diff --git a/snes/alt/cpu/memory.cpp b/snes/alt/cpu/memory.cpp
index fc39962..fed9870 100644
--- a/snes/alt/cpu/memory.cpp
+++ b/snes/alt/cpu/memory.cpp
@@ -5,7 +5,7 @@ uint8 CPU::pio() {
 }
 
 bool CPU::joylatch() {
-  return 0;
+  return status.joypad_strobe_latch;
 }
 
 bool CPU::interrupt_pending() {
diff --git a/snes/alt/ppu-compatibility/render/mode7.cpp b/snes/alt/ppu-compatibility/render/mode7.cpp
index b233efc..dc4d747 100644
--- a/snes/alt/ppu-compatibility/render/mode7.cpp
+++ b/snes/alt/ppu-compatibility/render/mode7.cpp
@@ -75,7 +75,7 @@ void PPU::render_line_mode7(uint8 pri0_pos, uint8 pri1_pos) {
         palette = memory::vram[(((tile << 6) + ((py & 7) << 3) + (px & 7)) << 1) + 1];
       } break;
       case 2: {  //palette color 0 outside of screen area
-        if(px < 0 || px > 1023 || py < 0 || py > 1023) {
+        if((px | py) & ~1023) {
           palette = 0;
         } else {
           px &= 1023;
@@ -87,7 +87,7 @@ void PPU::render_line_mode7(uint8 pri0_pos, uint8 pri1_pos) {
         }
       } break;
       case 3: {  //character 0 repetition outside of screen area
-        if(px < 0 || px > 1023 || py < 0 || py > 1023) {
+        if((px | py) & ~1023) {
           tile = 0;
         } else {
           px &= 1023;
diff --git a/snes/alt/ppu-performance/background/background.cpp b/snes/alt/ppu-performance/background/background.cpp
index 41603aa..9eb1f54 100644
--- a/snes/alt/ppu-performance/background/background.cpp
+++ b/snes/alt/ppu-performance/background/background.cpp
@@ -43,10 +43,10 @@ void PPU::Background::offset_per_tile(unsigned x, unsigned y, unsigned &hoffset,
 void PPU::Background::scanline() {
   if(self.vcounter() == 1) {
     mosaic_vcounter = regs.mosaic + 1;
-    y = 1;
+    mosaic_voffset = 1;
   } else if(--mosaic_vcounter == 0) {
     mosaic_vcounter = regs.mosaic + 1;
-    y += regs.mosaic + 1;
+    mosaic_voffset += regs.mosaic + 1;
   }
   if(self.regs.display_disable) return;
 
@@ -93,7 +93,7 @@ void PPU::Background::render() {
   hscroll = regs.hoffset;
   vscroll = regs.voffset;
 
-  unsigned y = Background::y;
+  unsigned y = (regs.mosaic == 0 ? self.vcounter() : mosaic_voffset);
   if(hires) {
     hscroll <<= 1;
     if(self.regs.interlace) y = (y << 1) + self.field();
diff --git a/snes/alt/ppu-performance/background/background.hpp b/snes/alt/ppu-performance/background/background.hpp
index b136738..38121a4 100644
--- a/snes/alt/ppu-performance/background/background.hpp
+++ b/snes/alt/ppu-performance/background/background.hpp
@@ -31,7 +31,6 @@ struct Background {
   const unsigned id;
   unsigned opt_valid_bit;
 
-  unsigned y;
   bool hires;
   signed width;
 
@@ -48,6 +47,7 @@ struct Background {
   unsigned vscroll;
 
   unsigned mosaic_vcounter;
+  unsigned mosaic_voffset;
 
   LayerWindow window;
 
diff --git a/snes/alt/ppu-performance/background/mode7.cpp b/snes/alt/ppu-performance/background/mode7.cpp
index 026c4da..0f3c09c 100644
--- a/snes/alt/ppu-performance/background/mode7.cpp
+++ b/snes/alt/ppu-performance/background/mode7.cpp
@@ -49,7 +49,7 @@ void PPU::Background::render_mode7() {
       }
 
       case 2: {
-        if(px < 0 || px > 1023 || py < 0 || py > 1023) {
+        if((px | py) & ~1023) {
           palette = 0;
         } else {
           px &= 1023;
@@ -63,7 +63,7 @@ void PPU::Background::render_mode7() {
       }
 
       case 3: {
-        if(px < 0 || px > 1023 || py < 0 || py > 1023) {
+        if((px | py) & ~1023) {
           tile = 0;
         } else {
           px &= 1023;
diff --git a/snes/alt/ppu-performance/mmio/mmio.cpp b/snes/alt/ppu-performance/mmio/mmio.cpp
index 4a796c5..ec0b689 100644
--- a/snes/alt/ppu-performance/mmio/mmio.cpp
+++ b/snes/alt/ppu-performance/mmio/mmio.cpp
@@ -283,7 +283,7 @@ void PPU::mmio_write(unsigned addr, uint8 data) {
 
   switch(addr & 0xffff) {
     case 0x2100: {  //INIDISP
-      if(regs.display_disable && vcounter() == display.height) oam.address_reset();
+      if(regs.display_disable && cpu.vcounter() == display.height) oam.address_reset();
       regs.display_disable = data & 0x80;
       regs.display_brightness = data & 0x0f;
       return;
diff --git a/snes/alt/ppu-performance/serialization.cpp b/snes/alt/ppu-performance/serialization.cpp
index 90b182c..063f27e 100644
--- a/snes/alt/ppu-performance/serialization.cpp
+++ b/snes/alt/ppu-performance/serialization.cpp
@@ -115,7 +115,6 @@ void PPU::Background::serialize(serializer &s) {
   s.integer(regs.main_enable);
   s.integer(regs.sub_enable);
 
-  s.integer(y);
   s.integer(hires);
   s.integer(width);
 
@@ -132,6 +131,7 @@ void PPU::Background::serialize(serializer &s) {
   s.integer(vscroll);
 
   s.integer(mosaic_vcounter);
+  s.integer(mosaic_voffset);
 
   window.serialize(s);
 }
diff --git a/snes/chip/dsp1/dsp1emu.cpp b/snes/chip/dsp1/dsp1emu.cpp
index f46f929..d161c5e 100644
--- a/snes/chip/dsp1/dsp1emu.cpp
+++ b/snes/chip/dsp1/dsp1emu.cpp
@@ -17,9 +17,11 @@ Dsp1::Dsp1()
 uint8 Dsp1::getSr()
 {
    mSrLowByteAccess = ~mSrLowByteAccess;
-   if (mSrLowByteAccess)
-      return 0;
-   else
+//Overload: only high 8-bits are accessible externally
+//this is required for "Ace wo Nerae!"
+//   if (mSrLowByteAccess)
+//      return 0;
+//   else
       return mSr;
 }
 
diff --git a/snes/cpu/cpu.hpp b/snes/cpu/cpu.hpp
index 4389d38..e41b50b 100644
--- a/snes/cpu/cpu.hpp
+++ b/snes/cpu/cpu.hpp
@@ -100,8 +100,8 @@ private:
     uint8 wrdivb;
 
     //$4207-$420a
-    uint10 hirq_pos;
-    uint10 virq_pos;
+    uint9 hirq_pos;
+    uint9 virq_pos;
 
     //$420d
     unsigned rom_speed;
diff --git a/snes/libsnes/libsnes.cpp b/snes/libsnes/libsnes.cpp
index 359c8d4..5160600 100644
--- a/snes/libsnes/libsnes.cpp
+++ b/snes/libsnes/libsnes.cpp
@@ -38,7 +38,7 @@ unsigned snes_library_revision_major(void) {
 }
 
 unsigned snes_library_revision_minor(void) {
-  return 0;
+  return 1;
 }
 
 void snes_set_video_refresh(snes_video_refresh_t video_refresh) {
@@ -61,6 +61,10 @@ void snes_set_controller_port_device(bool port, unsigned device) {
   SNES::input.port_set_device(port, (SNES::Input::Device::e)device);
 }
 
+void snes_set_cartridge_basename(const char *basename) {
+  SNES::cartridge.basename = basename;
+}
+
 void snes_init(void) {
   SNES::system.init(&interface);
   SNES::input.port_set_device(0, SNES::Input::Device::Joypad);
diff --git a/snes/libsnes/libsnes.hpp b/snes/libsnes/libsnes.hpp
index 2eaee5d..a7f25a5 100644
--- a/snes/libsnes/libsnes.hpp
+++ b/snes/libsnes/libsnes.hpp
@@ -205,6 +205,7 @@ void snes_set_input_state(snes_input_state_t);
    it safe to call this method from inside the input state callback?
 */
 void snes_set_controller_port_device(bool port, unsigned device);
+void snes_set_cartridge_basename(const char *basename);
 
 // Initializes library
 void snes_init(void);
diff --git a/snes/snes.hpp b/snes/snes.hpp
index 0b893c4..4f43728 100644
--- a/snes/snes.hpp
+++ b/snes/snes.hpp
@@ -1,8 +1,8 @@
 namespace SNES {
   namespace Info {
     static const char Name[] = "bsnes";
-    static const char Version[] = "070";
-    static const unsigned SerializerVersion = 13;
+    static const char Version[] = "072";
+    static const unsigned SerializerVersion = 14;
   }
 }
 
diff --git a/snes/system/system.cpp b/snes/system/system.cpp
index 3e264aa..62be0ca 100644
--- a/snes/system/system.cpp
+++ b/snes/system/system.cpp
@@ -92,6 +92,9 @@ void System::init(Interface *interface_) {
   video.init();
   audio.init();
   input.init();
+
+  input.port_set_device(0, config.controller_port1.i);
+  input.port_set_device(1, config.controller_port2.i);
 }
 
 void System::term() {
@@ -173,8 +176,6 @@ void System::power() {
 
   scheduler.init();
 
-  input.port_set_device(0, config.controller_port1.i);
-  input.port_set_device(1, config.controller_port2.i);
   input.update();
 //video.update();
 }