diff --git a/genius/GNUmakefile b/genius/GNUmakefile
index f2fc8468..f119cd8f 100644
--- a/genius/GNUmakefile
+++ b/genius/GNUmakefile
@@ -34,7 +34,7 @@ endif
 	$(call delete,obj/*)
 	$(call delete,out/*)
 
-install:
+install: all
 ifeq ($(platform),macos)
 	cp -R out/$(name).app /Applications/$(name).app
 else ifneq ($(filter $(platform),linux bsd),)
diff --git a/higan/GNUmakefile b/higan/GNUmakefile
index b74420df..a2e21e18 100644
--- a/higan/GNUmakefile
+++ b/higan/GNUmakefile
@@ -34,16 +34,13 @@ else
   $(error "unsupported platform")
 endif
 
-objects := libco emulator audio video resource
+objects := libco emulator
 
 obj/libco.o: ../libco/libco.c
 obj/emulator.o: emulator/emulator.cpp
-obj/audio.o: audio/audio.cpp
-obj/video.o: video/video.cpp
-obj/resource.o: resource/resource.cpp
 
 ifeq ($(target),higan)
-  cores := fc sfc ms md pce gb gba ws
+  cores := fc sfc ms md pce msx gb gba ws ngp
 endif
 
 ifeq ($(target),bsnes)
@@ -70,6 +67,10 @@ ifneq ($(filter $(cores),pce),)
   include pce/GNUmakefile
 endif
 
+ifneq ($(filter $(cores),msx),)
+  include msx/GNUmakefile
+endif
+
 ifneq ($(filter $(cores),gb),)
   include gb/GNUmakefile
 endif
@@ -82,6 +83,10 @@ ifneq ($(filter $(cores),ws),)
   include ws/GNUmakefile
 endif
 
+ifneq ($(filter $(cores),ngp),)
+  include ngp/GNUmakefile
+endif
+
 include processor/GNUmakefile
 
 flags += $(foreach c,$(call strupper,$(cores)),-DCORE_$c)
diff --git a/higan/audio/audio.cpp b/higan/emulator/audio/audio.cpp
similarity index 97%
rename from higan/audio/audio.cpp
rename to higan/emulator/audio/audio.cpp
index dd3ba81e..c6fb080a 100644
--- a/higan/audio/audio.cpp
+++ b/higan/emulator/audio/audio.cpp
@@ -1,5 +1,3 @@
-#include <emulator/emulator.hpp>
-
 namespace Emulator {
 
 #include "stream.cpp"
diff --git a/higan/audio/audio.hpp b/higan/emulator/audio/audio.hpp
similarity index 100%
rename from higan/audio/audio.hpp
rename to higan/emulator/audio/audio.hpp
diff --git a/higan/audio/stream.cpp b/higan/emulator/audio/stream.cpp
similarity index 100%
rename from higan/audio/stream.cpp
rename to higan/emulator/audio/stream.cpp
diff --git a/higan/emulator/emulator.cpp b/higan/emulator/emulator.cpp
index 6c80656d..5bc72fcb 100644
--- a/higan/emulator/emulator.cpp
+++ b/higan/emulator/emulator.cpp
@@ -1,5 +1,9 @@
 #include <emulator/emulator.hpp>
 
+#include <emulator/audio/audio.cpp>
+#include <emulator/video/video.cpp>
+#include <emulator/resource/resource.cpp>
+
 namespace Emulator {
 
 Platform* platform = nullptr;
diff --git a/higan/emulator/emulator.hpp b/higan/emulator/emulator.hpp
index 6f9416fe..bbdeddef 100644
--- a/higan/emulator/emulator.hpp
+++ b/higan/emulator/emulator.hpp
@@ -20,15 +20,15 @@
 #include <nall/hash/sha256.hpp>
 using namespace nall;
 
-#include "types.hpp"
 #include <libco/libco.h>
-#include <audio/audio.hpp>
-#include <video/video.hpp>
-#include <resource/resource.hpp>
+#include <emulator/types.hpp>
+#include <emulator/audio/audio.hpp>
+#include <emulator/video/video.hpp>
+#include <emulator/resource/resource.hpp>
 
 namespace Emulator {
   static const string Name    = "higan";
-  static const string Version = "106.67";
+  static const string Version = "106.68";
   static const string Author  = "byuu";
   static const string License = "GPLv3";
   static const string Website = "https://byuu.org/";
diff --git a/higan/emulator/memory.hpp b/higan/emulator/memory.hpp
new file mode 100644
index 00000000..43bc3f74
--- /dev/null
+++ b/higan/emulator/memory.hpp
@@ -0,0 +1,46 @@
+#pragma once
+
+namespace Emulator {
+
+template<typename type>
+struct WritableMemory {
+  inline auto reset() -> void {
+    delete[] self.data;
+    self.data = nullptr;
+    self.size = 0;
+    self.mask = 0;
+  }
+
+  inline auto allocate(uint size, type fill = ~0ull) -> void {
+    delete[] self.data;
+    self.size = size;
+    self.mask = bit::round(size) - 1;
+    self.data = new uint8[self.mask];
+    memory::fill<type>(self.data, size, fill);
+  }
+
+  explicit operator bool() const { return (bool)self.data; }
+  inline auto data() -> type* { return self.data; }
+  inline auto size() const -> uint { return self.size; }
+  inline auto mask() const -> uint { return self.mask; }
+
+  inline auto operator[](uint address) -> type& {
+    return self.data[address & self.mask];
+  }
+
+  inline auto read(uint address) -> type {
+    return self.data[address & self.mask];
+  }
+
+  inline auto write(uint address, type data) -> void {
+    self.data[address & self.mask] = data;
+  }
+
+  struct {
+    type* data = nullptr;
+    uint size = 0;
+    uint mask = 0;
+  } self;
+};
+
+}
diff --git a/higan/resource/GNUmakefile b/higan/emulator/resource/GNUmakefile
similarity index 100%
rename from higan/resource/GNUmakefile
rename to higan/emulator/resource/GNUmakefile
diff --git a/higan/resource/resource.bml b/higan/emulator/resource/resource.bml
similarity index 100%
rename from higan/resource/resource.bml
rename to higan/emulator/resource/resource.bml
diff --git a/higan/resource/resource.cpp b/higan/emulator/resource/resource.cpp
similarity index 100%
rename from higan/resource/resource.cpp
rename to higan/emulator/resource/resource.cpp
diff --git a/higan/resource/resource.hpp b/higan/emulator/resource/resource.hpp
similarity index 100%
rename from higan/resource/resource.hpp
rename to higan/emulator/resource/resource.hpp
diff --git a/higan/resource/sprite/crosshair-blue.png b/higan/emulator/resource/sprite/crosshair-blue.png
similarity index 100%
rename from higan/resource/sprite/crosshair-blue.png
rename to higan/emulator/resource/sprite/crosshair-blue.png
diff --git a/higan/resource/sprite/crosshair-green.png b/higan/emulator/resource/sprite/crosshair-green.png
similarity index 100%
rename from higan/resource/sprite/crosshair-green.png
rename to higan/emulator/resource/sprite/crosshair-green.png
diff --git a/higan/resource/sprite/crosshair-red.png b/higan/emulator/resource/sprite/crosshair-red.png
similarity index 100%
rename from higan/resource/sprite/crosshair-red.png
rename to higan/emulator/resource/sprite/crosshair-red.png
diff --git a/higan/video/sprite.cpp b/higan/emulator/video/sprite.cpp
similarity index 100%
rename from higan/video/sprite.cpp
rename to higan/emulator/video/sprite.cpp
diff --git a/higan/video/video.cpp b/higan/emulator/video/video.cpp
similarity index 99%
rename from higan/video/video.cpp
rename to higan/emulator/video/video.cpp
index 41dba9cc..d06d0be9 100644
--- a/higan/video/video.cpp
+++ b/higan/emulator/video/video.cpp
@@ -1,5 +1,3 @@
-#include <emulator/emulator.hpp>
-
 namespace Emulator {
 
 #include "sprite.cpp"
diff --git a/higan/video/video.hpp b/higan/emulator/video/video.hpp
similarity index 100%
rename from higan/video/video.hpp
rename to higan/emulator/video/video.hpp
diff --git a/higan/gba/system/system.cpp b/higan/gba/system/system.cpp
index 02b51390..cbdbe341 100644
--- a/higan/gba/system/system.cpp
+++ b/higan/gba/system/system.cpp
@@ -41,7 +41,7 @@ auto System::load(Emulator::Interface* interface) -> bool {
   if(auto name = document["system/cpu/rom/name"].text()) {
     if(auto fp = platform->open(ID::System, name, File::Read, File::Required)) {
       fp->read(bios.data, bios.size);
-    }
+    } else return false;
   }
 
   if(!cartridge.load()) return false;
diff --git a/higan/ms/cartridge/cartridge.cpp b/higan/ms/cartridge/cartridge.cpp
index 620fb395..f04f8b80 100644
--- a/higan/ms/cartridge/cartridge.cpp
+++ b/higan/ms/cartridge/cartridge.cpp
@@ -9,6 +9,13 @@ Cartridge cartridge;
 auto Cartridge::load() -> bool {
   information = {};
 
+  if(Model::ColecoVision()) {
+    if(auto loaded = platform->load(ID::ColecoVision, "ColecoVision", "cv", {"NTSC", "PAL"})) {
+      information.pathID = loaded.pathID;
+      information.region = loaded.option;
+    } else return false;
+  }
+
   if(Model::SG1000()) {
     if(auto loaded = platform->load(ID::SG1000, "SG-1000", "sg1000", {"NTSC", "PAL"})) {
       information.pathID = loaded.pathID;
diff --git a/higan/ms/cartridge/cartridge.hpp b/higan/ms/cartridge/cartridge.hpp
index fef917aa..59526107 100644
--- a/higan/ms/cartridge/cartridge.hpp
+++ b/higan/ms/cartridge/cartridge.hpp
@@ -18,7 +18,7 @@ struct Cartridge {
   //serialization.cpp
   auto serialize(serializer&) -> void;
 
-private:
+//private:
   struct Information {
     uint pathID = 0;
     string region;
diff --git a/higan/ms/controller/controller.cpp b/higan/ms/controller/controller.cpp
index 618b96fb..ec39cfa4 100644
--- a/higan/ms/controller/controller.cpp
+++ b/higan/ms/controller/controller.cpp
@@ -4,6 +4,7 @@ namespace MasterSystem {
 
 ControllerPort controllerPort1;
 ControllerPort controllerPort2;
+#include "numberpad/numberpad.cpp"
 #include "gamepad/gamepad.cpp"
 
 Controller::Controller(uint port) : port(port) {
@@ -36,6 +37,7 @@ auto ControllerPort::connect(uint deviceID) -> void {
 
   switch(deviceID) { default:
   case ID::Device::None: device = new Controller(port); break;
+  case ID::Device::NumberPad: device = new NumberPad(port); break;
   case ID::Device::Gamepad: device = new Gamepad(port); break;
   }
 
diff --git a/higan/ms/controller/controller.hpp b/higan/ms/controller/controller.hpp
index 9007b81c..59719515 100644
--- a/higan/ms/controller/controller.hpp
+++ b/higan/ms/controller/controller.hpp
@@ -5,7 +5,8 @@ struct Controller : Thread {
   static auto Enter() -> void;
   auto main() -> void;
 
-  virtual auto readData() -> uint7 { return 0x7f; }
+  virtual auto readData() -> uint8 { return 0xff; }
+  virtual auto writeData(uint8 data) -> void {}
 
   const uint port;
 };
@@ -24,4 +25,5 @@ struct ControllerPort {
 extern ControllerPort controllerPort1;
 extern ControllerPort controllerPort2;
 
+#include "numberpad/numberpad.hpp"
 #include "gamepad/gamepad.hpp"
diff --git a/higan/ms/controller/gamepad/gamepad.cpp b/higan/ms/controller/gamepad/gamepad.cpp
index 5e554557..cf12881d 100644
--- a/higan/ms/controller/gamepad/gamepad.cpp
+++ b/higan/ms/controller/gamepad/gamepad.cpp
@@ -1,8 +1,8 @@
 Gamepad::Gamepad(uint port) : Controller(port) {
 }
 
-auto Gamepad::readData() -> uint7 {
-  uint7 data = 0x7f;
+auto Gamepad::readData() -> uint8 {
+  uint8 data = 0xff;
   data.bit(0) = !platform->inputPoll(port, ID::Device::Gamepad, Up);
   data.bit(1) = !platform->inputPoll(port, ID::Device::Gamepad, Down);
   data.bit(2) = !platform->inputPoll(port, ID::Device::Gamepad, Left);
diff --git a/higan/ms/controller/gamepad/gamepad.hpp b/higan/ms/controller/gamepad/gamepad.hpp
index 91babbd8..9be9c55c 100644
--- a/higan/ms/controller/gamepad/gamepad.hpp
+++ b/higan/ms/controller/gamepad/gamepad.hpp
@@ -5,5 +5,5 @@ struct Gamepad : Controller {
 
   Gamepad(uint port);
 
-  auto readData() -> uint7 override;
+  auto readData() -> uint8 override;
 };
diff --git a/higan/ms/controller/numberpad/numberpad.cpp b/higan/ms/controller/numberpad/numberpad.cpp
new file mode 100644
index 00000000..6512c2a6
--- /dev/null
+++ b/higan/ms/controller/numberpad/numberpad.cpp
@@ -0,0 +1,33 @@
+NumberPad::NumberPad(uint port) : Controller(port) {
+}
+
+auto NumberPad::readData() -> uint8 {
+  const uint device = ID::Device::NumberPad;
+  uint8 data = 0xff;
+  if(select == 0) {
+         if(platform->inputPoll(port, device, One  )) data.bits(0,3) = 0b1101;
+    else if(platform->inputPoll(port, device, Two  )) data.bits(0,3) = 0b0111;
+    else if(platform->inputPoll(port, device, Three)) data.bits(0,3) = 0b1100;
+    else if(platform->inputPoll(port, device, Four )) data.bits(0,3) = 0b0010;
+    else if(platform->inputPoll(port, device, Five )) data.bits(0,3) = 0b0011;
+    else if(platform->inputPoll(port, device, Six  )) data.bits(0,3) = 0b1110;
+    else if(platform->inputPoll(port, device, Seven)) data.bits(0,3) = 0b0101;
+    else if(platform->inputPoll(port, device, Eight)) data.bits(0,3) = 0b0001;
+    else if(platform->inputPoll(port, device, Nine )) data.bits(0,3) = 0b1011;
+    else if(platform->inputPoll(port, device, Star )) data.bits(0,3) = 0b1001;
+    else if(platform->inputPoll(port, device, Zero )) data.bits(0,3) = 0b1010;
+    else if(platform->inputPoll(port, device, Pound)) data.bits(0,3) = 0b0110;
+    data.bit(6) = !platform->inputPoll(port, device, R);
+  } else {
+    data.bit(0) = !platform->inputPoll(port, device, Up);
+    data.bit(1) = !platform->inputPoll(port, device, Right);
+    data.bit(2) = !platform->inputPoll(port, device, Down);
+    data.bit(3) = !platform->inputPoll(port, device, Left);
+    data.bit(6) = !platform->inputPoll(port, device, L);
+  }
+  return data;
+}
+
+auto NumberPad::writeData(uint8 data) -> void {
+  select = data.bit(0);
+}
diff --git a/higan/ms/controller/numberpad/numberpad.hpp b/higan/ms/controller/numberpad/numberpad.hpp
new file mode 100644
index 00000000..3394bea2
--- /dev/null
+++ b/higan/ms/controller/numberpad/numberpad.hpp
@@ -0,0 +1,17 @@
+struct NumberPad : Controller {
+  enum : uint {
+    Up, Down, Left, Right,
+    L, R,
+    One, Two, Three,
+    Four, Five, Six,
+    Seven, Eight, Nine,
+    Star, Zero, Pound,
+  };
+
+  NumberPad(uint port);
+
+  auto readData() -> uint8;
+  auto writeData(uint8 data) -> void;
+
+  uint1 select;
+};
diff --git a/higan/ms/cpu/coleco.cpp b/higan/ms/cpu/coleco.cpp
new file mode 100644
index 00000000..1e5d1b13
--- /dev/null
+++ b/higan/ms/cpu/coleco.cpp
@@ -0,0 +1,33 @@
+auto CPU::readColeco(uint16 address) -> uint8 {
+  uint8 data = 0xff;
+  if(address >= 0x0000 && address <= 0x1fff && coleco.replaceBIOS) return expansion.read(address);
+  if(address >= 0x2000 && address <= 0x7fff && coleco.replaceRAM ) return expansion.read(address);
+  if(address >= 0x0000 && address <= 0x1fff) return system.bios[address & 0x1fff];
+  if(address >= 0x6000 && address <= 0x7fff) return ram.read(address - 0x6000);
+  if(address >= 0x8000 && address <= 0xffff) return cartridge.rom.read(address - 0x8000);
+  return data;
+}
+
+auto CPU::writeColeco(uint16 address, uint8 data) -> void {
+  if(address >= 0x0000 && address <= 0x1fff && coleco.replaceBIOS) return expansion.write(address, data);
+  if(address >= 0x2000 && address <= 0x7fff && coleco.replaceRAM)  return expansion.write(address, data);
+  if(address >= 0x6000 && address <= 0x7fff) return ram.write(address - 0x6000, data);
+  if(address >= 0x8000 && address <= 0xffff) return;
+}
+
+auto CPU::inColeco(uint8 address) -> uint8 {
+  uint8 data = 0xff;
+  if(address >= 0xa0 && address <= 0xbf) return !address.bit(0) ? vdp.data() : vdp.status();
+  if(address >= 0xe0 && address <= 0xff && address.bit(1) == 0) return controllerPort1.device->readData();
+  if(address >= 0xe0 && address <= 0xff && address.bit(1) == 1) return controllerPort2.device->readData();
+  return data;
+}
+
+auto CPU::outColeco(uint8 address, uint8 data) -> void {
+  if(address == 0x53) coleco.replaceRAM  = data.bit(0);
+  if(address == 0x7f) coleco.replaceBIOS = data.bit(1);
+  if(address >= 0x80 && address <= 0x9f) controllerPort1.device->writeData(0), controllerPort2.device->writeData(0);
+  if(address >= 0xa0 && address <= 0xbf) return !address.bit(0) ? vdp.data(data) : vdp.control(data);
+  if(address >= 0xc0 && address <= 0xdf) controllerPort1.device->writeData(1), controllerPort2.device->writeData(1);
+  if(address >= 0xe0 && address <= 0xff) return psg.write(data);
+}
diff --git a/higan/ms/cpu/cpu.cpp b/higan/ms/cpu/cpu.cpp
index 6e023c03..cbc74960 100644
--- a/higan/ms/cpu/cpu.cpp
+++ b/higan/ms/cpu/cpu.cpp
@@ -3,7 +3,8 @@
 namespace MasterSystem {
 
 CPU cpu;
-#include "bus.cpp"
+#include "coleco.cpp"
+#include "sega.cpp"
 #include "serialization.cpp"
 
 auto CPU::Enter() -> void {
@@ -60,14 +61,36 @@ auto CPU::setINT(bool value) -> void {
   state.intLine = value;
 }
 
+auto CPU::read(uint16 address) -> uint8 {
+  return Model::ColecoVision() ? readColeco(address) : readSega(address);
+}
+
+auto CPU::write(uint16 address, uint8 data) -> void {
+  return Model::ColecoVision() ? writeColeco(address, data) : writeSega(address, data);
+}
+
+auto CPU::in(uint8 address) -> uint8 {
+  return Model::ColecoVision() ? inColeco(address) : inSega(address);
+}
+
+auto CPU::out(uint8 address, uint8 data) -> void {
+  return Model::ColecoVision() ? outColeco(address, data) : outSega(address, data);
+}
+
 auto CPU::power() -> void {
   Z80::bus = this;
   Z80::power();
   create(CPU::Enter, system.colorburst());
 
+  if(Model::ColecoVision()) ram.allocate(0x0400), expansion.allocate(0x1000);
+  if(Model::SG1000())       ram.allocate(0x0400);
+  if(Model::SC3000())       ram.allocate(0x0800);
+  if(Model::MasterSystem()) ram.allocate(0x2000);
+  if(Model::GameGear())     ram.allocate(0x2000);
+
   r.pc = 0x0000;  //reset vector address
-
   state = {};
+  coleco = {};
 }
 
 }
diff --git a/higan/ms/cpu/cpu.hpp b/higan/ms/cpu/cpu.hpp
index 4fd1c0cf..024a3e49 100644
--- a/higan/ms/cpu/cpu.hpp
+++ b/higan/ms/cpu/cpu.hpp
@@ -11,14 +11,27 @@ struct CPU : Processor::Z80, Processor::Z80::Bus, Thread {
   auto setNMI(bool value) -> void;
   auto setINT(bool value) -> void;
 
+  auto read(uint16 address) -> uint8 override;
+  auto write(uint16 address, uint8 data) -> void override;
+
+  auto in(uint8 address) -> uint8 override;
+  auto out(uint8 address, uint8 data) -> void override;
+
   auto power() -> void;
 
-  //bus.cpp
-  auto read(uint16 addr) -> uint8 override;
-  auto write(uint16 addr, uint8 data) -> void override;
+  //coleco.cpp
+  auto readColeco(uint16 address) -> uint8;
+  auto writeColeco(uint16 address, uint8 data) -> void;
 
-  auto in(uint8 addr) -> uint8 override;
-  auto out(uint8 addr, uint8 data) -> void override;
+  auto inColeco(uint8 address) -> uint8;
+  auto outColeco(uint8 address, uint8 data) -> void;
+
+  //sega.cpp
+  auto readSega(uint16 address) -> uint8;
+  auto writeSega(uint16 address, uint8 data) -> void;
+
+  auto inSega(uint8 address) -> uint8;
+  auto outSega(uint8 address, uint8 data) -> void;
 
   //serialization.cpp
   auto serialize(serializer&) -> void;
@@ -26,12 +39,18 @@ struct CPU : Processor::Z80, Processor::Z80::Bus, Thread {
   vector<Thread*> peripherals;
 
 private:
-  uint8 ram[8 * 1024];
+  Emulator::WritableMemory<uint8> ram;
+  Emulator::WritableMemory<uint8> expansion;
 
   struct State {
     bool nmiLine = 0;
     bool intLine = 0;
   } state;
+
+  struct Coleco {
+    uint1 replaceBIOS;
+    uint1 replaceRAM;
+  } coleco;
 };
 
 extern CPU cpu;
diff --git a/higan/ms/cpu/bus.cpp b/higan/ms/cpu/sega.cpp
similarity index 83%
rename from higan/ms/cpu/bus.cpp
rename to higan/ms/cpu/sega.cpp
index 45dbf6d9..cac07d30 100644
--- a/higan/ms/cpu/bus.cpp
+++ b/higan/ms/cpu/sega.cpp
@@ -1,27 +1,22 @@
-auto CPU::read(uint16 addr) -> uint8 {
-  uint8 data;
-
-  if(auto result = cartridge.read(addr)) {
+auto CPU::readSega(uint16 address) -> uint8 {
+  uint8 data = 0xff;
+  if(auto result = cartridge.read(address)) {
     data = result();
-  } else if(addr >= 0xc000) {
-    data = ram[addr & 0x1fff];
+  } else if(address >= 0xc000) {
+    data = ram.read(address);
   }
-
-  if(auto result = cheat.find(addr, data)) {
-    data = result();
-  }
-
+  if(auto result = cheat.find(address, data)) data = result();
   return data;
 }
 
-auto CPU::write(uint16 addr, uint8 data) -> void {
-  if(cartridge.write(addr, data)) {
-  } else if(addr >= 0xc000) {
-    ram[addr & 0x1fff] = data;
+auto CPU::writeSega(uint16 address, uint8 data) -> void {
+  if(cartridge.write(address, data)) {
+  } else if(address >= 0xc000) {
+    ram.write(address, data);
   }
 }
 
-auto CPU::in(uint8 addr) -> uint8 {
+auto CPU::inSega(uint8 addr) -> uint8 {
   switch(addr >> 6) {
 
   case 0: {
@@ -87,7 +82,7 @@ auto CPU::in(uint8 addr) -> uint8 {
   return 0xff;
 }
 
-auto CPU::out(uint8 addr, uint8 data) -> void {
+auto CPU::outSega(uint8 addr, uint8 data) -> void {
   if(addr == 0x06) {
     if(Model::GameGear()) return psg.balance(data);
   }
diff --git a/higan/ms/cpu/serialization.cpp b/higan/ms/cpu/serialization.cpp
index e29b80e4..db33dc18 100644
--- a/higan/ms/cpu/serialization.cpp
+++ b/higan/ms/cpu/serialization.cpp
@@ -3,7 +3,7 @@ auto CPU::serialize(serializer& s) -> void {
   Z80::Bus::serialize(s);
   Thread::serialize(s);
 
-  s.array(ram);
+  s.array(ram.data(), ram.size());
 
   s.integer(state.nmiLine);
   s.integer(state.intLine);
diff --git a/higan/ms/interface/colecovision.cpp b/higan/ms/interface/colecovision.cpp
new file mode 100644
index 00000000..110c4d1b
--- /dev/null
+++ b/higan/ms/interface/colecovision.cpp
@@ -0,0 +1,104 @@
+auto ColecoVisionInterface::information() -> Information {
+  Information information;
+  information.manufacturer = "Coleco Industries";
+  information.name         = "ColecoVision";
+  information.extension    = "cv";
+  return information;
+}
+
+auto ColecoVisionInterface::displays() -> vector<Display> {
+  Display display;
+  display.type = Display::Type::CRT;
+  display.colors = 1 << 4;
+  display.width = 256;
+  display.height = 192;
+  display.internalWidth = 256;
+  display.internalHeight = 192;
+  display.aspectCorrection = 1.0;
+  if(Region::NTSC()) display.refreshRate = (system.colorburst() * 15.0 / 5.0) / (262.0 * 684.0);
+  if(Region::PAL())  display.refreshRate = (system.colorburst() * 15.0 / 5.0) / (312.0 * 684.0);
+  return {display};
+}
+
+auto ColecoVisionInterface::color(uint32 color) -> uint64 {
+  switch(color.bits(0,3)) {
+  case  0: return 0x0000'0000'0000ull;  //transparent
+  case  1: return 0x0000'0000'0000ull;  //black
+  case  2: return 0x2121'c8c8'4242ull;  //medium green
+  case  3: return 0x5e5e'dcdc'7878ull;  //light green
+  case  4: return 0x5454'5555'ededull;  //dark blue
+  case  5: return 0x7d7d'7676'fcfcull;  //light blue
+  case  6: return 0xd4d4'5252'4d4dull;  //dark red
+  case  7: return 0x4242'ebeb'f5f5ull;  //cyan
+  case  8: return 0xfcfc'5555'5454ull;  //medium red
+  case  9: return 0xffff'7979'7878ull;  //light red
+  case 10: return 0xd4d4'c1c1'5454ull;  //dark yellow
+  case 11: return 0xe6e6'cece'8080ull;  //light yellow
+  case 12: return 0x2121'b0b0'3b3bull;  //dark green
+  case 13: return 0xc9c9'5b5b'babaull;  //magenta
+  case 14: return 0xcccc'cccc'ccccull;  //gray
+  case 15: return 0xffff'ffff'ffffull;  //white
+  }
+  unreachable;
+}
+
+auto ColecoVisionInterface::ports() -> vector<Port> { return {
+  {ID::Port::Controller1, "Controller Port 1"},
+  {ID::Port::Controller2, "Controller Port 2"}};
+}
+
+auto ColecoVisionInterface::devices(uint port) -> vector<Device> {
+  if(port == ID::Port::Controller1) return {
+    {ID::Device::None, "None"},
+    {ID::Device::NumberPad, "Gamepad"}
+  };
+
+  if(port == ID::Port::Controller2) return {
+    {ID::Device::None, "None"},
+    {ID::Device::NumberPad, "Gamepad"}
+  };
+
+  return {};
+}
+
+auto ColecoVisionInterface::inputs(uint device) -> vector<Input> {
+  using Type = Input::Type;
+
+  if(device == ID::Device::NumberPad) return {
+    {Type::Hat, "Up"},
+    {Type::Hat, "Down"},
+    {Type::Hat, "Left"},
+    {Type::Hat, "Right"},
+    {Type::Button, "L"},
+    {Type::Button, "R"},
+    {Type::Button, "1"},
+    {Type::Button, "2"},
+    {Type::Button, "3"},
+    {Type::Button, "4"},
+    {Type::Button, "5"},
+    {Type::Button, "6"},
+    {Type::Button, "7"},
+    {Type::Button, "8"},
+    {Type::Button, "9"},
+    {Type::Button, "Star"},
+    {Type::Button, "0"},
+    {Type::Button, "Pound"}
+  };
+
+  return {};
+}
+
+auto ColecoVisionInterface::load() -> bool {
+  return system.load(this, System::Model::ColecoVision);
+}
+
+auto ColecoVisionInterface::connected(uint port) -> uint {
+  if(port == ID::Port::Controller1) return settings.controllerPort1;
+  if(port == ID::Port::Controller2) return settings.controllerPort2;
+  return 0;
+}
+
+auto ColecoVisionInterface::connect(uint port, uint device) -> void {
+  if(port == ID::Port::Controller1) controllerPort1.connect(settings.controllerPort1 = device);
+  if(port == ID::Port::Controller2) controllerPort2.connect(settings.controllerPort2 = device);
+}
diff --git a/higan/ms/interface/interface.cpp b/higan/ms/interface/interface.cpp
index 291ac599..835f3614 100644
--- a/higan/ms/interface/interface.cpp
+++ b/higan/ms/interface/interface.cpp
@@ -3,6 +3,7 @@
 namespace MasterSystem {
 
 Settings settings;
+#include "colecovision.cpp"
 #include "sg-1000.cpp"
 #include "sc-3000.cpp"
 #include "master-system.cpp"
diff --git a/higan/ms/interface/interface.hpp b/higan/ms/interface/interface.hpp
index c1a42546..1b2484cb 100644
--- a/higan/ms/interface/interface.hpp
+++ b/higan/ms/interface/interface.hpp
@@ -5,6 +5,7 @@ namespace MasterSystem {
 struct ID {
   enum : uint {
     System,
+    ColecoVision,
     SG1000,
     SC3000,
     MasterSystem,
@@ -23,6 +24,7 @@ struct ID {
     SC3000Controls,
     MasterSystemControls,
     GameGearControls,
+    NumberPad,
     Gamepad,
   };};
 };
@@ -48,6 +50,22 @@ struct Interface : Emulator::Interface {
   auto set(const string& name, const any& value) -> bool override;
 };
 
+struct ColecoVisionInterface : Interface {
+  auto information() -> Information override;
+
+  auto displays() -> vector<Display> override;
+  auto color(uint32 color) -> uint64 override;
+
+  auto ports() -> vector<Port> override;
+  auto devices(uint port) -> vector<Device> override;
+  auto inputs(uint device) -> vector<Input> override;
+
+  auto load() -> bool override;
+
+  auto connected(uint port) -> uint override;
+  auto connect(uint port, uint device) -> void override;
+};
+
 struct SG1000Interface : Interface {
   auto information() -> Information override;
 
diff --git a/higan/ms/ms.hpp b/higan/ms/ms.hpp
index 2fdced1a..9195c76b 100644
--- a/higan/ms/ms.hpp
+++ b/higan/ms/ms.hpp
@@ -6,6 +6,7 @@
 #include <emulator/emulator.hpp>
 #include <emulator/thread.hpp>
 #include <emulator/scheduler.hpp>
+#include <emulator/memory.hpp>
 #include <emulator/cheat.hpp>
 
 #include <processor/z80/z80.hpp>
@@ -30,6 +31,7 @@ namespace MasterSystem {
   };
 
   struct Model {
+    inline static auto ColecoVision() -> bool;
     inline static auto SG1000() -> bool;
     inline static auto SC3000() -> bool;
     inline static auto MasterSystem() -> bool;
diff --git a/higan/ms/system/system.cpp b/higan/ms/system/system.cpp
index c4a1d46c..4986e513 100644
--- a/higan/ms/system/system.cpp
+++ b/higan/ms/system/system.cpp
@@ -29,6 +29,13 @@ auto System::load(Emulator::Interface* interface, Model model) -> bool {
   } else return false;
 
   auto document = BML::unserialize(information.manifest);
+
+  if(MasterSystem::Model::ColecoVision()) {
+    if(auto fp = platform->open(ID::System, "bios.rom", File::Read, File::Required)) {
+      fp->read(bios, 0x2000);
+    } else return false;
+  }
+
   if(!cartridge.load()) return false;
 
   if(cartridge.region() == "NTSC") {
diff --git a/higan/ms/system/system.hpp b/higan/ms/system/system.hpp
index 57b4d28f..f8392774 100644
--- a/higan/ms/system/system.hpp
+++ b/higan/ms/system/system.hpp
@@ -1,5 +1,5 @@
 struct System {
-  enum class Model : uint { SG1000, SC3000, MasterSystem, GameGear };
+  enum class Model : uint { ColecoVision, SG1000, SC3000, MasterSystem, GameGear };
   enum class Region : uint { NTSC, PAL };
 
   auto loaded() const -> bool { return information.loaded; }
@@ -23,6 +23,8 @@ struct System {
   auto serializeAll(serializer&) -> void;
   auto serialize(serializer&) -> void;
 
+  uint8 bios[0x2000];
+
 private:
   Emulator::Interface* interface = nullptr;
 
@@ -38,6 +40,7 @@ private:
 
 extern System system;
 
+auto Model::ColecoVision() -> bool { return system.model() == System::Model::ColecoVision; }
 auto Model::SG1000() -> bool { return system.model() == System::Model::SG1000; }
 auto Model::SC3000() -> bool { return system.model() == System::Model::SC3000; }
 auto Model::MasterSystem() -> bool { return system.model() == System::Model::MasterSystem; }
diff --git a/higan/ms/vdp/background.cpp b/higan/ms/vdp/background.cpp
index f78897c9..b8800b5d 100644
--- a/higan/ms/vdp/background.cpp
+++ b/higan/ms/vdp/background.cpp
@@ -38,10 +38,10 @@ auto VDP::Background::graphics1(uint8 hoffset, uint9 voffset) -> void {
 
   uint8 color = vdp.vram[colorAddress];
   uint3 index = hoffset ^ 7;
-  if(vdp.vram[patternAddress].bit(index)) {
-    output.color = color.bits(4,7);
-  } else {
+  if(!vdp.vram[patternAddress].bit(index)) {
     output.color = color.bits(0,3);
+  } else {
+    output.color = color.bits(4,7);
   }
 }
 
@@ -67,12 +67,12 @@ auto VDP::Background::graphics2(uint8 hoffset, uint9 voffset) -> void {
   colorAddress.bit(13) = vdp.io.colorTableAddress.bit(7);
 
   uint8 colorMask = vdp.io.colorTableAddress.bits(0,6) << 1 | 1;
-  uint8 color = vdp.vram[colorAddress] & colorMask;
+  uint8 color = vdp.vram[colorAddress];
   uint3 index = hoffset ^ 7;
-  if(vdp.vram[patternAddress].bit(index)) {
-    output.color = color.bits(4,7);
-  } else {
+  if(!vdp.vram[patternAddress].bit(index)) {
     output.color = color.bits(0,3);
+  } else {
+    output.color = color.bits(4,7);
   }
 }
 
diff --git a/higan/ms/vdp/io.cpp b/higan/ms/vdp/io.cpp
index 36755065..a7a2d104 100644
--- a/higan/ms/vdp/io.cpp
+++ b/higan/ms/vdp/io.cpp
@@ -76,7 +76,7 @@ auto VDP::registerWrite(uint4 addr, uint8 data) -> void {
   case 0x0: {
     io.externalSync = data.bit(0);
     io.mode.bit(1) = data.bit(1);
-    io.mode.bit(3) = data.bit(2) & !Model::SG1000() & !Model::SC3000();
+    io.mode.bit(3) = data.bit(2) & !Model::ColecoVision() && !Model::SG1000() & !Model::SC3000();
     io.spriteShift = data.bit(3);
     io.lineInterrupts = data.bit(4);
     io.leftClip = data.bit(5);
diff --git a/higan/ms/vdp/vdp.cpp b/higan/ms/vdp/vdp.cpp
index a7077d6a..cf3b2cd5 100644
--- a/higan/ms/vdp/vdp.cpp
+++ b/higan/ms/vdp/vdp.cpp
@@ -72,7 +72,7 @@ auto VDP::step(uint clocks) -> void {
 }
 
 auto VDP::refresh() -> void {
-  if(Model::SG1000() || Model::SC3000()) {
+  if(Model::ColecoVision() || Model::SG1000() || Model::SC3000()) {
     uint32* screen = buffer;
     screen += 24 * 256;
     Emulator::video.refresh(screen, 256 * sizeof(uint32), 256, 192);
@@ -108,6 +108,8 @@ auto VDP::power() -> void {
   create(VDP::Enter, system.colorburst() * 15.0 / 5.0);
 
   memory::fill<uint32>(buffer, 256 * 264);
+  for(auto& byte : vram) byte = 0x00;
+  for(auto& byte : cram) byte = 0x00;
   io = {};
 
   background.power();
@@ -115,7 +117,7 @@ auto VDP::power() -> void {
 }
 
 auto VDP::palette(uint5 index) -> uint12 {
-  if(Model::SG1000() || Model::SC3000()) return index.bits(0,3);
+  if(Model::ColecoVision() || Model::SG1000() || Model::SC3000()) return index.bits(0,3);
   //Master System and Game Gear approximate TMS9918A colors by converting to RGB6 palette colors
   static uint6 palette[16] = {
     0x00, 0x00, 0x08, 0x0c, 0x10, 0x30, 0x01, 0x3c,
diff --git a/higan/msx/GNUmakefile b/higan/msx/GNUmakefile
new file mode 100644
index 00000000..e69fa78f
--- /dev/null
+++ b/higan/msx/GNUmakefile
@@ -0,0 +1,6 @@
+processors += z80
+
+objects += msx-interface msx-system
+
+obj/msx-interface.o: msx/interface/interface.cpp
+obj/msx-system.o:    msx/system/system.cpp
diff --git a/higan/msx/interface/interface.cpp b/higan/msx/interface/interface.cpp
new file mode 100644
index 00000000..c8d54fd6
--- /dev/null
+++ b/higan/msx/interface/interface.cpp
@@ -0,0 +1,107 @@
+#include <msx/msx.hpp>
+
+namespace MSX {
+
+auto Interface::information() -> Information {
+  Information information;
+  information.manufacturer = "";
+  information.name         = "MSX";
+  information.extension    = ".msx";
+  return information;
+}
+
+auto Interface::displays() -> vector<Display> {
+  Display display;
+  display.type   = Display::Type::CRT;
+  display.colors = 1 << 4;
+  display.width  = 256;
+  display.height = 192;
+  display.internalWidth  = 256;
+  display.internalHeight = 192;
+  display.aspectCorrection = 1.0;
+  display.refreshRate = 60.0;  //todo: PAL
+  return {display};
+}
+
+auto Interface::color(uint32 color) -> uint64 {
+  switch(color.bits(0,3)) {
+  }
+  return 0;
+}
+
+auto Interface::loaded() -> bool {
+  return false;
+}
+
+auto Interface::hashes() -> vector<string> {
+  return {};
+}
+
+auto Interface::manifests() -> vector<string> {
+  return {};
+}
+
+auto Interface::titles() -> vector<string> {
+  return {};
+}
+
+auto Interface::load() -> bool {
+  return false;
+}
+
+auto Interface::save() -> void {
+}
+
+auto Interface::unload() -> void {
+  save();
+}
+
+auto Interface::ports() -> vector<Port> { return {
+  {ID::Port::Controller1, "Controller Port 1"},
+  {ID::Port::Controller2, "Controller Port 2"}};
+}
+
+auto Interface::devices(uint port) -> vector<Device> {
+  if(port == ID::Port::Controller1) return {
+    {ID::Device::None,    "None"   },
+    {ID::Device::Gamepad, "Gamepad"}
+  };
+
+  if(port == ID::Port::Controller2) return {
+    {ID::Device::None,    "None"   },
+    {ID::Device::Gamepad, "Gamepad"}
+  };
+
+  return {};
+}
+
+auto Interface::inputs(uint device) -> vector<Input> {
+  using Type = Input::Type;
+
+  if(device == ID::Device::Gamepad) return {
+    {Type::Hat,    "Up"   },
+    {Type::Hat,    "Down" },
+    {Type::Hat,    "Left" },
+    {Type::Hat,    "Right"},
+    {Type::Button, "1"    },
+    {Type::Button, "2"    }
+  };
+
+  return {};
+}
+
+auto Interface::power() -> void {
+}
+
+auto Interface::run() -> void {
+}
+
+auto Interface::serialize() -> serializer {
+  return {};
+}
+
+auto Interface::unserialize(serializer& s) -> bool {
+  return false;
+}
+
+}
diff --git a/higan/msx/interface/interface.hpp b/higan/msx/interface/interface.hpp
new file mode 100644
index 00000000..ce8af658
--- /dev/null
+++ b/higan/msx/interface/interface.hpp
@@ -0,0 +1,52 @@
+#if defined(CORE_MSX)
+
+namespace MSX {
+
+struct ID {
+  enum : uint {
+    System,
+    MSX,
+    MSX2,
+    MSX2Plus,
+    MSXTurboR,
+  };
+
+  struct Port { enum : uint {
+    Controller1,
+    Controller2,
+  };};
+
+  struct Device { enum : uint {
+    None,
+    Gamepad,
+  };};
+};
+
+struct Interface : Emulator::Interface {
+  auto information() -> Information override;
+
+  auto displays() -> vector<Display> override;
+  auto color(uint32 color) -> uint64 override;
+
+  auto loaded() -> bool override;
+  auto hashes() -> vector<string> override;
+  auto manifests() -> vector<string> override;
+  auto titles() -> vector<string> override;
+  auto load() -> bool override;
+  auto save() -> void override;
+  auto unload() -> void override;
+
+  auto ports() -> vector<Port> override;
+  auto devices(uint port) -> vector<Device> override;
+  auto inputs(uint device) -> vector<Input> override;
+
+  auto power() -> void override;
+  auto run() -> void override;
+
+  auto serialize() -> serializer override;
+  auto unserialize(serializer&) -> bool override;
+};
+
+}
+
+#endif
diff --git a/higan/msx/msx.hpp b/higan/msx/msx.hpp
new file mode 100644
index 00000000..5c3f34d6
--- /dev/null
+++ b/higan/msx/msx.hpp
@@ -0,0 +1,47 @@
+#pragma once
+
+//license: GPLv3
+//started: ...
+
+#include <emulator/emulator.hpp>
+#include <emulator/thread.hpp>
+#include <emulator/scheduler.hpp>
+#include <emulator/cheat.hpp>
+
+#include <processor/z80/z80.hpp>
+
+namespace MSX {
+  #define platform Emulator::platform
+  namespace File = Emulator::File;
+  using Scheduler = Emulator::Scheduler;
+  using Cheat = Emulator::Cheat;
+  extern Scheduler scheduler;
+  extern Cheat cheat;
+
+  struct Thread : Emulator::Thread {
+    auto create(auto (*entrypoint)() -> void, double frequency) -> void {
+      Emulator::Thread::create(entrypoint, frequency);
+      scheduler.append(*this);
+    }
+
+    inline auto synchronize(Thread& thread) -> void {
+      if(clock() >= thread.clock()) scheduler.resume(thread);
+    }
+  };
+
+  struct Model {
+    inline static auto MSX() -> bool;
+    inline static auto MSX2() -> bool;
+    inline static auto MSX2Plus() -> bool;
+    inline static auto MSXTurboR() -> bool;
+  };
+
+  struct Region {
+    inline static auto NTSC() -> bool;
+    inline static auto PAL() -> bool;
+  };
+
+  #include <msx/system/system.hpp>
+}
+
+#include <msx/interface/interface.hpp>
diff --git a/higan/msx/system/system.cpp b/higan/msx/system/system.cpp
new file mode 100644
index 00000000..d3d62a36
--- /dev/null
+++ b/higan/msx/system/system.cpp
@@ -0,0 +1,9 @@
+#include <msx/msx.hpp>
+
+namespace MSX {
+
+System system;
+Scheduler scheduler;
+Cheat cheat;
+
+}
diff --git a/higan/msx/system/system.hpp b/higan/msx/system/system.hpp
new file mode 100644
index 00000000..3dcf5e76
--- /dev/null
+++ b/higan/msx/system/system.hpp
@@ -0,0 +1,25 @@
+struct System {
+  enum class Model : uint { MSX, MSX2, MSX2Plus, MSXTurboR };
+  enum class Region : uint { NTSC, PAL };
+
+  auto loaded() const -> bool { return information.loaded; }
+  auto model() const -> Model { return information.model; }
+  auto region() const -> Region { return information.region; }
+
+  struct Information {
+    string manifest;
+    bool loaded = false;
+    Model model = Model::MSX;
+    Region region = Region::NTSC;
+  } information;
+};
+
+extern System system;
+
+auto Model::MSX() -> bool { return system.model() == System::Model::MSX; }
+auto Model::MSX2() -> bool { return system.model() == System::Model::MSX2; }
+auto Model::MSX2Plus() -> bool { return system.model() == System::Model::MSX2Plus; }
+auto Model::MSXTurboR() -> bool { return system.model() == System::Model::MSXTurboR; }
+
+auto Region::NTSC() -> bool { return system.region() == System::Region::NTSC; }
+auto Region::PAL() -> bool { return system.region() == System::Region::PAL; }
diff --git a/higan/ngp/GNUmakefile b/higan/ngp/GNUmakefile
new file mode 100644
index 00000000..120852f9
--- /dev/null
+++ b/higan/ngp/GNUmakefile
@@ -0,0 +1,6 @@
+processors += z80
+
+objects += ngp-interface ngp-system
+
+obj/ngp-interface.o: ngp/interface/interface.cpp
+obj/ngp-system.o:    ngp/system/system.cpp
diff --git a/higan/ngp/interface/interface.cpp b/higan/ngp/interface/interface.cpp
new file mode 100644
index 00000000..9947836c
--- /dev/null
+++ b/higan/ngp/interface/interface.cpp
@@ -0,0 +1,92 @@
+#include <ngp/ngp.hpp>
+
+namespace NeoGeoPocket {
+
+#include "neo-geo-pocket.cpp"
+#include "neo-geo-pocket-color.cpp"
+
+//todo: add correct values
+auto Interface::displays() -> vector<Display> {
+  Display display;
+  display.type   = Display::Type::LCD;
+  display.colors = 1;
+  display.width  = 320;
+  display.height = 240;
+  display.internalWidth  = 320;
+  display.internalHeight = 240;
+  display.aspectCorrection = 1.0;
+  display.refreshRate = 60.0;
+  return {display};
+}
+
+auto Interface::color(uint32 color) -> uint64 {
+  return 0;
+}
+
+auto Interface::loaded() -> bool {
+  return false;
+}
+
+auto Interface::hashes() -> vector<string> {
+  return {};
+}
+
+auto Interface::manifests() -> vector<string> {
+  return {};
+}
+
+auto Interface::titles() -> vector<string> {
+  return {};
+}
+
+auto Interface::load() -> bool {
+  return false;
+}
+
+auto Interface::save() -> void {
+}
+
+auto Interface::unload() -> void {
+  save();
+}
+
+auto Interface::ports() -> vector<Port> { return {
+  {ID::Port::Hardware, "Hardware"}};
+}
+
+auto Interface::devices(uint port) -> vector<Device> {
+  if(port == ID::Port::Hardware) return {
+    {ID::Device::Controls, "Controls"}
+  };
+
+  return {};
+}
+
+auto Interface::inputs(uint device) -> vector<Input> {
+  using Type = Input::Type;
+
+  if(device == ID::Device::Controls) return {
+    {Type::Hat, "Up"   },
+    {Type::Hat, "Down" },
+    {Type::Hat, "Left" },
+    {Type::Hat, "Right"}
+  };
+
+  return {};
+}
+
+auto Interface::power() -> void {
+}
+
+auto Interface::run() -> void {
+}
+
+auto Interface::serialize() -> serializer {
+  return {};
+}
+
+auto Interface::unserialize(serializer& s) -> bool {
+  return false;
+}
+
+}
diff --git a/higan/ngp/interface/interface.hpp b/higan/ngp/interface/interface.hpp
new file mode 100644
index 00000000..506283cc
--- /dev/null
+++ b/higan/ngp/interface/interface.hpp
@@ -0,0 +1,54 @@
+#if defined(CORE_NGP)
+
+namespace NeoGeoPocket {
+
+struct ID {
+  enum : uint {
+    System,
+    NeoGeoPocket,
+    NeoGeoPocketColor,
+  };
+
+  struct Port { enum : uint {
+    Hardware,
+  };};
+
+  struct Device { enum : uint {
+    Controls,
+  };};
+};
+
+struct Interface : Emulator::Interface {
+  auto displays() -> vector<Display> override;
+  auto color(uint32 color) -> uint64 override;
+
+  auto loaded() -> bool override;
+  auto hashes() -> vector<string> override;
+  auto manifests() -> vector<string> override;
+  auto titles() -> vector<string> override;
+  auto load() -> bool override;
+  auto save() -> void override;
+  auto unload() -> void override;
+
+  auto ports() -> vector<Port> override;
+  auto devices(uint port) -> vector<Device> override;
+  auto inputs(uint device) -> vector<Input> override;
+
+  auto power() -> void override;
+  auto run() -> void override;
+
+  auto serialize() -> serializer override;
+  auto unserialize(serializer&) -> bool override;
+};
+
+struct NeoGeoPocketInterface : Interface {
+  auto information() -> Information override;
+};
+
+struct NeoGeoPocketColorInterface : Interface {
+  auto information() -> Information override;
+};
+
+}
+
+#endif
diff --git a/higan/ngp/interface/neo-geo-pocket-color.cpp b/higan/ngp/interface/neo-geo-pocket-color.cpp
new file mode 100644
index 00000000..f5427c64
--- /dev/null
+++ b/higan/ngp/interface/neo-geo-pocket-color.cpp
@@ -0,0 +1,7 @@
+auto NeoGeoPocketColorInterface::information() -> Information {
+  Information information;
+  information.manufacturer = "SNK";
+  information.name         = "Neo Geo Pocket Color";
+  information.extension    = "ngpc";
+  return information;
+}
diff --git a/higan/ngp/interface/neo-geo-pocket.cpp b/higan/ngp/interface/neo-geo-pocket.cpp
new file mode 100644
index 00000000..46619ba0
--- /dev/null
+++ b/higan/ngp/interface/neo-geo-pocket.cpp
@@ -0,0 +1,7 @@
+auto NeoGeoPocketInterface::information() -> Information {
+  Information information;
+  information.manufacturer = "SNK";
+  information.name         = "Neo Geo Pocket";
+  information.extension    = "ngp";
+  return information;
+}
diff --git a/higan/ngp/ngp.hpp b/higan/ngp/ngp.hpp
new file mode 100644
index 00000000..654c6488
--- /dev/null
+++ b/higan/ngp/ngp.hpp
@@ -0,0 +1,40 @@
+#pragma once
+
+//license: GPLv3
+//started: ...
+
+#include <emulator/emulator.hpp>
+#include <emulator/thread.hpp>
+#include <emulator/scheduler.hpp>
+#include <emulator/cheat.hpp>
+
+#include <processor/z80/z80.hpp>
+
+namespace NeoGeoPocket {
+  #define platform Emulator::platform
+  namespace File = Emulator::File;
+  using Scheduler = Emulator::Scheduler;
+  using Cheat = Emulator::Cheat;
+  extern Scheduler scheduler;
+  extern Cheat cheat;
+
+  struct Thread : Emulator::Thread {
+    auto create(auto (*entrypoint)() -> void, double frequency) -> void {
+      Emulator::Thread::create(entrypoint, frequency);
+      scheduler.append(*this);
+    }
+
+    inline auto synchronize(Thread& thread) -> void {
+      if(clock() >= thread.clock()) scheduler.resume(thread);
+    }
+  };
+
+  struct Model {
+    inline static auto NeoGeoPocket() -> bool;
+    inline static auto NeoGeoPocketColor() -> bool;
+  };
+
+  #include <ngp/system/system.hpp>
+}
+
+#include <ngp/interface/interface.hpp>
diff --git a/higan/ngp/system/system.cpp b/higan/ngp/system/system.cpp
new file mode 100644
index 00000000..6a58a809
--- /dev/null
+++ b/higan/ngp/system/system.cpp
@@ -0,0 +1,9 @@
+#include <ngp/ngp.hpp>
+
+namespace NeoGeoPocket {
+
+System system;
+Scheduler scheduler;
+Cheat cheat;
+
+}
diff --git a/higan/ngp/system/system.hpp b/higan/ngp/system/system.hpp
new file mode 100644
index 00000000..347fe32c
--- /dev/null
+++ b/higan/ngp/system/system.hpp
@@ -0,0 +1,17 @@
+struct System {
+  enum class Model : uint { NeoGeoPocket, NeoGeoPocketColor };
+
+  auto loaded() const -> bool { return information.loaded; }
+  auto model() const -> Model { return information.model; }
+
+  struct Information {
+    string manifest;
+    bool loaded = false;
+    Model model = Model::NeoGeoPocket;
+  } information;
+};
+
+extern System system;
+
+auto Model::NeoGeoPocket() -> bool { return system.model() == System::Model::NeoGeoPocket; }
+auto Model::NeoGeoPocketColor() -> bool { return system.model() == System::Model::NeoGeoPocketColor; }
diff --git a/higan/systems/ColecoVision.sys/manifest.bml b/higan/systems/ColecoVision.sys/manifest.bml
new file mode 100644
index 00000000..ab2c76fe
--- /dev/null
+++ b/higan/systems/ColecoVision.sys/manifest.bml
@@ -0,0 +1 @@
+system name:ColecoVision
diff --git a/higan/systems/MSX.sys/manifest.bml b/higan/systems/MSX.sys/manifest.bml
new file mode 100644
index 00000000..e14b5a67
--- /dev/null
+++ b/higan/systems/MSX.sys/manifest.bml
@@ -0,0 +1 @@
+system name:MSX
diff --git a/higan/systems/Neo Geo Pocket Color.sys/manifest.bml b/higan/systems/Neo Geo Pocket Color.sys/manifest.bml
new file mode 100644
index 00000000..a2d8bea4
--- /dev/null
+++ b/higan/systems/Neo Geo Pocket Color.sys/manifest.bml	
@@ -0,0 +1 @@
+system name:Neo Geo Pocket Color
diff --git a/higan/systems/Neo Geo Pocket.sys/manifest.bml b/higan/systems/Neo Geo Pocket.sys/manifest.bml
new file mode 100644
index 00000000..4f72276f
--- /dev/null
+++ b/higan/systems/Neo Geo Pocket.sys/manifest.bml	
@@ -0,0 +1 @@
+system name:Neo Geo Pocket
diff --git a/higan/target-bsnes/program/states.cpp b/higan/target-bsnes/program/states.cpp
index ea5c30c5..2fb00a73 100644
--- a/higan/target-bsnes/program/states.cpp
+++ b/higan/target-bsnes/program/states.cpp
@@ -63,7 +63,7 @@ auto Program::loadState(string filename) -> bool {
     if(filename != "Quick/Undo") saveUndoState();
     if(filename == "Quick/Undo") saveRedoState();
     auto serializerRLE = Decode::RLE<1>({memory.data() + 3 * sizeof(uint), memory.size() - 3 * sizeof(uint)});
-    serializer s{serializerRLE.data(), serializerRLE.size()};
+    serializer s{serializerRLE.data(), (uint)serializerRLE.size()};
     if(!emulator->unserialize(s)) return showMessage({"[", prefix, "] is in incompatible format"}), false;
     return showMessage({"Loaded [", prefix, "]"}), true;
   } else {
diff --git a/higan/target-higan/program/program.cpp b/higan/target-higan/program/program.cpp
index cb5caed0..5635b4cf 100644
--- a/higan/target-higan/program/program.cpp
+++ b/higan/target-higan/program/program.cpp
@@ -4,9 +4,11 @@
 #include <ms/interface/interface.hpp>
 #include <md/interface/interface.hpp>
 #include <pce/interface/interface.hpp>
+#include <msx/interface/interface.hpp>
 #include <gb/interface/interface.hpp>
 #include <gba/interface/interface.hpp>
 #include <ws/interface/interface.hpp>
+#include <ngp/interface/interface.hpp>
 #include "platform.cpp"
 #include "game.cpp"
 #include "state.cpp"
@@ -42,6 +44,12 @@ Program::Program(Arguments arguments) {
 #ifdef CORE_PCE
   emulators.append(new PCEngine::SuperGrafxInterface);
 #endif
+#ifdef CORE_MS
+  emulators.append(new MasterSystem::ColecoVisionInterface);
+#endif
+#ifdef CORE_MSX
+  emulators.append(new MSX::Interface);
+#endif
 #ifdef CORE_GB
   emulators.append(new GameBoy::GameBoyInterface);
 #endif
@@ -63,6 +71,12 @@ Program::Program(Arguments arguments) {
 #ifdef CORE_WS
   emulators.append(new WonderSwan::PocketChallengeV2Interface);
 #endif
+#ifdef CORE_NGP
+  emulators.append(new NeoGeoPocket::NeoGeoPocketInterface);
+#endif
+#ifdef CORE_NGP
+  emulators.append(new NeoGeoPocket::NeoGeoPocketColorInterface);
+#endif
 
   new Presentation;
   presentation->setVisible();
diff --git a/icarus/core/colecovision.cpp b/icarus/core/colecovision.cpp
new file mode 100644
index 00000000..2931afdb
--- /dev/null
+++ b/icarus/core/colecovision.cpp
@@ -0,0 +1,39 @@
+auto Icarus::colecoVisionManifest(string location) -> string {
+  vector<uint8_t> buffer;
+  concatenate(buffer, {location, "program.rom"});
+  return colecoVisionManifest(buffer, location);
+}
+
+auto Icarus::colecoVisionManifest(vector<uint8_t>& buffer, string location) -> string {
+  if(settings["icarus/UseDatabase"].boolean()) {
+    auto digest = Hash::SHA256(buffer).digest();
+    for(auto game : Database::ColecoVision.find("game")) {
+      if(game["sha256"].text() == digest) return BML::serialize(game);
+    }
+  }
+
+  if(settings["icarus/UseHeuristics"].boolean()) {
+    Heuristics::ColecoVision game{buffer, location};
+    if(auto manifest = game.manifest()) return manifest;
+  }
+
+  return {};
+}
+
+auto Icarus::colecoVisionImport(vector<uint8_t>& buffer, string location) -> string {
+  auto name = Location::prefix(location);
+  auto source = Location::path(location);
+  string target{settings["Library/Location"].text(), "ColecoVision/", name, ".cv/"};
+
+  auto manifest = colecoVisionManifest(buffer, location);
+  if(!manifest) return failure("failed to parse ROM image");
+
+  if(!create(target)) return failure("library path unwritable");
+  if(exists({source, name, ".sav"}) && !exists({target, "save.ram"})) {
+    copy({source, name, ".sav"}, {target, "save.ram"});
+  }
+
+  if(settings["icarus/CreateManifests"].boolean()) write({target, "manifest.bml"}, manifest);
+  write({target, "program.rom"}, buffer);
+  return success(target);
+}
diff --git a/icarus/core/core.cpp b/icarus/core/core.cpp
index 895e673e..b06d328a 100644
--- a/icarus/core/core.cpp
+++ b/icarus/core/core.cpp
@@ -7,6 +7,7 @@ Icarus::Icarus() {
   Database::MegaDrive = BML::unserialize(string::read(locate("Database/Mega Drive.bml")));
   Database::PCEngine = BML::unserialize(string::read(locate("Database/PC Engine.bml")));
   Database::SuperGrafx = BML::unserialize(string::read(locate("Database/SuperGrafx.bml")));
+  Database::ColecoVision = BML::unserialize(string::read(locate("Database/ColecoVision.bml")));
   Database::MSX = BML::unserialize(string::read(locate("Database/MSX.bml")));
   Database::GameBoy = BML::unserialize(string::read(locate("Database/Game Boy.bml")));
   Database::GameBoyColor = BML::unserialize(string::read(locate("Database/Game Boy Color.bml")));
@@ -15,6 +16,8 @@ Icarus::Icarus() {
   Database::WonderSwan = BML::unserialize(string::read(locate("Database/WonderSwan.bml")));
   Database::WonderSwanColor = BML::unserialize(string::read(locate("Database/WonderSwan Color.bml")));
   Database::PocketChallengeV2 = BML::unserialize(string::read(locate("Database/Pocket Challenge V2.bml")));
+  Database::NeoGeoPocket = BML::unserialize(string::read(locate("Database/Neo Geo Pocket.bml")));
+  Database::NeoGeoPocketColor = BML::unserialize(string::read(locate("Database/Neo Geo Pocket Color.bml")));
   Database::BSMemory = BML::unserialize(string::read(locate("Database/BS Memory.bml")));
   Database::SufamiTurbo = BML::unserialize(string::read(locate("Database/Sufami Turbo.bml")));
 }
@@ -50,6 +53,7 @@ auto Icarus::manifest(string location) -> string {
   if(type == ".md") return megaDriveManifest(location);
   if(type == ".pce") return pcEngineManifest(location);
   if(type == ".sgx") return superGrafxManifest(location);
+  if(type == ".cv") return colecoVisionManifest(location);
   if(type == ".msx") return msxManifest(location);
   if(type == ".gb") return gameBoyManifest(location);
   if(type == ".gbc") return gameBoyColorManifest(location);
@@ -58,6 +62,8 @@ auto Icarus::manifest(string location) -> string {
   if(type == ".ws") return wonderSwanManifest(location);
   if(type == ".wsc") return wonderSwanColorManifest(location);
   if(type == ".pc2") return pocketChallengeV2Manifest(location);
+  if(type == ".ngp") return neoGeoPocketManifest(location);
+  if(type == ".ngpc") return neoGeoPocketColorManifest(location);
   if(type == ".bs") return bsMemoryManifest(location);
   if(type == ".st") return sufamiTurboManifest(location);
 
@@ -97,6 +103,7 @@ auto Icarus::import(string location) -> string {
   if(type == ".md" || type == ".smd" || type == ".gen") return megaDriveImport(buffer, location);
   if(type == ".pce") return pcEngineImport(buffer, location);
   if(type == ".sgx") return superGrafxImport(buffer, location);
+  if(type == ".cv" || type == ".col") return colecoVisionImport(buffer, location);
   if(type == ".msx") return msxImport(buffer, location);
   if(type == ".gb") return gameBoyImport(buffer, location);
   if(type == ".gbc") return gameBoyColorImport(buffer, location);
@@ -105,6 +112,8 @@ auto Icarus::import(string location) -> string {
   if(type == ".ws") return wonderSwanImport(buffer, location);
   if(type == ".wsc") return wonderSwanColorImport(buffer, location);
   if(type == ".pc2") return pocketChallengeV2Import(buffer, location);
+  if(type == ".ngp") return neoGeoPocketImport(buffer, location);
+  if(type == ".ngpc" || type == ".ngc") return neoGeoPocketColorImport(buffer, location);
   if(type == ".bs") return bsMemoryImport(buffer, location);
   if(type == ".st") return sufamiTurboImport(buffer, location);
 
diff --git a/icarus/core/core.hpp b/icarus/core/core.hpp
index e2ca8f19..bacbc16d 100644
--- a/icarus/core/core.hpp
+++ b/icarus/core/core.hpp
@@ -76,6 +76,11 @@ struct Icarus {
   auto superGrafxManifest(vector<uint8_t>& buffer, string location) -> string;
   auto superGrafxImport(vector<uint8_t>& buffer, string location) -> string;
 
+  //colecovision.cpp
+  auto colecoVisionManifest(string location) -> string;
+  auto colecoVisionManifest(vector<uint8_t>& buffer, string location) -> string;
+  auto colecoVisionImport(vector<uint8_t>& buffer, string location) -> string;
+
   //msx.cpp
   auto msxManifest(string location) -> string;
   auto msxManifest(vector<uint8_t>& buffer, string location) -> string;
@@ -116,6 +121,16 @@ struct Icarus {
   auto pocketChallengeV2Manifest(vector<uint8_t>& buffer, string location) -> string;
   auto pocketChallengeV2Import(vector<uint8_t>& buffer, string location) -> string;
 
+  //neo-geo-pocket.cpp
+  auto neoGeoPocketManifest(string location) -> string;
+  auto neoGeoPocketManifest(vector<uint8_t>& buffer, string location) -> string;
+  auto neoGeoPocketImport(vector<uint8_t>& buffer, string location) -> string;
+
+  //neo-geo-pocket-color.cpp
+  auto neoGeoPocketColorManifest(string location) -> string;
+  auto neoGeoPocketColorManifest(vector<uint8_t>& buffer, string location) -> string;
+  auto neoGeoPocketColorImport(vector<uint8_t>& buffer, string location) -> string;
+
   //bs-memory.cpp
   auto bsMemoryManifest(string location) -> string;
   auto bsMemoryManifest(vector<uint8_t>& buffer, string location) -> string;
@@ -140,6 +155,7 @@ namespace Database {
   Markup::Node MegaDrive;
   Markup::Node PCEngine;
   Markup::Node SuperGrafx;
+  Markup::Node ColecoVision;
   Markup::Node MSX;
   Markup::Node GameBoy;
   Markup::Node GameBoyColor;
@@ -148,6 +164,8 @@ namespace Database {
   Markup::Node WonderSwan;
   Markup::Node WonderSwanColor;
   Markup::Node PocketChallengeV2;
+  Markup::Node NeoGeoPocket;
+  Markup::Node NeoGeoPocketColor;
   Markup::Node BSMemory;
   Markup::Node SufamiTurbo;
 };
diff --git a/icarus/core/neo-geo-pocket-color.cpp b/icarus/core/neo-geo-pocket-color.cpp
new file mode 100644
index 00000000..749a372c
--- /dev/null
+++ b/icarus/core/neo-geo-pocket-color.cpp
@@ -0,0 +1,39 @@
+auto Icarus::neoGeoPocketColorManifest(string location) -> string {
+  vector<uint8_t> buffer;
+  concatenate(buffer, {location, "program.rom"});
+  return neoGeoPocketColorManifest(buffer, location);
+}
+
+auto Icarus::neoGeoPocketColorManifest(vector<uint8_t>& buffer, string location) -> string {
+  if(settings["icarus/UseDatabase"].boolean()) {
+    auto digest = Hash::SHA256(buffer).digest();
+    for(auto game : Database::NeoGeoPocketColor.find("game")) {
+      if(game["sha256"].text() == digest) return BML::serialize(game);
+    }
+  }
+
+  if(settings["icarus/UseHeuristics"].boolean()) {
+    Heuristics::NeoGeoPocketColor game{buffer, location};
+    if(auto manifest = game.manifest()) return manifest;
+  }
+
+  return {};
+}
+
+auto Icarus::neoGeoPocketColorImport(vector<uint8_t>& buffer, string location) -> string {
+  auto name = Location::prefix(location);
+  auto source = Location::path(location);
+  string target{settings["Library/Location"].text(), "Neo Geo Pocket Color/", name, ".ngpc/"};
+
+  auto manifest = neoGeoPocketColorManifest(buffer, location);
+  if(!manifest) return failure("failed to parse ROM image");
+
+  if(!create(target)) return failure("library path unwritable");
+  if(exists({source, name, ".sav"}) && !exists({target, "save.ram"})) {
+    copy({source, name, ".sav"}, {target, "save.ram"});
+  }
+
+  if(settings["icarus/CreateManifests"].boolean()) write({target, "manifest.bml"}, manifest);
+  write({target, "program.rom"}, buffer);
+  return success(target);
+}
diff --git a/icarus/core/neo-geo-pocket.cpp b/icarus/core/neo-geo-pocket.cpp
new file mode 100644
index 00000000..f0646e41
--- /dev/null
+++ b/icarus/core/neo-geo-pocket.cpp
@@ -0,0 +1,39 @@
+auto Icarus::neoGeoPocketManifest(string location) -> string {
+  vector<uint8_t> buffer;
+  concatenate(buffer, {location, "program.rom"});
+  return neoGeoPocketManifest(buffer, location);
+}
+
+auto Icarus::neoGeoPocketManifest(vector<uint8_t>& buffer, string location) -> string {
+  if(settings["icarus/UseDatabase"].boolean()) {
+    auto digest = Hash::SHA256(buffer).digest();
+    for(auto game : Database::NeoGeoPocket.find("game")) {
+      if(game["sha256"].text() == digest) return BML::serialize(game);
+    }
+  }
+
+  if(settings["icarus/UseHeuristics"].boolean()) {
+    Heuristics::NeoGeoPocket game{buffer, location};
+    if(auto manifest = game.manifest()) return manifest;
+  }
+
+  return {};
+}
+
+auto Icarus::neoGeoPocketImport(vector<uint8_t>& buffer, string location) -> string {
+  auto name = Location::prefix(location);
+  auto source = Location::path(location);
+  string target{settings["Library/Location"].text(), "Neo Geo Pocket/", name, ".ngp/"};
+
+  auto manifest = neoGeoPocketManifest(buffer, location);
+  if(!manifest) return failure("failed to parse ROM image");
+
+  if(!create(target)) return failure("library path unwritable");
+  if(exists({source, name, ".sav"}) && !exists({target, "save.ram"})) {
+    copy({source, name, ".sav"}, {target, "save.ram"});
+  }
+
+  if(settings["icarus/CreateManifests"].boolean()) write({target, "manifest.bml"}, manifest);
+  write({target, "program.rom"}, buffer);
+  return success(target);
+}
diff --git a/icarus/heuristics/colecovision.cpp b/icarus/heuristics/colecovision.cpp
new file mode 100644
index 00000000..89baa3aa
--- /dev/null
+++ b/icarus/heuristics/colecovision.cpp
@@ -0,0 +1,32 @@
+namespace Heuristics {
+
+struct ColecoVision {
+  ColecoVision(vector<uint8_t>& data, string location);
+  explicit operator bool() const;
+  auto manifest() const -> string;
+
+private:
+  vector<uint8_t>& data;
+  string location;
+};
+
+ColecoVision::ColecoVision(vector<uint8_t>& data, string location) : data(data), location(location) {
+}
+
+ColecoVision::operator bool() const {
+  return (bool)data;
+}
+
+auto ColecoVision::manifest() const -> string {
+  string output;
+  output.append("game\n");
+  output.append("  sha256: ", Hash::SHA256(data).digest(), "\n");
+  output.append("  label:  ", Location::prefix(location), "\n");
+  output.append("  name:   ", Location::prefix(location), "\n");
+  output.append("  board\n");
+  output.append(Memory{}.type("ROM").size(data.size()).content("Program").text());
+  output.append(Memory{}.type("RAM").size(0x8000).content("Save").text());
+  return output;
+}
+
+}
diff --git a/icarus/heuristics/neo-geo-pocket-color.cpp b/icarus/heuristics/neo-geo-pocket-color.cpp
new file mode 100644
index 00000000..3fd2d19e
--- /dev/null
+++ b/icarus/heuristics/neo-geo-pocket-color.cpp
@@ -0,0 +1,31 @@
+namespace Heuristics {
+
+struct NeoGeoPocketColor {
+  NeoGeoPocketColor(vector<uint8_t>& data, string location);
+  explicit operator bool() const;
+  auto manifest() const -> string;
+
+private:
+  vector<uint8_t>& data;
+  string location;
+};
+
+NeoGeoPocketColor::NeoGeoPocketColor(vector<uint8_t>& data, string location) : data(data), location(location) {
+}
+
+NeoGeoPocketColor::operator bool() const {
+  return (bool)data;
+}
+
+auto NeoGeoPocketColor::manifest() const -> string {
+  string output;
+  output.append("game\n");
+  output.append("  sha256: ", Hash::SHA256(data).digest(), "\n");
+  output.append("  label:  ", Location::prefix(location), "\n");
+  output.append("  name:   ", Location::prefix(location), "\n");
+  output.append("  board\n");
+  output.append(Memory{}.type("ROM").size(data.size()).content("Program").text());
+  return output;
+}
+
+}
diff --git a/icarus/heuristics/neo-geo-pocket.cpp b/icarus/heuristics/neo-geo-pocket.cpp
new file mode 100644
index 00000000..c73f155a
--- /dev/null
+++ b/icarus/heuristics/neo-geo-pocket.cpp
@@ -0,0 +1,31 @@
+namespace Heuristics {
+
+struct NeoGeoPocket {
+  NeoGeoPocket(vector<uint8_t>& data, string location);
+  explicit operator bool() const;
+  auto manifest() const -> string;
+
+private:
+  vector<uint8_t>& data;
+  string location;
+};
+
+NeoGeoPocket::NeoGeoPocket(vector<uint8_t>& data, string location) : data(data), location(location) {
+}
+
+NeoGeoPocket::operator bool() const {
+  return (bool)data;
+}
+
+auto NeoGeoPocket::manifest() const -> string {
+  string output;
+  output.append("game\n");
+  output.append("  sha256: ", Hash::SHA256(data).digest(), "\n");
+  output.append("  label:  ", Location::prefix(location), "\n");
+  output.append("  name:   ", Location::prefix(location), "\n");
+  output.append("  board\n");
+  output.append(Memory{}.type("ROM").size(data.size()).content("Program").text());
+  return output;
+}
+
+}
diff --git a/icarus/heuristics/super-famicom.cpp b/icarus/heuristics/super-famicom.cpp
index be21c911..e8db3f5f 100644
--- a/icarus/heuristics/super-famicom.cpp
+++ b/icarus/heuristics/super-famicom.cpp
@@ -254,7 +254,7 @@ auto SuperFamicom::board() const -> string {
          if(serial() == "A9PJ") {
   //Sufami Turbo (JPN)
     board.append("ST-", mode);
-  } else if(serial() == "ZSBJ") {
+  } else if(serial() == "ZBSJ") {
   //BS-X: Sore wa Namae o Nusumareta Machi no Monogatari (JPN)
     board.append("BS-MCC-");
   } else if(serial() == "042J") {
diff --git a/icarus/icarus.cpp b/icarus/icarus.cpp
index 4614445b..9a300b8a 100644
--- a/icarus/icarus.cpp
+++ b/icarus/icarus.cpp
@@ -25,11 +25,14 @@ Settings settings;
 #include "heuristics/mega-drive.cpp"
 #include "heuristics/pc-engine.cpp"
 #include "heuristics/supergrafx.cpp"
+#include "heuristics/colecovision.cpp"
 #include "heuristics/msx.cpp"
 #include "heuristics/game-boy.cpp"
 #include "heuristics/game-boy-advance.cpp"
 #include "heuristics/game-gear.cpp"
 #include "heuristics/wonderswan.cpp"
+#include "heuristics/neo-geo-pocket.cpp"
+#include "heuristics/neo-geo-pocket-color.cpp"
 #include "heuristics/bs-memory.cpp"
 #include "heuristics/sufami-turbo.cpp"
 
@@ -43,6 +46,7 @@ Settings settings;
 #include "core/mega-drive.cpp"
 #include "core/pc-engine.cpp"
 #include "core/supergrafx.cpp"
+#include "core/colecovision.cpp"
 #include "core/msx.cpp"
 #include "core/game-boy.cpp"
 #include "core/game-boy-color.cpp"
@@ -50,6 +54,8 @@ Settings settings;
 #include "core/game-gear.cpp"
 #include "core/wonderswan.cpp"
 #include "core/wonderswan-color.cpp"
+#include "core/neo-geo-pocket.cpp"
+#include "core/neo-geo-pocket-color.cpp"
 #include "core/pocket-challenge-v2.cpp"
 #include "core/bs-memory.cpp"
 #include "core/sufami-turbo.cpp"
@@ -97,6 +103,7 @@ auto nall::main(Arguments arguments) -> void {
       "*.md:*.smd:*.gen:"
       "*.pce:"
       "*.sgx:"
+      "*.cv:*.col:"
       "*.msx:"
       "*.gb:"
       "*.gbc:"
@@ -105,6 +112,8 @@ auto nall::main(Arguments arguments) -> void {
       "*.ws:"
       "*.wsc:"
       "*.pc2:"
+      "*.ngp:"
+      "*.ngpc:*.ngc:"
       "*.bs:"
       "*.st:"
       "*.zip"
@@ -121,22 +130,24 @@ auto nall::main(Arguments arguments) -> void {
   new SettingsDialog;
   new ImportDialog;
   new ErrorDialog;
-  #if defined(PLATFORM_MACOS)
-  Application::Cocoa::onAbout([&] {
-    MessageDialog().setTitle("About icarus").setText({
-      "icarus\n\n"
-      "Author: byuu\n"
-      "License: GPLv3\n"
-      "Website: https://byuu.org/\n"
-    }).information();
-  });
-  Application::Cocoa::onPreferences([&] {
-    scanDialog->settingsButton.doActivate();
-  });
-  Application::Cocoa::onQuit([&] {
-    Application::quit();
-  });
-  #endif
+
+  if constexpr(platform() == Platform::MacOS) {
+    Application::Cocoa::onAbout([&] {
+      MessageDialog().setTitle("About icarus").setText({
+        "icarus\n\n"
+        "Author: byuu\n"
+        "License: GPLv3\n"
+        "Website: https://byuu.org/\n"
+      }).information();
+    });
+    Application::Cocoa::onPreferences([&] {
+      scanDialog->settingsButton.doActivate();
+    });
+    Application::Cocoa::onQuit([&] {
+      Application::quit();
+    });
+  }
+
   scanDialog->show();
   Application::run();
   settings.save();
diff --git a/icarus/ui/scan-dialog.cpp b/icarus/ui/scan-dialog.cpp
index e57df071..fb80bdac 100644
--- a/icarus/ui/scan-dialog.cpp
+++ b/icarus/ui/scan-dialog.cpp
@@ -116,6 +116,8 @@ auto ScanDialog::gamePakType(const string& type) -> bool {
   || type == ".ws"
   || type == ".wsc"
   || type == ".pc2"
+  || type == ".ngp"
+  || type == ".ngpc"
   || type == ".bs"
   || type == ".st";
 }
@@ -138,6 +140,8 @@ auto ScanDialog::gameRomType(const string& type) -> bool {
   || type == ".ws"
   || type == ".wsc"
   || type == ".pc2"
+  || type == ".ngp"
+  || type == ".ngpc" || type == ".ngc"
   || type == ".bs"
   || type == ".st";
 }
diff --git a/nall/iterator.hpp b/nall/iterator.hpp
index e6f2e0b0..52f8eda1 100644
--- a/nall/iterator.hpp
+++ b/nall/iterator.hpp
@@ -3,53 +3,53 @@
 namespace nall {
 
 template<typename T> struct iterator {
-  iterator(T* self, uint offset) : self(self), offset(offset) {}
+  iterator(T* self, uint64_t offset) : self(self), offset(offset) {}
   auto operator*() -> T& { return self[offset]; }
   auto operator!=(const iterator& source) const -> bool { return offset != source.offset; }
   auto operator++() -> iterator& { return offset++, *this; }
 
 private:
   T* self;
-  uint offset;
+  uint64_t offset;
 };
 
 template<typename T> struct iterator_const {
-  iterator_const(const T* self, uint offset) : self(self), offset(offset) {}
+  iterator_const(const T* self, uint64_t offset) : self(self), offset(offset) {}
   auto operator*() -> const T& { return self[offset]; }
   auto operator!=(const iterator_const& source) const -> bool { return offset != source.offset; }
   auto operator++() -> iterator_const& { return offset++, *this; }
 
 private:
   const T* self;
-  uint offset;
+  uint64_t offset;
 };
 
 template<typename T> struct reverse_iterator {
-  reverse_iterator(T* self, uint offset) : self(self), offset(offset) {}
+  reverse_iterator(T* self, uint64_t offset) : self(self), offset(offset) {}
   auto operator*() -> T& { return self[offset]; }
   auto operator!=(const reverse_iterator& source) const -> bool { return offset != source.offset; }
   auto operator++() -> reverse_iterator& { return offset--, *this; }
 
 private:
   T* self;
-  uint offset;
+  uint64_t offset;
 };
 
 template<typename T> struct reverse_iterator_const {
-  reverse_iterator_const(const T* self, uint offset) : self(self), offset(offset) {}
+  reverse_iterator_const(const T* self, uint64_t offset) : self(self), offset(offset) {}
   auto operator*() -> const T& { return self[offset]; }
   auto operator!=(const reverse_iterator_const& source) const -> bool { return offset != source.offset; }
   auto operator++() -> reverse_iterator_const& { return offset--, *this; }
 
 private:
   const T* self;
-  uint offset;
+  uint64_t offset;
 };
 
 //std::rbegin(), std::rend() is missing from GCC 4.9; which I still target
 
-template<typename T, uint Size> auto rbegin(T (&array)[Size]) { return reverse_iterator<T>{array, Size - 1}; }
-template<typename T, uint Size> auto rend(T (&array)[Size]) { return reverse_iterator<T>{array, (uint)-1}; }
+template<typename T, uint64_t Size> auto rbegin(T (&array)[Size]) { return reverse_iterator<T>{array, Size - 1}; }
+template<typename T, uint64_t Size> auto rend(T (&array)[Size]) { return reverse_iterator<T>{array, (uint64_t)-1}; }
 
 template<typename T> auto rbegin(T& self) { return self.rbegin(); }
 template<typename T> auto rend(T& self) { return self.rend(); }
diff --git a/nall/range.hpp b/nall/range.hpp
index e2e5e595..891f5eca 100644
--- a/nall/range.hpp
+++ b/nall/range.hpp
@@ -4,25 +4,25 @@ namespace nall {
 
 struct range_t {
   struct iterator {
-    iterator(int position, int step = 0) : position(position), step(step) {}
-    auto operator*() const -> int { return position; }
+    iterator(int64_t position, int64_t step = 0) : position(position), step(step) {}
+    auto operator*() const -> int64_t { return position; }
     auto operator!=(const iterator& source) const -> bool { return step > 0 ? position < source.position : position > source.position; }
     auto operator++() -> iterator& { position += step; return *this; }
 
   private:
-    int position;
-    const int step;
+    int64_t position;
+    const int64_t step;
   };
 
   struct reverse_iterator {
-    reverse_iterator(int position, int step = 0) : position(position), step(step) {}
-    auto operator*() const -> int { return position; }
+    reverse_iterator(int64_t position, int64_t step = 0) : position(position), step(step) {}
+    auto operator*() const -> int64_t { return position; }
     auto operator!=(const reverse_iterator& source) const -> bool { return step > 0 ? position > source.position : position < source.position; }
     auto operator++() -> reverse_iterator& { position -= step; return *this; }
 
   private:
-    int position;
-    const int step;
+    int64_t position;
+    const int64_t step;
   };
 
   auto begin() const -> iterator { return {origin, stride}; }
@@ -31,20 +31,20 @@ struct range_t {
   auto rbegin() const -> reverse_iterator { return {target - stride, stride}; }
   auto rend() const -> reverse_iterator { return {origin - stride}; }
 
-  int origin;
-  int target;
-  int stride;
+  int64_t origin;
+  int64_t target;
+  int64_t stride;
 };
 
-inline auto range(int size) {
+inline auto range(int64_t size) {
   return range_t{0, size, 1};
 }
 
-inline auto range(int offset, int size) {
+inline auto range(int64_t offset, int64_t size) {
   return range_t{offset, size, 1};
 }
 
-inline auto range(int offset, int size, int step) {
+inline auto range(int64_t offset, int64_t size, int64_t step) {
   return range_t{offset, size, step};
 }
 
diff --git a/nall/vector.hpp b/nall/vector.hpp
index a67adf7e..7e557d6a 100644
--- a/nall/vector.hpp
+++ b/nall/vector.hpp
@@ -16,6 +16,11 @@
 
 namespace nall {
 
+template<typename T> struct vector_iterator;
+template<typename T> struct vector_iterator_const;
+template<typename T> struct vector_reverse_iterator;
+template<typename T> struct vector_reverse_iterator_const;
+
 template<typename T>
 struct vector_base {
   using type = vector_base;
@@ -30,8 +35,8 @@ struct vector_base {
   explicit operator bool() const;
   operator array_span<T>();
   operator array_view<T>() const;
-  template<typename Cast = T> auto capacity() const -> uint;
-  template<typename Cast = T> auto size() const -> uint;
+  template<typename Cast = T> auto capacity() const -> uint64_t;
+  template<typename Cast = T> auto size() const -> uint64_t;
   template<typename Cast = T> auto data() -> Cast*;
   template<typename Cast = T> auto data() const -> const Cast*;
 
@@ -45,27 +50,27 @@ struct vector_base {
 
   //memory.hpp
   auto reset() -> void;
-  auto acquire(const T* data, uint size, uint capacity = 0) -> void;
+  auto acquire(const T* data, uint64_t size, uint64_t capacity = 0) -> void;
   auto release() -> T*;
 
-  auto reserveLeft(uint capacity) -> bool;
-  auto reserveRight(uint capacity) -> bool;
-  auto reserve(uint capacity) -> bool { return reserveRight(capacity); }
+  auto reserveLeft(uint64_t capacity) -> bool;
+  auto reserveRight(uint64_t capacity) -> bool;
+  auto reserve(uint64_t capacity) -> bool { return reserveRight(capacity); }
 
-  auto reallocateLeft(uint size) -> bool;
-  auto reallocateRight(uint size) -> bool;
-  auto reallocate(uint size) -> bool { return reallocateRight(size); }
+  auto reallocateLeft(uint64_t size) -> bool;
+  auto reallocateRight(uint64_t size) -> bool;
+  auto reallocate(uint64_t size) -> bool { return reallocateRight(size); }
 
-  auto resizeLeft(uint size, const T& value = T()) -> bool;
-  auto resizeRight(uint size, const T& value = T()) -> bool;
-  auto resize(uint size, const T& value = T()) -> bool { return resizeRight(size, value); }
+  auto resizeLeft(uint64_t size, const T& value = T()) -> bool;
+  auto resizeRight(uint64_t size, const T& value = T()) -> bool;
+  auto resize(uint64_t size, const T& value = T()) -> bool { return resizeRight(size, value); }
 
   //access.hpp
-  alwaysinline auto operator[](uint offset) -> T&;
-  alwaysinline auto operator[](uint offset) const -> const T&;
+  alwaysinline auto operator[](uint64_t offset) -> T&;
+  alwaysinline auto operator[](uint64_t offset) const -> const T&;
 
-  alwaysinline auto operator()(uint offset) -> T&;
-  alwaysinline auto operator()(uint offset, const T& value) const -> const T&;
+  alwaysinline auto operator()(uint64_t offset) -> T&;
+  alwaysinline auto operator()(uint64_t offset, const T& value) const -> const T&;
 
   alwaysinline auto left() -> T&;
   alwaysinline auto first() -> T& { return left(); }
@@ -88,19 +93,19 @@ struct vector_base {
   auto append(const type& values) -> void;
   auto append(type&& values) -> void;
 
-  auto insert(uint offset, const T& value) -> void;
+  auto insert(uint64_t offset, const T& value) -> void;
 
-  auto removeLeft(uint length = 1) -> void;
-  auto removeFirst(uint length = 1) -> void { return removeLeft(length); }
-  auto removeRight(uint length = 1) -> void;
-  auto removeLast(uint length = 1) -> void { return removeRight(length); }
-  auto remove(uint offset, uint length = 1) -> void;
+  auto removeLeft(uint64_t length = 1) -> void;
+  auto removeFirst(uint64_t length = 1) -> void { return removeLeft(length); }
+  auto removeRight(uint64_t length = 1) -> void;
+  auto removeLast(uint64_t length = 1) -> void { return removeRight(length); }
+  auto remove(uint64_t offset, uint64_t length = 1) -> void;
 
   auto takeLeft() -> T;
   auto takeFirst() -> T { return move(takeLeft()); }
   auto takeRight() -> T;
   auto takeLast() -> T { return move(takeRight()); }
-  auto take(uint offset) -> T;
+  auto take(uint64_t offset) -> T;
 
   //iterator.hpp
   auto begin() -> iterator<T> { return {data(), 0}; }
@@ -110,26 +115,26 @@ struct vector_base {
   auto end() const -> iterator_const<T> { return {data(), size()}; }
 
   auto rbegin() -> reverse_iterator<T> { return {data(), size() - 1}; }
-  auto rend() -> reverse_iterator<T> { return {data(), (uint)-1}; }
+  auto rend() -> reverse_iterator<T> { return {data(), (uint64_t)-1}; }
 
   auto rbegin() const -> reverse_iterator_const<T> { return {data(), size() - 1}; }
-  auto rend() const -> reverse_iterator_const<T> { return {data(), (uint)-1}; }
+  auto rend() const -> reverse_iterator_const<T> { return {data(), (uint64_t)-1}; }
 
   //utility.hpp
   auto fill(const T& value = {}) -> void;
   auto sort(const function<bool (const T& lhs, const T& rhs)>& comparator = [](auto& lhs, auto& rhs) { return lhs < rhs; }) -> void;
   auto reverse() -> void;
-  auto find(const function<bool (const T& lhs)>& comparator) -> maybe<uint>;
-  auto find(const T& value) const -> maybe<uint>;
-  auto findSorted(const T& value) const -> maybe<uint>;
+  auto find(const function<bool (const T& lhs)>& comparator) -> maybe<uint64_t>;
+  auto find(const T& value) const -> maybe<uint64_t>;
+  auto findSorted(const T& value) const -> maybe<uint64_t>;
   auto foreach(const function<void (const T&)>& callback) -> void;
   auto foreach(const function<void (uint, const T&)>& callback) -> void;
 
 protected:
-  T* _pool = nullptr;  //pointer to first initialized element in pool
-  uint _size = 0;      //number of initialized elements in pool
-  uint _left = 0;      //number of allocated elements free on the left of pool
-  uint _right = 0;     //number of allocated elements free on the right of pool
+  T* _pool = nullptr;   //pointer to first initialized element in pool
+  uint64_t _size = 0;   //number of initialized elements in pool
+  uint64_t _left = 0;   //number of allocated elements free on the left of pool
+  uint64_t _right = 0;  //number of allocated elements free on the right of pool
 };
 
 }
diff --git a/nall/vector/access.hpp b/nall/vector/access.hpp
index a23f4aaa..62f44fb0 100644
--- a/nall/vector/access.hpp
+++ b/nall/vector/access.hpp
@@ -2,7 +2,7 @@
 
 namespace nall {
 
-template<typename T> auto vector<T>::operator[](uint offset) -> T& {
+template<typename T> auto vector<T>::operator[](uint64_t offset) -> T& {
   #ifdef DEBUG
   struct out_of_bounds {};
   if(offset >= size()) throw out_of_bounds{};
@@ -10,7 +10,7 @@ template<typename T> auto vector<T>::operator[](uint offset) -> T& {
   return _pool[offset];
 }
 
-template<typename T> auto vector<T>::operator[](uint offset) const -> const T& {
+template<typename T> auto vector<T>::operator[](uint64_t offset) const -> const T& {
   #ifdef DEBUG
   struct out_of_bounds {};
   if(offset >= size()) throw out_of_bounds{};
@@ -18,12 +18,12 @@ template<typename T> auto vector<T>::operator[](uint offset) const -> const T& {
   return _pool[offset];
 }
 
-template<typename T> auto vector<T>::operator()(uint offset) -> T& {
+template<typename T> auto vector<T>::operator()(uint64_t offset) -> T& {
   while(offset >= size()) append(T());
   return _pool[offset];
 }
 
-template<typename T> auto vector<T>::operator()(uint offset, const T& value) const -> const T& {
+template<typename T> auto vector<T>::operator()(uint64_t offset, const T& value) const -> const T& {
   if(offset >= size()) return value;
   return _pool[offset];
 }
diff --git a/nall/vector/assign.hpp b/nall/vector/assign.hpp
index 565237cf..2d66149c 100644
--- a/nall/vector/assign.hpp
+++ b/nall/vector/assign.hpp
@@ -8,7 +8,7 @@ template<typename T> auto vector<T>::operator=(const vector<T>& source) -> vecto
   _size = source._size;
   _left = 0;
   _right = 0;
-  for(uint n : range(_size)) new(_pool + n) T(source._pool[n]);
+  for(uint64_t n : range(_size)) new(_pool + n) T(source._pool[n]);
   return *this;
 }
 
diff --git a/nall/vector/compare.hpp b/nall/vector/compare.hpp
index 5400dc8a..e2ef4b7b 100644
--- a/nall/vector/compare.hpp
+++ b/nall/vector/compare.hpp
@@ -5,7 +5,7 @@ namespace nall {
 template<typename T> auto vector<T>::operator==(const vector<T>& source) const -> bool {
   if(this == &source) return true;
   if(size() != source.size()) return false;
-  for(uint n = 0; n < size(); n++) {
+  for(uint64_t n = 0; n < size(); n++) {
     if(operator[](n) != source[n]) return false;
   }
   return true;
diff --git a/nall/vector/core.hpp b/nall/vector/core.hpp
index b9dae54e..a332928e 100644
--- a/nall/vector/core.hpp
+++ b/nall/vector/core.hpp
@@ -31,11 +31,11 @@ template<typename T> vector<T>::operator array_view<T>() const {
   return {data(), size()};
 }
 
-template<typename T> template<typename Cast> auto vector<T>::capacity() const -> uint {
+template<typename T> template<typename Cast> auto vector<T>::capacity() const -> uint64_t {
   return (_left + _size + _right) * sizeof(T) / sizeof(Cast);
 }
 
-template<typename T> template<typename Cast> auto vector<T>::size() const -> uint {
+template<typename T> template<typename Cast> auto vector<T>::size() const -> uint64_t {
   return _size * sizeof(T) / sizeof(Cast);
 }
 
diff --git a/nall/vector/iterator.hpp b/nall/vector/iterator.hpp
index 259d9599..6c8aee70 100644
--- a/nall/vector/iterator.hpp
+++ b/nall/vector/iterator.hpp
@@ -4,50 +4,50 @@ namespace nall {
 
 template<typename T>
 struct vector_iterator {
-  vector_iterator(vector<T>& self, uint offset) : self(self), offset(offset) {}
+  vector_iterator(vector<T>& self, uint64_t offset) : self(self), offset(offset) {}
   auto operator*() -> T& { return self.operator[](offset); }
   auto operator!=(const vector_iterator& source) const -> bool { return offset != source.offset; }
   auto operator++() -> vector_iterator& { return offset++, *this; }
 
 private:
   vector<T>& self;
-  uint offset;
+  uint64_t offset;
 };
 
 template<typename T>
 struct vector_iterator_const {
-  vector_iterator_const(const vector<T>& self, uint offset) : self(self), offset(offset) {}
+  vector_iterator_const(const vector<T>& self, uint64_t offset) : self(self), offset(offset) {}
   auto operator*() -> const T& { return self.operator[](offset); }
   auto operator!=(const vector_iterator_const& source) const -> bool { return offset != source.offset; }
   auto operator++() -> vector_iterator_const& { return offset++, *this; }
 
 private:
   const vector<T>& self;
-  uint offset;
+  uint64_t offset;
 };
 
 template<typename T>
-struct vector_iterator_reverse {
-  vector_iterator_reverse(vector<T>& self, uint offset) : self(self), offset(offset) {}
+struct vector_reverse_iterator {
+  vector_reverse_iterator(vector<T>& self, uint64_t offset) : self(self), offset(offset) {}
   auto operator*() -> T& { return self.operator[](offset); }
-  auto operator!=(const vector_iterator_reverse& source) const -> bool { return offset != source.offset; }
-  auto operator++() -> vector_iterator_reverse& { return offset--, *this; }
+  auto operator!=(const vector_reverse_iterator& source) const -> bool { return offset != source.offset; }
+  auto operator++() -> vector_reverse_iterator& { return offset--, *this; }
 
 private:
   vector<T>& self;
-  uint offset;
+  uint64_t offset;
 };
 
 template<typename T>
-struct vector_iterator_reverse_const {
-  vector_iterator_reverse_const(const vector<T>& self, uint offset) : self(self), offset(offset) {}
+struct vector_reverse_iterator_const {
+  vector_reverse_iterator_const(const vector<T>& self, uint64_t offset) : self(self), offset(offset) {}
   auto operator*() -> const T& { return self.operator[](offset); }
-  auto operator!=(const vector_iterator_reverse_const& source) const -> bool { return offset != source.offset; }
-  auto operator++() -> vector_iterator_reverse_const& { return offset--, *this; }
+  auto operator!=(const vector_reverse_iterator_const& source) const -> bool { return offset != source.offset; }
+  auto operator++() -> vector_reverse_iterator_const& { return offset--, *this; }
 
 private:
   const vector<T>& self;
-  uint offset;
+  uint64_t offset;
 };
 
 }
diff --git a/nall/vector/memory.hpp b/nall/vector/memory.hpp
index b6a3bf7d..15d7dd4f 100644
--- a/nall/vector/memory.hpp
+++ b/nall/vector/memory.hpp
@@ -8,7 +8,7 @@ namespace nall {
 template<typename T> auto vector<T>::reset() -> void {
   if(!_pool) return;
 
-  for(uint n : range(_size)) _pool[n].~T();
+  for(uint64_t n : range(_size)) _pool[n].~T();
   memory::free(_pool - _left);
 
   _pool = nullptr;
@@ -19,7 +19,7 @@ template<typename T> auto vector<T>::reset() -> void {
 
 //acquire ownership of allocated memory
 
-template<typename T> auto vector<T>::acquire(const T* data, uint size, uint capacity) -> void {
+template<typename T> auto vector<T>::acquire(const T* data, uint64_t size, uint64_t capacity) -> void {
   reset();
   _pool = data;
   _size = size;
@@ -43,12 +43,12 @@ template<typename T> auto vector<T>::release() -> T* {
 //reserve will not actually shrink the capacity, only expand it
 //shrinking the capacity would destroy objects, and break amortized growth with reallocate and resize
 
-template<typename T> auto vector<T>::reserveLeft(uint capacity) -> bool {
+template<typename T> auto vector<T>::reserveLeft(uint64_t capacity) -> bool {
   if(_size + _left >= capacity) return false;
 
-  uint left = bit::round(capacity);
+  uint64_t left = bit::round(capacity);
   auto pool = memory::allocate<T>(left + _right) + (left - _size);
-  for(uint n : range(_size)) new(pool + n) T(move(_pool[n]));
+  for(uint64_t n : range(_size)) new(pool + n) T(move(_pool[n]));
   memory::free(_pool - _left);
 
   _pool = pool;
@@ -57,12 +57,12 @@ template<typename T> auto vector<T>::reserveLeft(uint capacity) -> bool {
   return true;
 }
 
-template<typename T> auto vector<T>::reserveRight(uint capacity) -> bool {
+template<typename T> auto vector<T>::reserveRight(uint64_t capacity) -> bool {
   if(_size + _right >= capacity) return false;
 
-  uint right = bit::round(capacity);
+  uint64_t right = bit::round(capacity);
   auto pool = memory::allocate<T>(_left + right) + _left;
-  for(uint n : range(_size)) new(pool + n) T(move(_pool[n]));
+  for(uint64_t n : range(_size)) new(pool + n) T(move(_pool[n]));
   memory::free(_pool - _left);
 
   _pool = pool;
@@ -74,7 +74,7 @@ template<typename T> auto vector<T>::reserveRight(uint capacity) -> bool {
 //reallocation is meant for POD types, to avoid the overhead of initialization
 //do not use with non-POD types, or they will not be properly constructed or destructed
 
-template<typename T> auto vector<T>::reallocateLeft(uint size) -> bool {
+template<typename T> auto vector<T>::reallocateLeft(uint64_t size) -> bool {
   if(size < _size) {  //shrink
     _pool += _size - size;
     _left += _size - size;
@@ -91,7 +91,7 @@ template<typename T> auto vector<T>::reallocateLeft(uint size) -> bool {
   return false;
 }
 
-template<typename T> auto vector<T>::reallocateRight(uint size) -> bool {
+template<typename T> auto vector<T>::reallocateRight(uint64_t size) -> bool {
   if(size < _size) {  //shrink
     _right += _size - size;
     _size = size;
@@ -108,9 +108,9 @@ template<typename T> auto vector<T>::reallocateRight(uint size) -> bool {
 
 //resize is meant for non-POD types, and will properly construct objects
 
-template<typename T> auto vector<T>::resizeLeft(uint size, const T& value) -> bool {
+template<typename T> auto vector<T>::resizeLeft(uint64_t size, const T& value) -> bool {
   if(size < _size) {  //shrink
-    for(uint n : range(_size - size)) _pool[n].~T();
+    for(uint64_t n : range(_size - size)) _pool[n].~T();
     _pool += _size - size;
     _left += _size - size;
     _size = size;
@@ -119,7 +119,7 @@ template<typename T> auto vector<T>::resizeLeft(uint size, const T& value) -> bo
   if(size > _size) {  //grow
     reserveLeft(size);
     _pool -= size - _size;
-    for(uint n : nall::reverse(range(size - _size))) new(_pool + n) T(value);
+    for(uint64_t n : nall::reverse(range(size - _size))) new(_pool + n) T(value);
     _left -= size - _size;
     _size = size;
     return true;
@@ -127,16 +127,16 @@ template<typename T> auto vector<T>::resizeLeft(uint size, const T& value) -> bo
   return false;
 }
 
-template<typename T> auto vector<T>::resizeRight(uint size, const T& value) -> bool {
+template<typename T> auto vector<T>::resizeRight(uint64_t size, const T& value) -> bool {
   if(size < _size) {  //shrink
-    for(uint n : range(size, _size)) _pool[n].~T();
+    for(uint64_t n : range(size, _size)) _pool[n].~T();
     _right += _size - size;
     _size = size;
     return true;
   }
   if(size > _size) {  //grow
     reserveRight(size);
-    for(uint n : range(_size, size)) new(_pool + n) T(value);
+    for(uint64_t n : range(_size, size)) new(_pool + n) T(value);
     _right -= size - _size;
     _size = size;
     return true;
diff --git a/nall/vector/modify.hpp b/nall/vector/modify.hpp
index 8e11f8dd..4c034205 100644
--- a/nall/vector/modify.hpp
+++ b/nall/vector/modify.hpp
@@ -19,7 +19,7 @@ template<typename T> auto vector<T>::prepend(T&& value) -> void {
 template<typename T> auto vector<T>::prepend(const vector<T>& values) -> void {
   reserveLeft(size() + values.size());
   _pool -= values.size();
-  for(uint n : range(values)) new(_pool + n) T(values[n]);
+  for(uint64_t n : range(values)) new(_pool + n) T(values[n]);
   _left -= values.size();
   _size += values.size();
 }
@@ -27,7 +27,7 @@ template<typename T> auto vector<T>::prepend(const vector<T>& values) -> void {
 template<typename T> auto vector<T>::prepend(vector<T>&& values) -> void {
   reserveLeft(size() + values.size());
   _pool -= values.size();
-  for(uint n : range(values)) new(_pool + n) T(move(values[n]));
+  for(uint64_t n : range(values)) new(_pool + n) T(move(values[n]));
   _left -= values.size();
   _size += values.size();
 }
@@ -50,26 +50,26 @@ template<typename T> auto vector<T>::append(T&& value) -> void {
 
 template<typename T> auto vector<T>::append(const vector<T>& values) -> void {
   reserveRight(size() + values.size());
-  for(uint n : range(values.size())) new(_pool + _size + n) T(values[n]);
+  for(uint64_t n : range(values.size())) new(_pool + _size + n) T(values[n]);
   _right -= values.size();
   _size += values.size();
 }
 
 template<typename T> auto vector<T>::append(vector<T>&& values) -> void {
   reserveRight(size() + values.size());
-  for(uint n : range(values.size())) new(_pool + _size + n) T(move(values[n]));
+  for(uint64_t n : range(values.size())) new(_pool + _size + n) T(move(values[n]));
   _right -= values.size();
   _size += values.size();
 }
 
 //
 
-template<typename T> auto vector<T>::insert(uint offset, const T& value) -> void {
+template<typename T> auto vector<T>::insert(uint64_t offset, const T& value) -> void {
   if(offset == 0) return prepend(value);
   if(offset == size() - 1) return append(value);
   reserveRight(size() + 1);
   _size++;
-  for(int n = size() - 1; n > offset; n--) {
+  for(int64_t n = size() - 1; n > offset; n--) {
     _pool[n] = move(_pool[n - 1]);
   }
   new(_pool + offset) T(value);
@@ -77,21 +77,21 @@ template<typename T> auto vector<T>::insert(uint offset, const T& value) -> void
 
 //
 
-template<typename T> auto vector<T>::removeLeft(uint length) -> void {
+template<typename T> auto vector<T>::removeLeft(uint64_t length) -> void {
   if(length > size()) length = size();
   resizeLeft(size() - length);
 }
 
-template<typename T> auto vector<T>::removeRight(uint length) -> void {
+template<typename T> auto vector<T>::removeRight(uint64_t length) -> void {
   if(length > size()) length = size();
   resizeRight(size() - length);
 }
 
-template<typename T> auto vector<T>::remove(uint offset, uint length) -> void {
+template<typename T> auto vector<T>::remove(uint64_t offset, uint64_t length) -> void {
   if(offset == 0) return removeLeft(length);
   if(offset == size() - 1) return removeRight(length);
 
-  for(uint n = offset; n < size(); n++) {
+  for(uint64_t n = offset; n < size(); n++) {
     if(n + length < size()) {
       _pool[n] = move(_pool[n + length]);
     } else {
@@ -115,7 +115,7 @@ template<typename T> auto vector<T>::takeRight() -> T {
   return value;
 }
 
-template<typename T> auto vector<T>::take(uint offset) -> T {
+template<typename T> auto vector<T>::take(uint64_t offset) -> T {
   if(offset == 0) return takeLeft();
   if(offset == size() - 1) return takeRight();
 
diff --git a/nall/vector/utility.hpp b/nall/vector/utility.hpp
index abf9282b..635f52ee 100644
--- a/nall/vector/utility.hpp
+++ b/nall/vector/utility.hpp
@@ -3,7 +3,7 @@
 namespace nall {
 
 template<typename T> auto vector<T>::fill(const T& value) -> void {
-  for(uint n : range(size())) _pool[n] = value;
+  for(uint64_t n : range(size())) _pool[n] = value;
 }
 
 template<typename T> auto vector<T>::sort(const function<bool (const T& lhs, const T& rhs)>& comparator) -> void {
@@ -12,24 +12,24 @@ template<typename T> auto vector<T>::sort(const function<bool (const T& lhs, con
 
 template<typename T> auto vector<T>::reverse() -> void {
   vector<T> reversed;
-  for(uint n : range(size())) reversed.prepend(_pool[n]);
+  for(uint64_t n : range(size())) reversed.prepend(_pool[n]);
   operator=(move(reversed));
 }
 
-template<typename T> auto vector<T>::find(const function<bool (const T& lhs)>& comparator) -> maybe<uint> {
-  for(uint n : range(size())) if(comparator(_pool[n])) return n;
+template<typename T> auto vector<T>::find(const function<bool (const T& lhs)>& comparator) -> maybe<uint64_t> {
+  for(uint64_t n : range(size())) if(comparator(_pool[n])) return n;
   return nothing;
 }
 
-template<typename T> auto vector<T>::find(const T& value) const -> maybe<uint> {
-  for(uint n : range(size())) if(_pool[n] == value) return n;
+template<typename T> auto vector<T>::find(const T& value) const -> maybe<uint64_t> {
+  for(uint64_t n : range(size())) if(_pool[n] == value) return n;
   return nothing;
 }
 
-template<typename T> auto vector<T>::findSorted(const T& value) const -> maybe<uint> {
-  int l = 0, r = size() - 1;
+template<typename T> auto vector<T>::findSorted(const T& value) const -> maybe<uint64_t> {
+  int64_t l = 0, r = size() - 1;
   while(l <= r) {
-    int m = l + (r - l >> 1);
+    int64_t m = l + (r - l >> 1);
     if(value == _pool[m]) return m;
     value < _pool[m] ? r = m - 1 : l = m + 1;
   }
@@ -37,11 +37,11 @@ template<typename T> auto vector<T>::findSorted(const T& value) const -> maybe<u
 }
 
 template<typename T> auto vector<T>::foreach(const function<void (const T&)>& callback) -> void {
-  for(uint n : range(size())) callback(_pool[n]);
+  for(uint64_t n : range(size())) callback(_pool[n]);
 }
 
 template<typename T> auto vector<T>::foreach(const function<void (uint, const T&)>& callback) -> void {
-  for(uint n : range(size())) callback(n, _pool[n]);
+  for(uint64_t n : range(size())) callback(n, _pool[n]);
 }
 
 }