diff --git a/bsnes.cfg b/bsnes.cfg
index f9249f54..006dea98 100644
--- a/bsnes.cfg
+++ b/bsnes.cfg
@@ -1,4 +1,4 @@
-#[bsnes v0.007 configuration file]
+#[bsnes v0.007a configuration file]
 
 #[video mode]
 #  0: 256x224w
diff --git a/bsnes_g2.exe b/bsnes_g2.exe
index 2b27685d..aff51ac7 100644
Binary files a/bsnes_g2.exe and b/bsnes_g2.exe differ
diff --git a/demo_1.smc b/demo_1.smc
deleted file mode 100644
index b2716e5b..00000000
Binary files a/demo_1.smc and /dev/null differ
diff --git a/demo_1.srm b/demo_1.srm
deleted file mode 100644
index e2c8fe92..00000000
Binary files a/demo_1.srm and /dev/null differ
diff --git a/demo_2.smc b/demo_2.smc
deleted file mode 100644
index fb32878f..00000000
Binary files a/demo_2.smc and /dev/null differ
diff --git a/demo_2.srm b/demo_2.srm
deleted file mode 100644
index e2c8fe92..00000000
Binary files a/demo_2.srm and /dev/null differ
diff --git a/src/memory/bmemory/bmemory.cpp b/src/memory/bmemory/bmemory.cpp
index f9affb43..9d4b1827 100644
--- a/src/memory/bmemory/bmemory.cpp
+++ b/src/memory/bmemory/bmemory.cpp
@@ -113,28 +113,17 @@ uint32 b, w;
   }
 }
 
-void bROM::load_sram(uint8 *buffer, uint32 size) {
+void bROM::load_sram(Reader *rf) {
   if(rom_loaded == false)return;
 
-  if(size > sram_size) {
-    memcpy(sram_data, buffer, sram_size);
-  } else {
-    memset(sram_data, 0, sram_size);
-    memcpy(sram_data, buffer, size);
-  }
+  rf->read(&sram_data, sram_size);
 }
 
-uint32 bROM::save_sram(uint8 **buffer) {
-uint8 *t;
-  if(rom_loaded == false)return 0;
-  if(!sram_size)return 0;
+void bROM::save_sram(Writer *wf) {
+  if(rom_loaded == false)return;
+  if(!sram_size)return;
 
-  if(*buffer) {
-    t = (uint8*)memalloc(sram_size, "bROM::save_sram");
-    memcpy(t, sram_data, sram_size);
-    *buffer = t;
-  }
-  return sram_size;
+  wf->write(sram_data, sram_size);
 }
 
 void bROM::load_rom(Reader *rf) {
@@ -176,12 +165,6 @@ end:
   case 6:sram_size =  64 * 1024;break;
   case 7:sram_size = 128 * 1024;break;
   }
-  if(sram_size) {
-    sram_data = (uint8*)memalloc(sram_size, "bROM::sram_data");
-    memset(sram_data, 0, sram_size);
-  } else {
-    sram_data = 0;
-  }
 
   dprintf("Image Name : \"%s\"", cart_title);
   dprintf("Image Type : %s", (mapper == LOROM)?"LoROM":"HiROM");
diff --git a/src/memory/bmemory/bmemory.h b/src/memory/bmemory/bmemory.h
index c45e079f..fc89a116 100644
--- a/src/memory/bmemory/bmemory.h
+++ b/src/memory/bmemory/bmemory.h
@@ -8,13 +8,13 @@ enum { LOROM = 0, HIROM = 1 };
 uint8  *data, *sram_data;
 uint8  mapper;
 uint32 size, sram_size;
-  void   load_rom(Reader *rf);
-  void   load_sram(uint8 *buffer, uint32 size);
-  uint32 save_sram(uint8 **buffer);
-  void   unload();
-  uint8  read (uint32 addr);
-  void   write(uint32 addr, byte value);
-  void   write_protect(bool yn);
+  void  load_rom(Reader *rf);
+  void  load_sram(Reader *rf);
+  void  save_sram(Writer *wf);
+  void  unload();
+  uint8 read (uint32 addr);
+  void  write(uint32 addr, byte value);
+  void  write_protect(bool yn);
 
   bROM();
   ~bROM();
diff --git a/src/memory/memory.h b/src/memory/memory.h
index 61812599..48bed7d6 100644
--- a/src/memory/memory.h
+++ b/src/memory/memory.h
@@ -11,11 +11,11 @@ enum { WRAP_NONE = 0, WRAP_BANK = 1, WRAP_PAGE = 2 };
 
 class ROM : public Memory {
 public:
-  virtual void   load_rom(Reader *rf) = 0;
-  virtual void   load_sram(uint8 *buffer, uint32 size) = 0;
-  virtual uint32 save_sram(uint8 **buffer) = 0;
-  virtual void   unload() = 0;
-  virtual void   write_protect(bool yn) = 0;
+  virtual void load_rom(Reader *rf) = 0;
+  virtual void load_sram(Reader *rf) = 0;
+  virtual void save_sram(Writer *wf) = 0;
+  virtual void unload() = 0;
+  virtual void write_protect(bool yn) = 0;
 };
 
 class MMIO : public Memory {
diff --git a/src/reader/reader.cpp b/src/reader/reader.cpp
index d430885b..f4b1a90e 100644
--- a/src/reader/reader.cpp
+++ b/src/reader/reader.cpp
@@ -1,24 +1,38 @@
 #include "../base.h"
 
-bool FileReader::open(char *fn) {
-/* is the filename too short to be a file? */
-  if(strlen(fn) < 4)return false;
+uint32 FileReader::size() {
+  return fsize;
+}
 
-int i;
-  for(i=strlen(fn) - 1;i>=0;i--) {
-    if(fn[i] == '.')break;
+/*
+  This function will allocate memory even if open() fails.
+  This is needed so that when SRAM files do not exist, the
+  memory for the SRAM data will be allocated still.
+
+  The memory is flushed to 0x00 when no file is opened.
+*/
+void FileReader::read(uint8 **buffer, uint32 length) {
+uint8 *data;
+  if(length == 0) {
+  /* read the entire file into RAM */
+    data = (uint8*)memalloc(fsize);
+    memset(data, 0, fsize);
+    if(fp)fread(data, 1, fsize, fp);
+  } else if(length > fsize) {
+  /* read the entire file into RAM, pad the rest with 0x00s */
+    data = (uint8*)memalloc(length);
+    memset(data, 0, length);
+    if(fp)fread(data, 1, fsize, fp);
+  } else { //fsize >= length
+  /* read as much of the file as possible, truncate the rest */
+    data = (uint8*)memalloc(length);
+    memset(data, 0, length);
+    if(fp)fread(data, 1, length, fp);
   }
-  if(fn[i] != '.')return false;
-
-char *filetype = fn + i;
-/* make sure we support this file format before loading it */
-  if(stricmp(filetype, ".smc") &&
-     stricmp(filetype, ".swc") &&
-     stricmp(filetype, ".fig") &&
-     stricmp(filetype, ".ufo") &&
-     stricmp(filetype, ".gd3") &&
-     stricmp(filetype, ".078"))return false;
+  *buffer = data;
+}
 
+bool FileReader::open(uint8 type, char *fn) {
   fp = fopen(fn, "rb");
   if(!fp)return false;
 
@@ -26,12 +40,7 @@ char *filetype = fn + i;
   fsize = ftell(fp);
   fseek(fp, 0, SEEK_SET);
 
-  if(!stricmp(filetype, ".smc") ||
-     !stricmp(filetype, ".swc") ||
-     !stricmp(filetype, ".fig") ||
-     !stricmp(filetype, ".ufo") ||
-     !stricmp(filetype, ".gd3") ||
-     !stricmp(filetype, ".078")) {
+  if(type == TYPE_ROM) {
   /* remove header if it exists */
     if((fsize & 0xfff) == 0x200) {
       fsize -= 0x200;
@@ -48,29 +57,23 @@ char *filetype = fn + i;
   return true;
 }
 
-void FileReader::read(uint8 **buffer, uint32 length) {
-uint8 *data;
-  if(length == 0) {
-  /* read the entire file into RAM */
-    data = (uint8*)memalloc(fsize);
-    fread(data, 1, fsize, fp);
-  } else if(length > fsize) {
-  /* read the entire file into RAM, pad the rest with 0x00s */
-    data = (uint8*)memalloc(length);
-    memset(data, 0, length);
-    fread(data, 1, fsize, fp);
-  } else { //fsize >= length
-  /* read as much of the file as possible, truncate the rest */
-    data = (uint8*)memalloc(length);
-    fread(data, 1, length, fp);
-  }
-  *buffer = data;
-}
-
-uint32 FileReader::size() {
-  return fsize;
-}
-
 void FileReader::close() {
   if(fp)fclose(fp);
 }
+
+void FileWriter::write(uint8 *buffer, uint32 length) {
+  if(!fp)return;
+
+  fwrite(buffer, 1, length, fp);
+}
+
+bool FileWriter::open(char *fn) {
+  fp = fopen(fn, "wb");
+  if(!fp)return false;
+
+  return true;
+}
+
+void FileWriter::close() {
+  if(fp)fclose(fp);
+}
diff --git a/src/reader/reader.h b/src/reader/reader.h
index dc5ef039..38fea7dd 100644
--- a/src/reader/reader.h
+++ b/src/reader/reader.h
@@ -10,11 +10,33 @@ FILE  *fp;
 uint32 fsize;
 
 public:
+enum {
+  TYPE_ROM  = 0,
+  TYPE_SRAM = 1
+};
   uint32 size();
   void   read(uint8 **buffer, uint32 length = 0);
-  bool   open(char *fn);
+  bool   open(uint8 type, char *fn);
   void   close();
 
   FileReader() { fp = 0; fsize = 0; }
   ~FileReader() { if(fp)fclose(fp); }
 };
+
+class Writer {
+public:
+  virtual void write(uint8 *buffer, uint32 length);
+};
+
+class FileWriter : public Writer {
+private:
+FILE *fp;
+
+public:
+  void write(uint8 *buffer, uint32 length);
+  bool open(char *fn);
+  void close();
+
+  FileWriter() { fp = 0; }
+  ~FileWriter() { if(fp)fclose(fp); }
+};
diff --git a/src/win/lib.cpp b/src/win/lib.cpp
index 8486ece7..03e21d53 100644
--- a/src/win/lib.cpp
+++ b/src/win/lib.cpp
@@ -67,32 +67,3 @@ va_list args;
     w_console->write(str, Console::DEBUG_MESSAGE);
   }
 }
-
-uint32 load_file(char *fn, uint8 **buffer) {
-FILE *fp;
-uint8 *data;
-int fsize;
-  fp = fopen(fn, "rb");
-  if(!fp)return 0;
-  fseek(fp, 0, SEEK_END);
-  fsize = ftell(fp);
-  if(!fsize) {
-    fclose(fp);
-    return 0;
-  }
-  fseek(fp, 0, SEEK_SET);
-  data = (uint8*)memalloc(fsize);
-  fread(data, 1, fsize, fp);
-  fclose(fp);
-  *buffer = data;
-  return fsize;
-}
-
-bool save_file(char *fn, uint8 *data, uint32 size) {
-FILE *fp;
-  fp = fopen(fn, "wb");
-  if(!fp)return false;
-  fwrite(data, 1, size, fp);
-  fclose(fp);
-  return true;
-}
diff --git a/src/win/rom.cpp b/src/win/rom.cpp
index 7a00dc43..7e700d59 100644
--- a/src/win/rom.cpp
+++ b/src/win/rom.cpp
@@ -22,23 +22,19 @@ bool ROMImage::load() {
 
   dprintf("* Loading [%s]...", rom_fn);
 
-Reader *rf = new FileReader();
-FileReader *f_rf = static_cast<FileReader*>(rf);
-  if(!f_rf->open(rom_fn)) {
+FileReader *rf = new FileReader();
+  if(!rf->open(FileReader::TYPE_ROM, rom_fn)) {
     alert("Error loading image file [%s]!", rom_fn);
     return false;
   }
-  mem_bus->rom->load_rom(rf);
-  f_rf->close();
-  delete rf;
+  mem_bus->rom->load_rom(static_cast<Reader*>(rf));
+  rf->close();
 
-uint8 *sram_data;
-uint32 sram_size;
-  sram_size = load_file(sram_fn, &sram_data);
-  if(sram_size) {
-    mem_bus->rom->load_sram(sram_data, sram_size);
-    memfree(sram_data);
-  }
+  rf->open(FileReader::TYPE_SRAM, sram_fn);
+  mem_bus->rom->load_sram(static_cast<Reader*>(rf));
+  rf->close();
+
+  delete(rf);
 
   file_loaded = true;
   bsnes->debugger_activate();
@@ -48,13 +44,12 @@ uint32 sram_size;
 void ROMImage::unload() {
   if(file_loaded == false)return;
 
-uint8 *sram_data;
-uint32 sram_size;
-  sram_size = mem_bus->rom->save_sram(&sram_data);
-  if(sram_size) {
-    save_file(sram_fn, sram_data, sram_size);
-    memfree(sram_data);
-  }
+FileWriter *wf = new FileWriter();
+  wf->open(sram_fn);
+  mem_bus->rom->save_sram(static_cast<Writer*>(wf));
+  wf->close();
+  delete(wf);
+
   file_loaded = false;
   bsnes->debugger_deactivate();
 
diff --git a/src/win/winmain.cpp b/src/win/winmain.cpp
index 0b81b322..a1afb2f4 100644
--- a/src/win/winmain.cpp
+++ b/src/win/winmain.cpp
@@ -1,5 +1,5 @@
 #define INTERFACE_MAIN
-#define BSNES_VERSION "0.007"
+#define BSNES_VERSION "0.007a"
 #include "winmain.h"
 #include "../base.h"
 
@@ -34,11 +34,18 @@ void term_snes() {
   if(snes)    { delete(snes);    snes    = 0; }
 }
 
+void get_config_fn(string &str) {
+char *t = (char*)malloc(4096);
+  _getcwd(t, 4095);
+  str = t;
+  free(t);
+  str += "\\bsnes.cfg";
+}
+
 int __stdcall WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) {
 MSG msg;
 string cfg_fn;
-  _getcwd(cfg_fn, 4096);
-  cfg_fn += "\\bsnes.cfg";
+  get_config_fn(cfg_fn);
   cfg.load(cfg_fn);
   meminit();
   fps_timer = new fpstimer();