diff --git a/higan/emulator/emulator.hpp b/higan/emulator/emulator.hpp
index 4c643c40..fd1951e1 100644
--- a/higan/emulator/emulator.hpp
+++ b/higan/emulator/emulator.hpp
@@ -9,7 +9,7 @@ using namespace nall;
 
 namespace Emulator {
   static const string Name = "higan";
-  static const string Version = "098.17";
+  static const string Version = "098.18";
   static const string Author = "byuu";
   static const string License = "GPLv3";
   static const string Website = "http://byuu.org/";
diff --git a/higan/gb/ppu/mmio.cpp b/higan/gb/ppu/mmio.cpp
index cc438708..7c8c86a6 100644
--- a/higan/gb/ppu/mmio.cpp
+++ b/higan/gb/ppu/mmio.cpp
@@ -139,6 +139,12 @@ auto PPU::mmio_write(uint16 addr, uint8 data) -> void {
     status.interrupt_oam = data & 0x20;
     status.interrupt_vblank = data & 0x10;
     status.interrupt_hblank = data & 0x08;
+
+    //hardware bug: writes to STAT on DMG,SGB during blanking triggers STAT IRQ
+    if(!system.cgb() && status.mode < 2) {
+      cpu.raise(CPU::Interrupt::Stat);
+    }
+
     return;
   }
 
diff --git a/higan/processor/r65816/opcode_misc.cpp b/higan/processor/r65816/opcode_misc.cpp
index ea300cf2..241a3404 100644
--- a/higan/processor/r65816/opcode_misc.cpp
+++ b/higan/processor/r65816/opcode_misc.cpp
@@ -9,7 +9,9 @@ L readPC();
 auto R65816::op_xba() {
   io();
 L io();
-  swap(r.a.l, r.a.h);
+  r.a.l ^= r.a.h;
+  r.a.h ^= r.a.l;
+  r.a.l ^= r.a.h;
   r.p.n = (r.a.l & 0x80);
   r.p.z = (r.a.l == 0);
 }
diff --git a/higan/processor/r65816/registers.hpp b/higan/processor/r65816/registers.hpp
index dbe92d8b..84a852e3 100644
--- a/higan/processor/r65816/registers.hpp
+++ b/higan/processor/r65816/registers.hpp
@@ -23,6 +23,8 @@ struct Flags {
 struct reg16 {
   union {
     uint16_t w = 0;
+  //BitField<uint16_t, 0,  7> l;
+  //BitField<uint16_t, 8, 15> h;
     struct { uint8_t order_lsb2(l, h); };
   };
 
@@ -43,6 +45,12 @@ struct reg16 {
 struct reg24 {
   union {
     uint32_t d = 0;
+  //BitField<uint32_t,  0, 15> w;
+  //BitField<uint32_t, 16, 31> wh;
+  //BitField<uint32_t,  0,  7> l;
+  //BitField<uint32_t,  8, 15> h;
+  //BitField<uint32_t, 16, 23> b;
+  //BitField<uint32_t, 24, 31> bh;
     struct { uint16_t order_lsb2(w, wh); };
     struct { uint8_t  order_lsb4(l, h, b, bh); };
   };
diff --git a/hiro/extension/browser-dialog.cpp b/hiro/extension/browser-dialog.cpp
index 22601081..46eb9586 100644
--- a/hiro/extension/browser-dialog.cpp
+++ b/hiro/extension/browser-dialog.cpp
@@ -181,6 +181,7 @@ auto BrowserDialogWindow::setPath(string path) -> void {
   }
 
   Application::processEvents();
+  view->resizeColumns();  //todo: on Windows, adding items may add vertical scrollbar; this hack corrects column width
   view.setFocused().doChange();
 }
 
diff --git a/hiro/windows/widget/table-view.cpp b/hiro/windows/widget/table-view.cpp
index fb0c3040..8ee4e221 100644
--- a/hiro/windows/widget/table-view.cpp
+++ b/hiro/windows/widget/table-view.cpp
@@ -46,6 +46,7 @@ auto pTableView::destruct() -> void {
 }
 
 auto pTableView::append(sTableViewHeader header) -> void {
+  resizeColumns();
 }
 
 auto pTableView::append(sTableViewItem item) -> void {
diff --git a/nall/bit.hpp b/nall/bit.hpp
index 8c8c5172..f2a54b6e 100644
--- a/nall/bit.hpp
+++ b/nall/bit.hpp
@@ -49,12 +49,12 @@ namespace bit {
   }
 
   //clear_lowest(0b1110) == 0b1100
-  constexpr inline auto clear_lowest(const uintmax x) -> uintmax {
+  constexpr inline auto clearLowest(const uintmax x) -> uintmax {
     return x & (x - 1);
   }
 
   //set_lowest(0b0101) == 0b0111
-  constexpr inline auto set_lowest(const uintmax x) -> uintmax {
+  constexpr inline auto setLowest(const uintmax x) -> uintmax {
     return x | (x + 1);
   }
 
diff --git a/nall/primitives.hpp b/nall/primitives.hpp
index f551aa54..0c8a4d2b 100644
--- a/nall/primitives.hpp
+++ b/nall/primitives.hpp
@@ -5,6 +5,52 @@
 
 namespace nall {
 
+template<typename Type, uint Lo, uint Hi> struct BitField {
+  static_assert(Lo <= Hi, "");
+  static_assert(Hi < sizeof(Type) * 8, "");
+
+  inline BitField() = default;
+  inline BitField(const BitField& value) { set(value.data); }
+  template<typename T> inline BitField(const T& value) { set(value << Lo); }
+
+//inline explicit operator bool() const { return data & Mask; }
+  inline operator Type() const { return get(); }
+
+  inline auto& operator=(const BitField& value) { return set(value.data); }
+  template<typename T> inline auto& operator=(const T& value) { return set(value << Lo); }
+
+  inline auto operator++(int) { Type value = get(); set(data + (1 << Lo)); return value; }
+  inline auto operator--(int) { Type value = get(); set(data - (1 << Lo)); return value; }
+
+  inline auto& operator++() { return set(data + (1 << Lo)); }
+  inline auto& operator--() { return set(data - (1 << Lo)); }
+
+  inline auto& operator &=(const Type value) { return set(data  & (value << Lo)); }
+  inline auto& operator |=(const Type value) { return set(data  | (value << Lo)); }
+  inline auto& operator ^=(const Type value) { return set(data  ^ (value << Lo)); }
+  inline auto& operator<<=(const Type value) { return set(data << value); }
+  inline auto& operator>>=(const Type value) { return set(data >> value); }
+  inline auto& operator +=(const Type value) { return set(data  + (value << Lo)); }
+  inline auto& operator -=(const Type value) { return set(data  - (value << Lo)); }
+  inline auto& operator *=(const Type value) { return set((get() * value) << Lo); }
+  inline auto& operator /=(const Type value) { return set((get() / value) << Lo); }
+  inline auto& operator %=(const Type value) { return set((get() % value) << Lo); }
+
+private:
+  enum : uint { Bits = Hi - Lo + 1 };
+  enum : uint { Mask = ((1ull << Bits) - 1) << Lo };
+  Type data;
+
+  inline auto get() const -> Type {
+    return (data & Mask) >> Lo;
+  }
+
+  inline auto set(Type value) -> BitField& {
+    data = (data & ~Mask) | (value & Mask);
+    return *this;
+  }
+};
+
 struct Boolean {
   inline Boolean() : data(false) {}
   template<typename T> inline Boolean(const T& value) : data(value) {}
@@ -29,27 +75,27 @@ template<uint Bits> struct Natural {
   enum : type { Mask = ~0ull >> (64 - Bits) };
 
   inline Natural() : data(0) {}
-  template<typename T> inline Natural(const T& value) { assign(value); }
+  template<typename T> inline Natural(const T& value) { set(value); }
 
   inline operator type() const { return data; }
-  template<typename T> inline auto& operator=(const T& value) { assign(value); return *this; }
+  template<typename T> inline auto& operator=(const T& value) { set(value); return *this; }
 
-  inline auto operator++(int) { type value = data; assign(data + 1); return value; }
-  inline auto operator--(int) { type value = data; assign(data - 1); return value; }
+  inline auto operator++(int) { type value = data; set(data + 1); return value; }
+  inline auto operator--(int) { type value = data; set(data - 1); return value; }
 
-  inline auto& operator++() { assign(data + 1); return *this; }
-  inline auto& operator--() { assign(data - 1); return *this; }
+  inline auto& operator++() { set(data + 1); return *this; }
+  inline auto& operator--() { set(data - 1); return *this; }
 
-  inline auto& operator &=(const type value) { assign(data  & value); return *this; }
-  inline auto& operator |=(const type value) { assign(data  | value); return *this; }
-  inline auto& operator ^=(const type value) { assign(data  ^ value); return *this; }
-  inline auto& operator<<=(const type value) { assign(data << value); return *this; }
-  inline auto& operator>>=(const type value) { assign(data >> value); return *this; }
-  inline auto& operator +=(const type value) { assign(data  + value); return *this; }
-  inline auto& operator -=(const type value) { assign(data  - value); return *this; }
-  inline auto& operator *=(const type value) { assign(data  * value); return *this; }
-  inline auto& operator /=(const type value) { assign(data  / value); return *this; }
-  inline auto& operator %=(const type value) { assign(data  % value); return *this; }
+  inline auto& operator &=(const type value) { set(data  & value); return *this; }
+  inline auto& operator |=(const type value) { set(data  | value); return *this; }
+  inline auto& operator ^=(const type value) { set(data  ^ value); return *this; }
+  inline auto& operator<<=(const type value) { set(data << value); return *this; }
+  inline auto& operator>>=(const type value) { set(data >> value); return *this; }
+  inline auto& operator +=(const type value) { set(data  + value); return *this; }
+  inline auto& operator -=(const type value) { set(data  - value); return *this; }
+  inline auto& operator *=(const type value) { set(data  * value); return *this; }
+  inline auto& operator /=(const type value) { set(data  / value); return *this; }
+  inline auto& operator %=(const type value) { set(data  % value); return *this; }
 
   inline auto serialize(serializer& s) { s(data); }
 
@@ -92,7 +138,7 @@ template<uint Bits> struct Natural {
   }
 
 private:
-  auto assign(type value) -> void {
+  auto set(type value) -> void {
     data = value & Mask;
   }
 
@@ -111,27 +157,27 @@ template<uint Bits> struct Integer {
   enum : utype { Mask = ~0ull >> (64 - Bits), Sign = 1ull << (Bits - 1) };
 
   inline Integer() : data(0) {}
-  template<typename T> inline Integer(const T& value) { assign(value); }
+  template<typename T> inline Integer(const T& value) { set(value); }
 
   inline operator type() const { return data; }
-  template<typename T> inline auto& operator=(const T& value) { assign(value); return *this; }
+  template<typename T> inline auto& operator=(const T& value) { set(value); return *this; }
 
-  inline auto operator++(int) { type value = data; assign(data + 1); return value; }
-  inline auto operator--(int) { type value = data; assign(data - 1); return value; }
+  inline auto operator++(int) { type value = data; set(data + 1); return value; }
+  inline auto operator--(int) { type value = data; set(data - 1); return value; }
 
-  inline auto& operator++() { assign(data + 1); return *this; }
-  inline auto& operator--() { assign(data - 1); return *this; }
+  inline auto& operator++() { set(data + 1); return *this; }
+  inline auto& operator--() { set(data - 1); return *this; }
 
-  inline auto& operator &=(const type value) { assign(data  & value); return *this; }
-  inline auto& operator |=(const type value) { assign(data  | value); return *this; }
-  inline auto& operator ^=(const type value) { assign(data  ^ value); return *this; }
-  inline auto& operator<<=(const type value) { assign(data << value); return *this; }
-  inline auto& operator>>=(const type value) { assign(data >> value); return *this; }
-  inline auto& operator +=(const type value) { assign(data  + value); return *this; }
-  inline auto& operator -=(const type value) { assign(data  - value); return *this; }
-  inline auto& operator *=(const type value) { assign(data  * value); return *this; }
-  inline auto& operator /=(const type value) { assign(data  / value); return *this; }
-  inline auto& operator %=(const type value) { assign(data  % value); return *this; }
+  inline auto& operator &=(const type value) { set(data  & value); return *this; }
+  inline auto& operator |=(const type value) { set(data  | value); return *this; }
+  inline auto& operator ^=(const type value) { set(data  ^ value); return *this; }
+  inline auto& operator<<=(const type value) { set(data << value); return *this; }
+  inline auto& operator>>=(const type value) { set(data >> value); return *this; }
+  inline auto& operator +=(const type value) { set(data  + value); return *this; }
+  inline auto& operator -=(const type value) { set(data  - value); return *this; }
+  inline auto& operator *=(const type value) { set(data  * value); return *this; }
+  inline auto& operator /=(const type value) { set(data  / value); return *this; }
+  inline auto& operator %=(const type value) { set(data  % value); return *this; }
 
   inline auto serialize(serializer& s) { s(data); }
 
@@ -174,7 +220,7 @@ template<uint Bits> struct Integer {
   }
 
 private:
-  auto assign(type value) -> void {
+  auto set(type value) -> void {
     data = ((value & Mask) ^ Sign) - Sign;
   }
 
@@ -208,6 +254,7 @@ template<uint Bits> struct Real {
 
   inline auto serialize(serializer& s) { s(data); }
 
+private:
   type data;
 };