diff --git a/higan/emulator/emulator.hpp b/higan/emulator/emulator.hpp
index 456823e7..f4038825 100644
--- a/higan/emulator/emulator.hpp
+++ b/higan/emulator/emulator.hpp
@@ -28,7 +28,7 @@ using namespace nall;
 
 namespace Emulator {
   static const string Name    = "higan";
-  static const string Version = "106.65";
+  static const string Version = "106.66";
   static const string Author  = "byuu";
   static const string License = "GPLv3";
   static const string Website = "https://byuu.org/";
diff --git a/higan/md/cartridge/serialization.cpp b/higan/md/cartridge/serialization.cpp
index 2b13fd8e..4866fe76 100644
--- a/higan/md/cartridge/serialization.cpp
+++ b/higan/md/cartridge/serialization.cpp
@@ -3,5 +3,11 @@ auto Cartridge::serialize(serializer& s) -> void {
   s.integer(ramEnable);
   s.integer(ramWritable);
   s.array(romBank);
+  s.boolean(gameGenie.enable);
+  for(auto& code : gameGenie.codes) {
+    s.boolean(code.enable);
+    s.integer(code.address);
+    s.integer(code.data);
+  }
   if(slot) slot->serialize(s);
 }
diff --git a/higan/processor/huc6280/instructions.cpp b/higan/processor/huc6280/instructions.cpp
index 63c18110..3713dd51 100644
--- a/higan/processor/huc6280/instructions.cpp
+++ b/higan/processor/huc6280/instructions.cpp
@@ -139,7 +139,8 @@ L io();
 }
 
 auto HuC6280::instructionImmediate(fp alu, uint8& data) -> void {
-L data = ALU(operand());
+L io();
+  data = ALU(operand());
 }
 
 auto HuC6280::instructionImplied(fp alu, uint8& data) -> void {
diff --git a/higan/sfc/cartridge/load.cpp b/higan/sfc/cartridge/load.cpp
index ca8932d1..2034d66d 100644
--- a/higan/sfc/cartridge/load.cpp
+++ b/higan/sfc/cartridge/load.cpp
@@ -125,7 +125,7 @@ auto Cartridge::loadMemory(Memory& ram, Markup::Node node, bool required) -> voi
     if(memory->type == "RAM" && !memory->nonVolatile) return;
     if(memory->type == "RTC" && !memory->nonVolatile) return;
     if(auto fp = platform->open(pathID(), memory->name(), File::Read, required)) {
-      fp->read(ram.data(), ram.size());
+      fp->read(ram.data(), min(fp->size(), ram.size()));
     }
   }
 }
diff --git a/higan/sfc/coprocessor/spc7110/serialization.cpp b/higan/sfc/coprocessor/spc7110/serialization.cpp
index 8c490712..5860be4b 100644
--- a/higan/sfc/coprocessor/spc7110/serialization.cpp
+++ b/higan/sfc/coprocessor/spc7110/serialization.cpp
@@ -1,4 +1,5 @@
 auto SPC7110::serialize(serializer& s) -> void {
+  Thread::serialize(s);
   s.array(ram.data(), ram.size());
 
   s.integer(r4801);
diff --git a/higan/target-bsnes/presentation/presentation.cpp b/higan/target-bsnes/presentation/presentation.cpp
index 502a45ba..2d932d58 100644
--- a/higan/target-bsnes/presentation/presentation.cpp
+++ b/higan/target-bsnes/presentation/presentation.cpp
@@ -224,6 +224,9 @@ auto Presentation::clearViewport() -> void {
   if(!emulator->loaded()) viewportLayout.setPadding();
   if(!visible() || !video) return;
 
+  uint32_t opaqueBlack = 0xff000000;
+  if(settings.video.format == "RGB30") opaqueBlack = 0xc0000000;
+
   uint32_t* output;
   uint length;
   uint width = 16;
@@ -231,7 +234,7 @@ auto Presentation::clearViewport() -> void {
   if(video.acquire(output, length, width, height)) {
     for(uint y : range(height)) {
       auto line = output + y * (length >> 2);
-      for(uint x : range(width)) *line++ = 0xff000000;
+      for(uint x : range(width)) *line++ = opaqueBlack;
     }
     video.release();
     video.output();
diff --git a/higan/target-bsnes/program/video.cpp b/higan/target-bsnes/program/video.cpp
index 989fd901..cb92be7f 100644
--- a/higan/target-bsnes/program/video.cpp
+++ b/higan/target-bsnes/program/video.cpp
@@ -50,6 +50,8 @@ auto Program::updateVideoFormat() -> void {
     settings.video.format = video.format();
   }
   video.setFormat(settings.video.format);
+  Emulator::video.setDepth(settings.video.format == "RGB30" ? 30 : 24);
+  Emulator::video.setPalette();
 }
 
 auto Program::updateVideoShader() -> void {
diff --git a/higan/target-bsnes/settings/drivers.cpp b/higan/target-bsnes/settings/drivers.cpp
index 5f090aea..740291c1 100644
--- a/higan/target-bsnes/settings/drivers.cpp
+++ b/higan/target-bsnes/settings/drivers.cpp
@@ -153,12 +153,13 @@ auto DriverSettings::videoFormatChanged() -> void {
   }
 //videoFormatOption.setEnabled(video.hasFormat());
   layout.setGeometry(layout.geometry());
+  videoFormatChange();
 }
 
 auto DriverSettings::videoFormatChange() -> void {
   auto item = videoFormatOption.selected();
   settings.video.format = item.text();
-  video.setFormat(item.text());
+  program.updateVideoFormat();
 }
 
 //
diff --git a/higan/video/video.cpp b/higan/video/video.cpp
index 323afac8..41dba9cc 100644
--- a/higan/video/video.cpp
+++ b/higan/video/video.cpp
@@ -60,11 +60,17 @@ auto Video::setPalette() -> void {
       b = uclamp<16>(b * luminance);
     }
 
-    //convert color from 16-bits/channel to 8-bits/channel; force alpha to 1.0
-    palette[index] = a.byte(1) << 24 | r.byte(1) << 16 | g.byte(1) << 8 | b.byte(1) << 0;
+    switch(depth) {
+    case 24: palette[index] = r >> 8 << 16 | g >> 8 <<  8 | b >> 8 << 0; break;
+    case 30: palette[index] = r >> 6 << 20 | g >> 6 << 10 | b >> 6 << 0; break;
+    }
   }
 }
 
+auto Video::setDepth(uint depth) -> void {
+  this->depth = depth;
+}
+
 auto Video::setSaturation(double saturation) -> void {
   this->saturation = saturation;
 }
@@ -130,21 +136,23 @@ auto Video::refresh(uint32* input, uint pitch, uint width, uint height) -> void
         *target++ = color;
       }
     } else {
+      uint32 mask = depth == 30 ? 0x40100401 : 0x01010101;
       for(uint x : range(width)) {
         auto a = *target;
         auto b = palette[*source++];
-        *target++ = (a + b - ((a ^ b) & 0x01010101)) >> 1;
+        *target++ = (a + b - ((a ^ b) & mask)) >> 1;
       }
     }
   }
 
   if(effects.colorBleed) {
+    uint32 mask = depth == 30 ? 0x40100401 : 0x01010101;
     for(uint y : range(height)) {
       auto target = output + y * width;
       for(uint x : range(width)) {
         auto a = target[x];
         auto b = target[x + (x != width - 1)];
-        target[x] = (a + b - ((a ^ b) & 0x01010101)) >> 1;
+        target[x] = (a + b - ((a ^ b) & mask)) >> 1;
       }
     }
   }
@@ -164,6 +172,7 @@ auto Video::refresh(uint32* input, uint pitch, uint width, uint height) -> void
   for(auto& sprite : sprites) {
     if(!sprite->visible) continue;
 
+    uint32 opaqueAlpha = depth == 30 ? 0xc0000000 : 0xff000000;
     for(int y : range(sprite->height)) {
       for(int x : range(sprite->width)) {
         int pixelY = sprite->y + y;
@@ -173,7 +182,7 @@ auto Video::refresh(uint32* input, uint pitch, uint width, uint height) -> void
         if(pixelX < 0 || pixelX >= width) continue;
 
         auto pixel = sprite->pixels[y * sprite->width + x];
-        if(pixel) output[pixelY * width + pixelX] = 0xff000000 | pixel;
+        if(pixel) output[pixelY * width + pixelX] = opaqueAlpha | pixel;
       }
     }
   }
diff --git a/higan/video/video.hpp b/higan/video/video.hpp
index 7c71155d..7b57d829 100644
--- a/higan/video/video.hpp
+++ b/higan/video/video.hpp
@@ -17,6 +17,7 @@ struct Video {
   auto reset(Interface* interface) -> void;
 
   auto setPalette() -> void;
+  auto setDepth(uint depth) -> void;
   auto setSaturation(double saturation) -> void;
   auto setGamma(double gamma) -> void;
   auto setLuminance(double luminance) -> void;
@@ -40,6 +41,7 @@ private:
   uint height = 0;
   uint colors = 0;
 
+  uint depth = 24;
   double saturation = 1.0;
   double gamma = 1.0;
   double luminance = 1.0;
diff --git a/nall/GNUmakefile b/nall/GNUmakefile
index 11308530..86446002 100644
--- a/nall/GNUmakefile
+++ b/nall/GNUmakefile
@@ -40,28 +40,28 @@ ifeq ($(platform),)
 endif
 
 compiler.c      = $(compiler) -x c -std=c11
-compiler.cpp    = $(compiler) -x c++ -std=c++14
+compiler.cpp    = $(compiler) -x c++ -std=c++17
 compiler.objc   = $(compiler) -x objective-c -std=c11
-compiler.objcpp = $(compiler) -x objective-c++ -std=c++14
+compiler.objcpp = $(compiler) -x objective-c++ -std=c++17
 
 flags.c      = -x c -std=c11
-flags.cpp    = -x c++ -std=c++14
+flags.cpp    = -x c++ -std=c++17
 flags.objc   = -x objective-c -std=c11
-flags.objcpp = -x objective-c++ -std=c++14
+flags.objcpp = -x objective-c++ -std=c++17
 flags.deps   = -MMD -MP -MF $(@:.o=.d)
 
 # compiler detection
 ifeq ($(compiler),)
   ifeq ($(platform),windows)
     compiler := g++
-    compiler.cpp = $(compiler) -x c++ -std=gnu++14
-    flags.cpp = -x c++ -std=gnu++14
+    compiler.cpp = $(compiler) -x c++ -std=gnu++17
+    flags.cpp = -x c++ -std=gnu++17
   else ifeq ($(platform),macos)
     compiler := clang++
   else ifeq ($(platform),linux)
     compiler := g++
   else ifeq ($(platform),bsd)
-    compiler := g++49
+    compiler := g++8
   else
     compiler := g++
   endif
@@ -126,7 +126,8 @@ endif
 ifeq ($(platform),bsd)
   flags   += -I/usr/local/include
   options += -Wl,-rpath=/usr/local/lib
-  options += -Wl,-rpath=/usr/local/lib/gcc49
+  options += -Wl,-rpath=/usr/local/lib/gcc8
+  options += -lstdc++ -lm
 endif
 
 # threading support
diff --git a/nall/file-map.hpp b/nall/file-map.hpp
index 329e781e..647a823b 100644
--- a/nall/file-map.hpp
+++ b/nall/file-map.hpp
@@ -15,6 +15,11 @@
   #include <sys/types.h>
 #endif
 
+#if !defined(MAP_NORESERVE)
+  //not supported on FreeBSD; flag removed in 11.0
+  #define MAP_NORESERVE 0
+#endif
+
 namespace nall {
 
 struct file_map {
@@ -39,7 +44,7 @@ struct file_map {
 //auto close() -> void;
 
 private:
-  bool _open = false;
+  bool _open = false;  //zero-byte files return _data = nullptr, _size = 0
   uint8_t* _data = nullptr;
   uint64_t _size = 0;
 
@@ -66,6 +71,9 @@ public:
   }
 
   auto open(const string& filename, uint mode_) -> bool {
+    close();
+    if(file::exists(filename) && file::size(filename) == 0) return _open = true;
+
     int desiredAccess, creationDisposition, protection, mapAccess;
 
     switch(mode_) {
@@ -111,7 +119,7 @@ public:
     }
 
     _data = (uint8_t*)MapViewOfFile(_map, mapAccess, 0, 0, _size);
-    return _open = _data;
+    return _open = true;
   }
 
   auto close() -> void {
@@ -154,6 +162,8 @@ public:
 
   auto open(const string& filename, uint mode_) -> bool {
     close();
+    if(file::exists(filename) && file::size(filename) == 0) return _open = true;
+
     int openFlags = 0;
     int mmapFlags = 0;
 
@@ -192,7 +202,7 @@ public:
       return false;
     }
 
-    return _open = _data;
+    return _open = true;
   }
 
   auto close() -> void {
diff --git a/nall/intrinsics.hpp b/nall/intrinsics.hpp
index 00ac58c6..a522ea03 100644
--- a/nall/intrinsics.hpp
+++ b/nall/intrinsics.hpp
@@ -7,7 +7,7 @@ namespace nall {
   enum class Platform : uint { Windows, MacOS, Linux, BSD, Unknown };
   enum class API : uint { Windows, Posix, Unknown };
   enum class DisplayServer : uint { Windows, Quartz, Xorg, Unknown };
-  enum class Architecture : uint { x86, amd64, ARM, PPC32, PPC64, Unknown };
+  enum class Architecture : uint { x86, amd64, ARM32, ARM64, PPC32, PPC64, Unknown };
   enum class Endian : uint { LSB, MSB, Unknown };
   enum class Build : uint { Debug, Stable, Size, Release, Performance };
 
@@ -123,9 +123,12 @@ namespace nall {
 #elif defined(__amd64__) || defined(_M_AMD64)
   #define ARCHITECTURE_AMD64
   constexpr auto architecture() -> Architecture { return Architecture::amd64; }
+#elif defined(__aarch64__)
+  #define ARCHITECTURE_ARM64
+  constexpr auto architecture() -> Architecture { return Architecture::ARM64; }
 #elif defined(__arm__)
-  #define ARCHITECTURE_ARM
-  constexpr auto architecture() -> Architecture { return Architecture::ARM; }
+  #define ARCHITECTURE_ARM32
+  constexpr auto architecture() -> Architecture { return Architecture::ARM32; }
 #elif defined(__ppc64__) || defined(_ARCH_PPC64)
   #define ARCHITECTURE_PPC64
   constexpr auto architecture() -> Architecture { return Architecture::PPC64; }
diff --git a/ruby/video/glx.cpp b/ruby/video/glx.cpp
index da5a536d..569fa186 100644
--- a/ruby/video/glx.cpp
+++ b/ruby/video/glx.cpp
@@ -26,7 +26,7 @@ struct VideoGLX : VideoDriver, OpenGL {
   auto hasShader() -> bool override { return true; }
 
   auto hasFormats() -> vector<string> override {
-    return {"RGB24"};  //"RGB30"
+    return {"RGB24"};  //"RGB30" is currently broken; use OpenGL 2.0 driver instead
   }
 
   auto setContext(uintptr context) -> bool override {
diff --git a/ruby/video/glx2.cpp b/ruby/video/glx2.cpp
index 667113e7..ff5a14b6 100644
--- a/ruby/video/glx2.cpp
+++ b/ruby/video/glx2.cpp
@@ -37,7 +37,7 @@ struct VideoGLX2 : VideoDriver {
   auto hasContext() -> bool override { return true; }
   auto hasBlocking() -> bool override { return true; }
   auto hasFlush() -> bool override { return true; }
-  auto hasFormats() -> vector<string> override { return {"RGB24"}; }
+  auto hasFormats() -> vector<string> override { return {"RGB24", "RGB30"}; }
   auto hasShader() -> bool override { return true; }
 
   auto setContext(uintptr context) -> bool override {