diff --git a/programs/develop/metcc/trunk/libc/file/fclose.c b/programs/develop/metcc/trunk/libc/file/fclose.c
index 257ec420d1..8373bbf4d9 100644
--- a/programs/develop/metcc/trunk/libc/file/fclose.c
+++ b/programs/develop/metcc/trunk/libc/file/fclose.c
@@ -3,7 +3,7 @@
 int fclose(FILE* file)
 {
 	int res;
-	res=_msys_write_file(file->filename,file->filesize,file->buffer);
+	res=_msys_write_file(file->filename, 0, file->filesize, file->buffer);
 	free(file->buffer);
 	free(file);
 	return res;
diff --git a/programs/develop/metcc/trunk/libc/file/fflush.c b/programs/develop/metcc/trunk/libc/file/fflush.c
index a6f28e86b4..9344a6d733 100644
--- a/programs/develop/metcc/trunk/libc/file/fflush.c
+++ b/programs/develop/metcc/trunk/libc/file/fflush.c
@@ -3,5 +3,5 @@ int fflush(FILE* file)
 {
 	if ((file->mode & 3)==FILE_OPEN_READ)
   		return 0;
-  	return _msys_file_write(file->filename,file->filesize,file->buffer) ? EOF : 0;
+  	return _msys_file_write(file->filename, 0, file->filesize, file->buffer) ? EOF : 0;
 }
\ No newline at end of file
diff --git a/programs/develop/metcc/trunk/libc/file/fopen.c b/programs/develop/metcc/trunk/libc/file/fopen.c
index 7324476009..52b696abdb 100644
--- a/programs/develop/metcc/trunk/libc/file/fopen.c
+++ b/programs/develop/metcc/trunk/libc/file/fopen.c
@@ -40,7 +40,7 @@ FILE* fopen(const char* filename, const char *mode)
 	res->filename=0;
 	res->mode=imode;
 //check if file exists
-        res=_msys_read_file(filename,0,0,0,&res->filesize);
+        res=_msys_read_file(filename, 0, 0, 0, &res->filesize);
         if (res==5)
         {
           if ((imode & 3) == FILE_OPEN_READ)
@@ -48,7 +48,7 @@ FILE* fopen(const char* filename, const char *mode)
             free(res);
             return 0;
           }
-          res=_msys_write_file(filename,0,0);
+          res=_msys_create_file(filename);
           if (res!=0)
           {
             free(res);
diff --git a/programs/develop/metcc/trunk/libc/include/mesys.h b/programs/develop/metcc/trunk/libc/include/mesys.h
index 7e263da754..b263eed2b0 100644
--- a/programs/develop/metcc/trunk/libc/include/mesys.h
+++ b/programs/develop/metcc/trunk/libc/include/mesys.h
@@ -17,7 +17,8 @@ extern void stdcall _msys_draw_window(int xcoord,int ycoord, int xsize,
 			       int captioncolor,int windowtype,int bordercolor);
 extern int  stdcall _msys_read_file(char* filename,int fileoffset,int size,void* data,
                      int* filesize);
-extern int  stdcall _msys_write_file(char* filename,int size,void* data);
+extern int  stdcall _msys_write_file(char* filename,int fileoffset, int size, void* data);
+extern int  stdcall _msys_create_file(char* filename);
 extern void stdcall _msys_run_program(char* filename,char* parameters);
 extern void stdcall _msys_debug_out(int c);
 extern void debug_out_str(char* str);
diff --git a/programs/develop/metcc/trunk/libc/mesys/_mesys.asm b/programs/develop/metcc/trunk/libc/mesys/_mesys.asm
deleted file mode 100644
index 6b3e809726..0000000000
--- a/programs/develop/metcc/trunk/libc/mesys/_mesys.asm
+++ /dev/null
@@ -1,156 +0,0 @@
-format ELF
-section '.text' executable
-
-public _msys_draw_window
-_msys_draw_window:
-;arg1 - xcoord
-;arg2 - ycoord
-;arg3 - xsize
-;arg4 - ysize
-;arg5 - workcolor
-;arg6 - type
-;arg7 - captioncolor
-;arg8 - windowtype
-;arg9 - bordercolor
-  push ebp
-  mov  ebp,esp
-  push ebx esi edi
-  mov  ebx,[ebp+8]
-  shl  ebx,16
-  mov  bx,[ebp+16]
-  mov  ecx,[ebp+12]
-  shl  ecx,16
-  mov  cx,[ebp+20]
-  mov  edx,[ebp+28]
-  shl  edx,24
-  add  edx,[ebp+24]
-  mov  esi,[ebp+36]
-  shl  esi,24
-  add  esi,[ebp+32]
-  mov  edi,[ebp+40]
-  xor  eax,eax
-  int  0x40
-  pop  edi esi ebx
-  pop  ebp
-  ret
-
-public _msys_read_file
-_msys_read_file:
-;arg1 - file name
-;arg2 - file offset
-;arg3 - size to read
-;arg4 - data
-;arg5 - temp buffer
-;arg6 - file size
-  push	ebp
-  mov	ebp,esp
-  xor	eax,eax
-  mov	[file_struct.operation],eax
-  mov	eax,[ebp+12]
-  mov	[file_struct.offset],eax
-  mov	eax,[ebp+16]
-  mov	[file_struct.offset],eax
-  mov	eax,[ebp+20]
-  mov	[file_struct.offset],eax
-  mov	[file_struct.temp_buffer],temp_buffer
-  mov	edx,[ebp+8]
-  call	copy_file_name
-  push	ebx
-  mov	ebx,file_struct
-  mov	eax,58
-  int	0x40
-  mov	ecx,[ebp+28]
-  test	ecx,ecx
-  jz	.no_file_size
-  mov	[ecx],ebx
-.no_file_size:
-  pop	ebx
-  pop	ebp
-  ret
-
-copy_file_name:
-  push	esi edi
-  cld
-  mov	edi,edx
-  xor	eax,eax
-  xor	ecx,ecx
-  dec	ecx
-  repnz scasb
-  not	ecx
-  mov	edi,file_struct.path
-  mov	esi,edx
-  rep	movsb
-  pop	edi esi
-  ret
-
-public _msys_write_file
-_msys_write_file:
-;arg1 - file name
-;arg2 - size
-;arg3 - data
-  push	ebp
-  mov	ebp,esp
-  xor	eax,eax
-  mov	[file_struct.offset],eax
-  inc	eax
-  mov	[file_struct.operation],eax
-  mov	eax,[ebp+12]
-  mov	[file_struct.size],eax
-  mov	eax,[ebp+16]
-  mov	[file_struct.data],eax
-  mov	[file_struct.temp_buffer],temp_buffer
-  mov	edx,[ebp+8]
-  call	copy_file_name
-  push	ebx
-  mov	eax,58
-  mov	ebx,file_struct
-  int	0x40
-  pop	ebx
-  pop	ebp
-  ret
-
-public _msys_run_program
-_msys_run_program:
-;arg1 - program name
-;arg2 - parameters
-  push	ebp
-  mov	ebp,esp
-  mov	[file_struct.operation],16
-  xor	eax,eax
-  mov	[file_struct.offset],eax
-  mov	[file_struct.data],eax
-  mov	eax,[ebp+12]
-  mov	[file_struct.param],eax
-  mov	[file_struct.temp_buffer],temp_buffer;
-  mov	edx,[ebp+8]
-  call	copy_file_name
-  push	ebx
-  mov	eax,58
-  mov	ebx,file_struct
-  int	0x40
-  pop	ebx
-  pop	ebp
-  ret
-
-public _msys_debug_out
-_msys_debug_out:
-;arg1 - char to out
-  push	ebx
-  mov	ecx,[esp+8]
-  mov	ebx,1
-  mov	eax,63
-  int	0x40
-  pop	ebx
-  ret
-section '.data' writeable
-section '.bss' writeable
-file_struct:
-.operation   rd 1
-.offset      rd 1
-.param:
-.size	     rd 1
-.data	     rd 1
-.temp_buffer rd 1
-.path	     rb 1024
-  temp_buffer rb 4096
-		
\ No newline at end of file
diff --git a/programs/develop/metcc/trunk/libc/mesys/file_58.asm b/programs/develop/metcc/trunk/libc/mesys/file_58.asm
deleted file mode 100644
index 0c56505d94..0000000000
--- a/programs/develop/metcc/trunk/libc/mesys/file_58.asm
+++ /dev/null
@@ -1,108 +0,0 @@
-format ELF
-include "public_stdcall.inc"
-section '.text' executable
-public_stdcall _msys_read_file,20
-;arg1 - file name
-;arg2 - file offset
-;arg3 - size to read
-;arg4 - data
-;arg5 - file size
-  push	ebp
-  mov	ebp,esp
-  xor	eax,eax
-  mov	[file_struct.operation],eax
-  mov	eax,[ebp+12]
-  mov	[file_struct.offset],eax
-  mov	eax,[ebp+16]
-  mov	[file_struct.size],eax
-  mov	eax,[ebp+20]
-  mov	[file_struct.data],eax
-  mov	[file_struct.temp_buffer],temp_buffer
-  mov	edx,[ebp+8]
-  call	copy_file_name
-  push	ebx
-  mov	ebx,file_struct
-  mov	eax,58
-  int	0x40
-  mov	ecx,[ebp+24]
-  test	ecx,ecx
-  jz	.no_file_size
-  mov	[ecx],ebx
-.no_file_size:
-  pop	ebx
-  pop	ebp
-  ret   20
-
-copy_file_name:
-  push	esi edi
-  cld
-  mov	edi,edx
-  xor	eax,eax
-  xor	ecx,ecx
-  dec	ecx
-  repnz scasb
-  not	ecx
-  mov	edi,file_struct.path
-  mov	esi,edx
-  rep	movsb
-  pop	edi esi
-  ret
-
-public_stdcall _msys_write_file,12
-;arg1 - file name
-;arg2 - size
-;arg3 - data
-  push	ebp
-  mov	ebp,esp
-  xor	eax,eax
-  mov	[file_struct.offset],eax
-  inc	eax
-  mov	[file_struct.operation],eax
-  mov	eax,[ebp+12]
-  mov	[file_struct.size],eax
-  mov	eax,[ebp+16]
-  mov	[file_struct.data],eax
-  mov	[file_struct.temp_buffer],temp_buffer
-  mov	edx,[ebp+8]
-  call	copy_file_name
-  push	ebx
-  mov	eax,58
-  mov	ebx,file_struct
-  int	0x40
-  pop	ebx
-  pop	ebp
-  ret   12
-
-public_stdcall _msys_run_program,8
-;arg1 - program name
-;arg2 - parameters
-  push	ebp
-  mov	ebp,esp
-  mov	[file_struct.operation],16
-  xor	eax,eax
-  mov	[file_struct.offset],eax
-  mov	[file_struct.data],eax
-  mov	eax,[ebp+12]
-  mov	[file_struct.param],eax
-  mov	[file_struct.temp_buffer],temp_buffer;
-  mov	edx,[ebp+8]
-  call	copy_file_name
-  push	ebx
-  mov	eax,58
-  mov	ebx,file_struct
-  int	0x40
-  pop	ebx
-  pop	ebp
-  ret   8
-section '.bss' writeable
-file_struct:
-.operation   rd 1
-.offset      rd 1
-.param:
-.size	     rd 1
-.data	     rd 1
-.temp_buffer rd 1
-.path	     rb 1024
-  temp_buffer rb 4096
-
-
diff --git a/programs/develop/metcc/trunk/libc/string/is.c b/programs/develop/metcc/trunk/libc/string/is.c
index 19265ec0d1..9213614423 100644
--- a/programs/develop/metcc/trunk/libc/string/is.c
+++ b/programs/develop/metcc/trunk/libc/string/is.c
@@ -1,5 +1,5 @@
 #include "ctype.h"
-char __is[128] = {
+int __is[128] = {
  0x004, 0x004, 0x004, 0x004, 0x004, 0x004, 0x004, 0x004,
  0x004, 0x104, 0x104, 0x104, 0x104, 0x104, 0x004, 0x004,
  0x004, 0x004, 0x004, 0x004, 0x004, 0x004, 0x004, 0x004,