SDL_CreateRGBSurface(SDL_SWSURFACE, HOST_WIDTH_RESOLUTION, HOST_HEIGHT_RESOLUTION, 16, 0,0,0,0);
+
+	Set_Video_InGame();
+}
+
+void Set_Video_Menu()
+{
+	/*if (sdl_screen->w != HOST_WIDTH_RESOLUTION)
+	{
+		sdl_screen = SDL_SetVideoMode(HOST_WIDTH_RESOLUTION, HOST_HEIGHT_RESOLUTION, 16, SDL_HWSURFACE);
+	}*/
+}
+
+void Set_Video_InGame()
+{
+	/*switch(option.fullscreen) 
+	{
+		// Native
+		#ifdef SUPPORT_NATIVE_RESOLUTION
+        case 0:
+			if (sdl_screen->w != INTERNAL_WSWAN_WIDTH) sdl_screen = SDL_SetVideoMode(IPPU.RenderedScreenWidth, IPPU.RenderedScreenHeight, 16, SDL_HWSURFACE);
+			Draw_to_Virtual_Screen = sdl_screen->pixels;
+			width_of_surface = sdl_screen->w;
+        break;
+        #endif
+        default:
+			if (sdl_screen->w != HOST_WIDTH_RESOLUTION) sdl_screen = SDL_SetVideoMode(HOST_WIDTH_RESOLUTION, HOST_HEIGHT_RESOLUTION, 16, SDL_HWSURFACE);
+			Draw_to_Virtual_Screen = wswan_vs->pixels;
+			width_of_surface = INTERNAL_WSWAN_WIDTH;
+        break;
+    }*/
+}
+
+void Video_Close()
+{
+	if (sdl_screen) SDL_FreeSurface(sdl_screen);
+	if (backbuffer) SDL_FreeSurface(backbuffer);
+	SDL_Quit();
+}
+
+void Update_Video_Menu()
+{
+	SDL_Flip(sdl_screen);
+}
+
+void Update_Video_Ingame()
+{
+	uint32_t *s, *d;
+	uint32_t h, w;
+	uint8_t PAL = !!(Memory.FillRAM[0x2133] & 4);
+	
+	SDL_LockSurface(sdl_screen);
+	
+	switch(option.fullscreen)
+	{
+		case 0:
+		s = (uint32_t*) GFX.Screen;
+		d = (uint32_t*) sdl_screen->pixels + ((sdl_screen->w - IPPU.RenderedScreenWidth)/4 + (sdl_screen->h - IPPU.RenderedScreenHeight) * 160) - (PAL ? 0 : 4*320);
+		for(uint8_t y = 0; y < IPPU.RenderedScreenHeight; y++, s += IPPU.RenderedScreenWidth, d += sdl_screen->w/2) memmove(d, s, IPPU.RenderedScreenWidth * 2);
+
+		break;
+		case 1:
+			upscale_256xXXX_to_320x240((uint32_t*) sdl_screen->pixels, (uint32_t*) GFX.Screen, SNES_WIDTH, PAL ? 240 : 224);
+		break;
+		case 2:
+			if (IPPU.RenderedScreenHeight == 240) upscale_256x240_to_320x240_bilinearish((uint32_t*) sdl_screen->pixels, (uint32_t*) GFX.Screen, SNES_WIDTH, 239);
+			else upscale_256x240_to_320x240_bilinearish((uint32_t*) sdl_screen->pixels + (160*8), (uint32_t*) GFX.Screen, SNES_WIDTH, 224);
+		break;
+	}
+	//bitmap_scale(0, 0, IPPU.RenderedScreenWidth, IPPU.RenderedScreenHeight, sdl_screen->w, sdl_screen->h, SNES_WIDTH*2, 0, GFX.Screen, sdl_screen->pixels);
+	
+	SDL_UnlockSurface(sdl_screen);	
+	SDL_Flip(sdl_screen);
+}
diff --git a/shell/video/sdl/video_blit.h b/shell/video/sdl/video_blit.h
new file mode 100644
index 0000000..ea28ba9
--- /dev/null
+++ b/shell/video/sdl/video_blit.h
@@ -0,0 +1,24 @@
+#ifndef VIDEO_BLIT_H
+#define VIDEO_BLIT_H
+
+#include <SDL/SDL.h>
+
+#define HOST_WIDTH_RESOLUTION 320
+#define HOST_HEIGHT_RESOLUTION 240
+
+#define INTERNAL_SNES_WIDTH_NTSC 256
+#define INTERNAL_SNES_HEIGHT_NTSC 224
+
+extern SDL_Surface *screen, *backbuffer;
+
+extern uint32_t width_of_surface;
+extern uint32_t* Draw_to_Virtual_Screen;
+
+void Init_Video();
+void Set_Video_Menu();
+void Set_Video_InGame();
+void Video_Close();
+void Update_Video_Menu();
+void Update_Video_Ingame();
+
+#endif