diff --git a/bsnes/Makefile b/bsnes/Makefile
index 00110304..dbd165fc 100755
--- a/bsnes/Makefile
+++ b/bsnes/Makefile
@@ -11,7 +11,7 @@ ui := ui
 # compiler
 c       := $(compiler) -std=gnu99
 cpp     := $(subst cc,++,$(compiler)) -std=gnu++0x
-flags   := -I. -O3 -fomit-frame-pointer
+flags   := -I. -march=native -O3 -fomit-frame-pointer
 link    :=
 objects := libco
 
diff --git a/bsnes/base/base.hpp b/bsnes/base/base.hpp
index be8b356d..d3e33cd6 100755
--- a/bsnes/base/base.hpp
+++ b/bsnes/base/base.hpp
@@ -1,7 +1,7 @@
 #ifndef BASE_HPP
 #define BASE_HPP
 
-const char Version[] = "086.02";
+const char Version[] = "086.03";
 
 #include <nall/platform.hpp>
 #include <nall/algorithm.hpp>
diff --git a/bsnes/snes/cartridge/cartridge.cpp b/bsnes/snes/cartridge/cartridge.cpp
index 5187732d..fdfff8a0 100755
--- a/bsnes/snes/cartridge/cartridge.cpp
+++ b/bsnes/snes/cartridge/cartridge.cpp
@@ -34,7 +34,7 @@ void Cartridge::load(Mode cartridge_mode, const char *markup) {
   nvram.reset();
 
   parse_markup(markup);
-  print(markup, "\n\n");
+//print(markup, "\n\n");
 
   if(ram_size > 0) {
     ram.map(allocate<uint8>(ram_size, 0xff), ram_size);
diff --git a/bsnes/snes/ppu/background/background.cpp b/bsnes/snes/ppu/background/background.cpp
index a3628e34..d989323b 100755
--- a/bsnes/snes/ppu/background/background.cpp
+++ b/bsnes/snes/ppu/background/background.cpp
@@ -127,19 +127,18 @@ void PPU::Background::get_tile() {
   if(mirror_y) voffset ^= 7;
   offset = (character << (4 + color_depth)) + ((voffset & 7) << 1);
 
-  if(regs.mode >= Mode::BPP2) {
-    data[0] = ppu.vram[offset +  0];
-    data[1] = ppu.vram[offset +  1];
-  }
-  if(regs.mode >= Mode::BPP4) {
-    data[2] = ppu.vram[offset + 16];
-    data[3] = ppu.vram[offset + 17];
-  }
-  if(regs.mode >= Mode::BPP8) {
-    data[4] = ppu.vram[offset + 32];
-    data[5] = ppu.vram[offset + 33];
-    data[6] = ppu.vram[offset + 48];
+  switch(regs.mode) {
+  case Mode::BPP8:
     data[7] = ppu.vram[offset + 49];
+    data[6] = ppu.vram[offset + 48];
+    data[5] = ppu.vram[offset + 33];
+    data[4] = ppu.vram[offset + 32];
+  case Mode::BPP4:
+    data[3] = ppu.vram[offset + 17];
+    data[2] = ppu.vram[offset + 16];
+  case Mode::BPP2:
+    data[1] = ppu.vram[offset +  1];
+    data[0] = ppu.vram[offset +  0];
   }
 
   if(mirror_x) for(unsigned n = 0; n < 8; n++) {
@@ -160,7 +159,6 @@ void PPU::Background::run(bool screen) {
     if(hires == false) return;
   }
 
-  if(regs.main_enable == false && regs.sub_enable == false) return;
   if(regs.mode == Mode::Inactive) return;
   if(regs.mode == Mode::Mode7) return run_mode7();
 
@@ -186,20 +184,21 @@ void PPU::Background::run(bool screen) {
 
 unsigned PPU::Background::get_tile_color() {
   unsigned color = 0;
-  if(regs.mode >= Mode::BPP2) {
-    color += (data[0] & 0x80) ? 0x01 : 0; data[0] <<= 1;
-    color += (data[1] & 0x80) ? 0x02 : 0; data[1] <<= 1;
-  }
-  if(regs.mode >= Mode::BPP4) {
-    color += (data[2] & 0x80) ? 0x04 : 0; data[2] <<= 1;
-    color += (data[3] & 0x80) ? 0x08 : 0; data[3] <<= 1;
-  }
-  if(regs.mode >= Mode::BPP8) {
-    color += (data[4] & 0x80) ? 0x10 : 0; data[4] <<= 1;
-    color += (data[5] & 0x80) ? 0x20 : 0; data[5] <<= 1;
-    color += (data[6] & 0x80) ? 0x40 : 0; data[6] <<= 1;
-    color += (data[7] & 0x80) ? 0x80 : 0; data[7] <<= 1;
+
+  switch(regs.mode) {
+  case Mode::BPP8:
+    color += (data[7] >> 0) & 0x80; data[7] <<= 1;
+    color += (data[6] >> 1) & 0x40; data[6] <<= 1;
+    color += (data[5] >> 2) & 0x20; data[5] <<= 1;
+    color += (data[4] >> 3) & 0x10; data[4] <<= 1;
+  case Mode::BPP4:
+    color += (data[3] >> 4) & 0x08; data[3] <<= 1;
+    color += (data[2] >> 5) & 0x04; data[2] <<= 1;
+  case Mode::BPP2:
+    color += (data[1] >> 6) & 0x02; data[1] <<= 1;
+    color += (data[0] >> 7) & 0x01; data[0] <<= 1;
   }
+
   return color;
 }
 
diff --git a/bsnes/snes/ppu/ppu.cpp b/bsnes/snes/ppu/ppu.cpp
index 9117090a..34fde244 100755
--- a/bsnes/snes/ppu/ppu.cpp
+++ b/bsnes/snes/ppu/ppu.cpp
@@ -33,7 +33,7 @@ void PPU::enter() {
     }
 
     scanline();
-    add_clocks(60);
+    add_clocks(68);
     bg1.begin();
     bg2.begin();
     bg3.begin();
@@ -59,13 +59,13 @@ void PPU::enter() {
         add_clocks(2);
       }
 
-      add_clocks(22);
+      add_clocks(14);
       sprite.tilefetch();
     } else {
-      add_clocks(1052 + 22 + 136);
+      add_clocks(1052 + 14 + 136);
     }
 
-    add_clocks(lineclocks() - 60 - 1052 - 22 - 136);
+    add_clocks(lineclocks() - 68 - 1052 - 14 - 136);
   }
 }
 
diff --git a/bsnes/ui/interface/gameboy/gameboy.cpp b/bsnes/ui/interface/gameboy/gameboy.cpp
index 8ee13ae6..0fc8c4f2 100755
--- a/bsnes/ui/interface/gameboy/gameboy.cpp
+++ b/bsnes/ui/interface/gameboy/gameboy.cpp
@@ -8,6 +8,8 @@ bool InterfaceGameBoy::cartridgeLoaded() {
 }
 
 bool InterfaceGameBoy::loadCartridge(GameBoy::System::Revision revision, const string &filename) {
+  interface->unloadCartridge();
+
   uint8_t *data;
   unsigned size;
 
@@ -19,7 +21,6 @@ bool InterfaceGameBoy::loadCartridge(GameBoy::System::Revision revision, const s
     interface->base = { false, nall::basename(filename) };
   }
 
-  interface->unloadCartridge();
   interface->game = interface->base;
   interface->cartridgeTitle = interface->base.title();
   interface->applyPatch(interface->base, data, size);
diff --git a/bsnes/ui/interface/nes/nes.cpp b/bsnes/ui/interface/nes/nes.cpp
index 1120e593..5147c9e7 100755
--- a/bsnes/ui/interface/nes/nes.cpp
+++ b/bsnes/ui/interface/nes/nes.cpp
@@ -23,6 +23,8 @@ bool InterfaceNES::cartridgeLoaded() {
 }
 
 bool InterfaceNES::loadCartridge(const string &filename) {
+  interface->unloadCartridge();
+
   uint8_t *data;
   unsigned size;
 
@@ -47,7 +49,6 @@ bool InterfaceNES::loadCartridge(const string &filename) {
     interface->base = { false, nall::basename(filename) };
   }
 
-  interface->unloadCartridge();
   interface->game = interface->base;
   interface->cartridgeTitle = interface->base.title();
   interface->applyPatch(interface->base, data, size);
diff --git a/bsnes/ui/interface/snes/snes.cpp b/bsnes/ui/interface/snes/snes.cpp
index 6b5e3a69..1c342083 100755
--- a/bsnes/ui/interface/snes/snes.cpp
+++ b/bsnes/ui/interface/snes/snes.cpp
@@ -49,11 +49,12 @@ bool InterfaceSNES::loadCartridge(const string &filename, CartridgePath &cartrid
 }
 
 bool InterfaceSNES::loadCartridge(string basename) {
+  interface->unloadCartridge();
+
   uint8_t *data;
   unsigned size;
   if(loadCartridge(basename, interface->base, data, size) == false) return false;
 
-  interface->unloadCartridge();
   interface->game = interface->base;
   interface->cartridgeTitle = interface->base.title();
 
@@ -74,12 +75,13 @@ bool InterfaceSNES::loadCartridge(string basename) {
 }
 
 bool InterfaceSNES::loadSatellaviewSlottedCartridge(string basename, string slotname) {
+  interface->unloadCartridge();
+
   uint8_t *data[2];
   unsigned size[2];
   if(loadCartridge(basename, interface->base, data[0], size[0]) == false) return false;
   loadCartridge(slotname, interface->slot[0], data[1], size[1]);
 
-  interface->unloadCartridge();
   interface->game = !data[1] ? interface->base : interface->slot[0];  //TODO: subfolder for folders; concatenation for files
   interface->cartridgeTitle = interface->base.title();
   if(data[1]) interface->cartridgeTitle.append(" + ", interface->slot[0].title());
@@ -103,12 +105,13 @@ bool InterfaceSNES::loadSatellaviewSlottedCartridge(string basename, string slot
 }
 
 bool InterfaceSNES::loadSatellaviewCartridge(string basename, string slotname) {
+  interface->unloadCartridge();
+
   uint8_t *data[2];
   unsigned size[2];
   if(loadCartridge(basename, interface->base, data[0], size[0]) == false) return false;
   loadCartridge(slotname, interface->slot[0], data[1], size[1]);
 
-  interface->unloadCartridge();
   interface->game = !data[1] ? interface->base : interface->slot[0];
   interface->cartridgeTitle = interface->base.title();
   if(data[1]) interface->cartridgeTitle = interface->slot[0].title();
@@ -132,13 +135,14 @@ bool InterfaceSNES::loadSatellaviewCartridge(string basename, string slotname) {
 }
 
 bool InterfaceSNES::loadSufamiTurboCartridge(string basename, string slotAname, string slotBname) {
+  interface->unloadCartridge();
+
   uint8_t *data[3];
   unsigned size[3];
   if(loadCartridge(basename, interface->base, data[0], size[0]) == false) return false;
   loadCartridge(slotAname, interface->slot[0], data[1], size[1]);
   loadCartridge(slotBname, interface->slot[1], data[2], size[2]);
 
-  interface->unloadCartridge();
   interface->game = !data[1] ? interface->base : interface->slot[0];  //TODO: subfolder for folders; concatenation for files
   interface->cartridgeTitle = interface->base.title();
   if( data[1] && !data[2]) interface->cartridgeTitle = interface->slot[0].title();
@@ -168,12 +172,13 @@ bool InterfaceSNES::loadSufamiTurboCartridge(string basename, string slotAname,
 }
 
 bool InterfaceSNES::loadSuperGameBoyCartridge(string basename, string slotname) {
+  interface->unloadCartridge();
+
   uint8_t *data[2];
   unsigned size[2];
   if(loadCartridge(basename, interface->base, data[0], size[0]) == false) return false;
   loadCartridge(slotname, interface->slot[0], data[1], size[1]);
 
-  interface->unloadCartridge();
   interface->game = !data[1] ? interface->base : interface->slot[0];
   interface->cartridgeTitle = interface->base.title();
   if(data[1]) interface->cartridgeTitle = interface->slot[0].title();