diff --git a/bsnes/nall/snes/cartridge.hpp b/bsnes/nall/snes/cartridge.hpp
index 48d32720..e3c0e0c5 100755
--- a/bsnes/nall/snes/cartridge.hpp
+++ b/bsnes/nall/snes/cartridge.hpp
@@ -362,7 +362,7 @@ SNESCartridge::SNESCartridge(const uint8_t *data, unsigned size) {
     xml << "        <map mode='linear' address='20-3f:8000-ffff'/>\n";
     xml << "        <map mode='linear' address='a0-bf:8000-ffff'/>\n";
     xml << "      </rom>\n";
-    xml << "      <ram>\n";
+    xml << "      <ram size='20000'>\n";
     xml << "        <map mode='linear' address='60-63:8000-ffff'/>\n";
     xml << "        <map mode='linear' address='e0-e3:8000-ffff'/>\n";
     xml << "      </ram>\n";
@@ -372,7 +372,7 @@ SNESCartridge::SNESCartridge(const uint8_t *data, unsigned size) {
     xml << "        <map mode='linear' address='40-5f:8000-ffff'/>\n";
     xml << "        <map mode='linear' address='c0-df:8000-ffff'/>\n";
     xml << "      </rom>\n";
-    xml << "      <ram>\n";
+    xml << "      <ram size='20000'>\n";
     xml << "        <map mode='linear' address='70-73:8000-ffff'/>\n";
     xml << "        <map mode='linear' address='f0-f3:8000-ffff'/>\n";
     xml << "      </ram>\n";
diff --git a/bsnes/snes/cartridge/cartridge.hpp b/bsnes/snes/cartridge/cartridge.hpp
index d50f5c3d..3e0d682e 100755
--- a/bsnes/snes/cartridge/cartridge.hpp
+++ b/bsnes/snes/cartridge/cartridge.hpp
@@ -19,15 +19,15 @@ public:
     SufamiTurboA,
     SufamiTurboB,
     GameBoy,
+
+    NECDSP,
+    MSU1,
+    Serial,
   };
 
   MappedRAM rom;
   MappedRAM ram;
 
-  //assigned externally to point to file-system datafiles (msu1 and serial)
-  //example: "/path/to/filename.sfc" would set this to "/path/to/filename"
-  readwrite<string> basename;
-
   readonly<bool> loaded;
   readonly<unsigned> crc32;
   readonly<string> sha256;
diff --git a/bsnes/snes/cartridge/xml.cpp b/bsnes/snes/cartridge/xml.cpp
index 58584b3d..488bdc33 100755
--- a/bsnes/snes/cartridge/xml.cpp
+++ b/bsnes/snes/cartridge/xml.cpp
@@ -274,7 +274,7 @@ void Cartridge::xml_parse_necdsp(xml_element &root) {
   unsigned filesize = promsize * 3 + dromsize * 2;
 
   file fp;
-  if(fp.open(string(dir(basename()), program), file::mode::read)) {
+  if(fp.open(system.interface->path(Slot::NECDSP, program), file::mode::read)) {
     if(fp.size() == filesize) {
       for(unsigned n = 0; n < promsize; n++) necdsp.programROM[n] = fp.readm(3);
       for(unsigned n = 0; n < dromsize; n++) necdsp.dataROM[n] = fp.readm(2);
@@ -328,7 +328,7 @@ void Cartridge::xml_parse_necdsp(xml_element &root) {
     }
   }
 
-  if(program == "") {
+  if(programhash == "") {
     system.interface->message({ "Warning: NEC DSP program ", program, " is missing." });
   } else if(sha256 != "" && sha256 != programhash) {
     system.interface->message({
@@ -405,10 +405,17 @@ void Cartridge::xml_parse_sufamiturbo(xml_element &root) {
                 if(attr.name == "offset") m.offset = hex(attr.content);
                 if(attr.name == "size") m.size = hex(attr.content);
               }
-              if(memory.size() > 0) mapping.append(m);
+              if(m.size == 0) m.size = memory.size();
+              if(m.size) mapping.append(m);
             }
           }
         } else if(slot.name == "ram") {
+          unsigned ram_size = 0;
+
+          foreach(attr, slot.attribute) {
+            if(attr.name == "size") ram_size = hex(attr.content);
+          }
+
           foreach(leaf, slot.element) {
             if(leaf.name == "map") {
               Memory &memory = slotid == 0 ? sufamiturbo.slotA.ram : sufamiturbo.slotB.ram;
@@ -419,7 +426,8 @@ void Cartridge::xml_parse_sufamiturbo(xml_element &root) {
                 if(attr.name == "offset") m.offset = hex(attr.content);
                 if(attr.name == "size") m.size = hex(attr.content);
               }
-              if(memory.size() > 0) mapping.append(m);
+              if(m.size == 0) m.size = ram_size;
+              if(m.size) mapping.append(m);
             }
           }
         }
diff --git a/bsnes/snes/chip/msu1/msu1.cpp b/bsnes/snes/chip/msu1/msu1.cpp
index 2b78d660..cc27244f 100755
--- a/bsnes/snes/chip/msu1/msu1.cpp
+++ b/bsnes/snes/chip/msu1/msu1.cpp
@@ -50,7 +50,7 @@ void MSU1::init() {
 
 void MSU1::load() {
   if(datafile.open()) datafile.close();
-  datafile.open(string(cartridge.basename(), ".msu"), file::mode::read);
+  datafile.open(system.interface->path(Cartridge::Slot::MSU1, ".msu"), file::mode::read);
 }
 
 void MSU1::unload() {
@@ -133,7 +133,7 @@ void MSU1::mmio_write(unsigned addr, uint8 data) {
   if(addr == 0x2005) {
     mmio.audio_track = (mmio.audio_track & 0x00ff) | (data << 8);
     if(audiofile.open()) audiofile.close();
-    if(audiofile.open(string(cartridge.basename(), "-", (unsigned)mmio.audio_track, ".pcm"), file::mode::read)) {
+    if(audiofile.open(system.interface->path(Cartridge::Slot::MSU1, { "-", (unsigned)mmio.audio_track, ".pcm" }), file::mode::read)) {
       uint32 header = audiofile.readm(4);
       if(header != 0x4d535531) {  //verify 'MSU1' header
         audiofile.close();
diff --git a/bsnes/snes/chip/msu1/serialization.cpp b/bsnes/snes/chip/msu1/serialization.cpp
index 53df1ee3..e01f3a39 100755
--- a/bsnes/snes/chip/msu1/serialization.cpp
+++ b/bsnes/snes/chip/msu1/serialization.cpp
@@ -16,12 +16,12 @@ void MSU1::serialize(serializer &s) {
   s.integer(mmio.audio_play);
 
   if(datafile.open()) datafile.close();
-  if(datafile.open(string(cartridge.basename(), ".msu"), file::mode::read)) {
+  if(datafile.open(system.interface->path(Cartridge::Slot::MSU1, ".msu"), file::mode::read)) {
     datafile.seek(mmio.data_offset);
   }
 
   if(audiofile.open()) audiofile.close();
-  if(audiofile.open(string(cartridge.basename(), "-", (unsigned)mmio.audio_track, ".pcm"), file::mode::read)) {
+  if(audiofile.open(system.interface->path(Cartridge::Slot::MSU1, { "-", (unsigned)mmio.audio_track, ".pcm" }), file::mode::read)) {
     audiofile.seek(mmio.audio_offset);
   }
 }
diff --git a/bsnes/snes/chip/serial/serial.cpp b/bsnes/snes/chip/serial/serial.cpp
index a0bfbb93..1fee5b2e 100755
--- a/bsnes/snes/chip/serial/serial.cpp
+++ b/bsnes/snes/chip/serial/serial.cpp
@@ -79,8 +79,9 @@ void Serial::init() {
 
 void Serial::load() {
   if(opened()) close();
-  string name = notdir(cartridge.basename());
-  string path = dir(cartridge.basename());
+  string basename = system.interface->path(Cartridge::Slot::Serial, "");
+  string name = notdir(basename);
+  string path = dir(basename);
   if(open(name, path)) {
     baudrate = sym("snesserial_baudrate");
     flowcontrol = sym("snesserial_flowcontrol");
diff --git a/bsnes/snes/chip/sufamiturbo/sufamiturbo.cpp b/bsnes/snes/chip/sufamiturbo/sufamiturbo.cpp
index 8104e3b5..33ebb8ef 100755
--- a/bsnes/snes/chip/sufamiturbo/sufamiturbo.cpp
+++ b/bsnes/snes/chip/sufamiturbo/sufamiturbo.cpp
@@ -11,13 +11,13 @@ void SufamiTurbo::load() {
   slotB.ram.map(allocate<uint8>(128 * 1024, 0xff), 128 * 1024);
 
   if(slotA.rom.data()) {
-    cartridge.nvram.append({ "srm", slotA.ram.data(), slotA.ram.size(), Cartridge::Slot::SufamiTurboA });
+    cartridge.nvram.append({ "sts", slotA.ram.data(), slotA.ram.size(), Cartridge::Slot::SufamiTurboA });
   } else {
     slotA.rom.map(allocate<uint8>(128 * 1024, 0xff), 128 * 1024);
   }
 
   if(slotB.rom.data()) {
-    cartridge.nvram.append({ "srm", slotB.ram.data(), slotB.ram.size(), Cartridge::Slot::SufamiTurboB });
+    cartridge.nvram.append({ "sts", slotB.ram.data(), slotB.ram.size(), Cartridge::Slot::SufamiTurboB });
   } else {
     slotB.rom.map(allocate<uint8>(128 * 1024, 0xff), 128 * 1024);
   }
diff --git a/bsnes/snes/interface/interface.hpp b/bsnes/snes/interface/interface.hpp
index fb236aea..71aabe7c 100755
--- a/bsnes/snes/interface/interface.hpp
+++ b/bsnes/snes/interface/interface.hpp
@@ -6,4 +6,5 @@ public:
   virtual int16_t input_poll(bool port, Input::Device device, unsigned index, unsigned id) { return 0; }
 
   virtual void message(const string &text) { print(text, "\n"); }
+  virtual string path(Cartridge::Slot slot, const string &path) { return path; };
 };
diff --git a/bsnes/snes/snes.hpp b/bsnes/snes/snes.hpp
index cc227247..a69d84ca 100755
--- a/bsnes/snes/snes.hpp
+++ b/bsnes/snes/snes.hpp
@@ -1,7 +1,7 @@
 namespace SNES {
   namespace Info {
     static const char Name[] = "bsnes";
-    static const char Version[] = "076.03";
+    static const char Version[] = "076.04";
     static const unsigned SerializerVersion = 18;
   }
 }
@@ -132,6 +132,7 @@ namespace SNES {
   #include <snes/chip/chip.hpp>
   #include <snes/cartridge/cartridge.hpp>
   #include <snes/cheat/cheat.hpp>
+  #include <snes/interface/interface.hpp>
 
   #include <snes/memory/memory-inline.hpp>
   #include <snes/ppu/counter/counter-inline.hpp>
diff --git a/bsnes/snes/system/system.hpp b/bsnes/snes/system/system.hpp
index 4cf7474b..2382de8d 100755
--- a/bsnes/snes/system/system.hpp
+++ b/bsnes/snes/system/system.hpp
@@ -2,6 +2,7 @@ class Interface;
 
 class System : property<System> {
 public:
+  Interface *interface;
   enum class Region : unsigned { NTSC = 0, PAL = 1, Autodetect = 2 };
   enum class ExpansionPortDevice : unsigned { None = 0, BSX = 1 };
 
@@ -31,7 +32,6 @@ public:
   System();
 
 private:
-  Interface *interface;
   void runthreadtosave();
 
   void serialize(serializer&);
@@ -50,7 +50,6 @@ private:
 
 #include <snes/config/config.hpp>
 #include <snes/debugger/debugger.hpp>
-#include <snes/interface/interface.hpp>
 #include <snes/scheduler/scheduler.hpp>
 
 extern System system;
diff --git a/bsnes/ui/cartridge/cartridge.cpp b/bsnes/ui/cartridge/cartridge.cpp
index 92504bf4..81852e8b 100755
--- a/bsnes/ui/cartridge/cartridge.cpp
+++ b/bsnes/ui/cartridge/cartridge.cpp
@@ -4,7 +4,7 @@ Cartridge cartridge;
 bool Cartridge::loadNormal(const char *basename) {
   unload();
   if(loadCartridge(SNES::cartridge.rom, baseXML, basename) == false) return false;
-  SNES::cartridge.basename = baseName = nall::basename(basename);
+  baseName = nall::basename(basename);
   SNES::cartridge.load(SNES::Cartridge::Mode::Normal, { baseXML });
   foreach(memory, SNES::cartridge.nvram) loadMemory(memory);
   utility.cartridgeLoaded();
@@ -15,7 +15,7 @@ bool Cartridge::loadBsxSlotted(const char *basename, const char *slotname) {
   unload();
   if(loadCartridge(SNES::cartridge.rom, baseXML, basename) == false) return false;
   loadCartridge(SNES::bsxflash.memory, bsxXML, slotname);
-  SNES::cartridge.basename = baseName = nall::basename(basename);
+  baseName = nall::basename(basename);
   bsxName = nall::basename(slotname);
   SNES::cartridge.load(SNES::Cartridge::Mode::BsxSlotted, { baseXML, bsxXML });
   foreach(memory, SNES::cartridge.nvram) loadMemory(memory);
@@ -27,7 +27,7 @@ bool Cartridge::loadBsx(const char *basename, const char *slotname) {
   unload();
   if(loadCartridge(SNES::cartridge.rom, baseXML, basename) == false) return false;
   loadCartridge(SNES::bsxflash.memory, bsxXML, slotname);
-  SNES::cartridge.basename = baseName = nall::basename(basename);
+  baseName = nall::basename(basename);
   bsxName = nall::basename(slotname);
   SNES::cartridge.load(SNES::Cartridge::Mode::Bsx, { baseXML, bsxXML });
   foreach(memory, SNES::cartridge.nvram) loadMemory(memory);
@@ -40,7 +40,7 @@ bool Cartridge::loadSufamiTurbo(const char *basename, const char *slotAname, con
   if(loadCartridge(SNES::cartridge.rom, baseXML, basename) == false) return false;
   loadCartridge(SNES::sufamiturbo.slotA.rom, sufamiTurboAXML, slotAname);
   loadCartridge(SNES::sufamiturbo.slotB.rom, sufamiTurboBXML, slotBname);
-  SNES::cartridge.basename = baseName = nall::basename(basename);
+  baseName = nall::basename(basename);
   sufamiTurboAName = nall::basename(slotAname);
   sufamiTurboBName = nall::basename(slotBname);
   SNES::cartridge.load(SNES::Cartridge::Mode::SufamiTurbo, { baseXML, sufamiTurboAXML, sufamiTurboBXML });
@@ -68,7 +68,7 @@ bool Cartridge::loadSuperGameBoy(const char *basename, const char *slotname) {
   GameBoy::cartridge.load(info.xml, data, size);
   if(data) delete[] data;
 
-  SNES::cartridge.basename = baseName = nall::basename(basename);
+  baseName = nall::basename(basename);
   gameBoyName = nall::basename(slotname);
   SNES::cartridge.load(SNES::Cartridge::Mode::SuperGameBoy, { baseXML, "" });
 
diff --git a/bsnes/ui/debugger/console.cpp b/bsnes/ui/debugger/console.cpp
index 36144aec..996eab75 100755
--- a/bsnes/ui/debugger/console.cpp
+++ b/bsnes/ui/debugger/console.cpp
@@ -54,7 +54,7 @@ void Console::write(const string &text, bool echo) {
 
 void Console::tracerEnable(bool state) {
   if(state == true) {
-    logfile.open(path.load(SNES::Cartridge::Slot::Cartridge, "log"), file::mode::write);
+    logfile.open(path.load(SNES::Cartridge::Slot::Base, "log"), file::mode::write);
   } else {
     logfile.close();
   }
diff --git a/bsnes/ui/interface.cpp b/bsnes/ui/interface.cpp
index 5ee935cf..fabeb003 100755
--- a/bsnes/ui/interface.cpp
+++ b/bsnes/ui/interface.cpp
@@ -137,3 +137,7 @@ int16_t Interface::input_poll(bool port, SNES::Input::Device device, unsigned in
 void Interface::message(const string &text) {
   MessageWindow::information(mainWindow, text);
 }
+
+string Interface::path(SNES::Cartridge::Slot slot, const string &pathname) {
+  return ::path.load(slot, pathname);
+}
diff --git a/bsnes/ui/interface.hpp b/bsnes/ui/interface.hpp
index 34f795c0..321a87f9 100755
--- a/bsnes/ui/interface.hpp
+++ b/bsnes/ui/interface.hpp
@@ -21,6 +21,7 @@ struct Interface : public SNES::Interface {
   int16_t input_poll(bool port, SNES::Input::Device device, unsigned index, unsigned id);
 
   void message(const string &text);
+  string path(SNES::Cartridge::Slot slot, const string &path);
 };
 
 extern Palette palette;
diff --git a/bsnes/ui/path/path.cpp b/bsnes/ui/path/path.cpp
index 3a93d597..0b8e0cf2 100755
--- a/bsnes/ui/path/path.cpp
+++ b/bsnes/ui/path/path.cpp
@@ -62,14 +62,24 @@ string Path::load(SNES::Cartridge::Slot slot, const string &type, const string &
     case SNES::Cartridge::Slot::SufamiTurboA: romPath = cartridge.sufamiTurboAName; break;
     case SNES::Cartridge::Slot::SufamiTurboB: romPath = cartridge.sufamiTurboBName; break;
     case SNES::Cartridge::Slot::GameBoy: romPath = cartridge.gameBoyName; break;
+
+    case SNES::Cartridge::Slot::NECDSP: romPath = cartridge.baseName; break;
+    case SNES::Cartridge::Slot::MSU1: romPath = cartridge.baseName; break;
+    case SNES::Cartridge::Slot::Serial: romPath = cartridge.baseName; break;
   }
 
   string path = romPath;
+  if(slot == SNES::Cartridge::Slot::NECDSP && necdsp != "") path = necdsp;
+  if(slot == SNES::Cartridge::Slot::MSU1 && msu1 != "") path = string(msu1, notdir(path));
+  if(slot == SNES::Cartridge::Slot::Serial && serial != "") path = string(serial, notdir(path));
+
   if(type == "srm" && srm != "") path = string(srm, notdir(path));
-  if(type == "bsp" && srm != "") path = string(srm, notdir(path));
-  if(type == "bss" && srm != "") path = string(srm, notdir(path));
-  if(type == "sav" && srm != "") path = string(srm, notdir(path));
+  if(type == "bsp" && bsp != "") path = string(bsp, notdir(path));
+  if(type == "bss" && bss != "") path = string(bss, notdir(path));
+  if(type == "sts" && sts != "") path = string(sts, notdir(path));
+  if(type == "sav" && sav != "") path = string(sav, notdir(path));
   if(type == "rtc" && rtc != "") path = string(rtc, notdir(path));
+
   if(type == "bsa" && bsa != "") path = string(bsa, notdir(path));
   if(type == "bst" && bst != "") path = string(bst, notdir(path));
   if(type == "cht" && cht != "") path = string(cht, notdir(path));
@@ -95,6 +105,10 @@ string Path::load(SNES::Cartridge::Slot slot, const string &type, const string &
     path = string(dir(base), path);
   }
 
+  if(slot == SNES::Cartridge::Slot::NECDSP) return { dir(path), type };
+  if(slot == SNES::Cartridge::Slot::MSU1) return { path, type };
+  if(slot == SNES::Cartridge::Slot::Serial) return { path, type };
+
   return { path, suffix, ".", type };
 }
 
@@ -119,8 +133,16 @@ Path::Path() {
   attach(sufamiTurboBios = "", "sufamiTurboBios");
   attach(superGameBoyBios = "", "superGameBoyBios");
 
+  attach(necdsp = "", "necdsp");
+  attach(msu1 = "", "msu1");
+  attach(serial = "", "serial");
+
   attach(srm = "", "srm");
   attach(rtc = "", "rtc");
+  attach(bss = "", "bss");
+  attach(bsp = "", "bsp");
+  attach(sts = "", "sts");
+  attach(sav = "", "sav");
 
   attach(bsa = "", "bsa");
   attach(bst = "", "bst");
diff --git a/bsnes/ui/path/path.hpp b/bsnes/ui/path/path.hpp
index 0eadc79b..54a54d1a 100755
--- a/bsnes/ui/path/path.hpp
+++ b/bsnes/ui/path/path.hpp
@@ -14,8 +14,16 @@ struct Path : public configuration {
   string sufamiTurboBios;
   string superGameBoyBios;
 
+  string necdsp;
+  string msu1;
+  string serial;
+
   string srm;
   string rtc;
+  string bss;
+  string bsp;
+  string sts;
+  string sav;
 
   string bsa;
   string bst;