diff --git a/tools/gfx4snes/readme.md b/tools/gfx4snes/readme.md
index 4feb4a6b..caaaf663 100644
--- a/tools/gfx4snes/readme.md
+++ b/tools/gfx4snes/readme.md
@@ -34,7 +34,7 @@ where filename is a 256 color PNG or BMP file
 - `-g` Include high priority bit in map
 - `-y` Generate map in pages of 32x32 blocks (good for scrolling)
 - `-R` No tile reduction (not advised)  
-- `-M (1|5|6|7)` Convert the whole picture for mode 1, 5, 6 or 7 format [1]
+- `-M (1|5|6|7||9)` Convert the whole picture for mode 1, 5, 6 or 7 format, 9 is without map constraint [1]
   
 ### Palette options
 - `-a` Rearrange palette, and preserve palette numbers in tilemap  
diff --git a/tools/gfx4snes/src/arguments.c b/tools/gfx4snes/src/arguments.c
index 856b35e1..fa8c3c00 100644
--- a/tools/gfx4snes/src/arguments.c
+++ b/tools/gfx4snes/src/arguments.c
@@ -108,7 +108,7 @@ cmdp_action_t argument_callback(cmdp_process_param_st *params)
 	}
 
 	// check map mode (default is 1)
-	if ( (gfx4snes_args.mapscreenmode!=1) && (gfx4snes_args.mapscreenmode!=5) && (gfx4snes_args.mapscreenmode!=6) && (gfx4snes_args.mapscreenmode!=7) )
+	if ( (gfx4snes_args.mapscreenmode!=1) && (gfx4snes_args.mapscreenmode!=5) && (gfx4snes_args.mapscreenmode!=6) && (gfx4snes_args.mapscreenmode!=7) && (gfx4snes_args.mapscreenmode!=9) )
 	{
 		fatal("incorrect value for map mode format [%d]\nconversion terminated.", gfx4snes_args.mapscreenmode); // exit gfx4snes at this point
 	}
@@ -139,7 +139,7 @@ cmdp_action_t argument_callback(cmdp_process_param_st *params)
 			gfx4snes_args.paletteoutput=nbcols;
 	}
 	// check palette entry (default is 0)
-	if ( (gfx4snes_args.paletteentry<0) || (gfx4snes_args.paletteentry>2047) )
+	if ( (gfx4snes_args.paletteentry<0) || (gfx4snes_args.paletteentry>7) )
 	{
 		fatal("incorrect value for palette entry [%d]\nconversion terminated.", gfx4snes_args.paletteentry); // exit gfx4snes at this point
 	}
diff --git a/tools/gfx4snes/src/gfx4snes.c b/tools/gfx4snes/src/gfx4snes.c
index 746a1154..c4dcc248 100644
--- a/tools/gfx4snes/src/gfx4snes.c
+++ b/tools/gfx4snes/src/gfx4snes.c
@@ -54,7 +54,7 @@ static cmdp_command_st gfx4snes_command = {
             {0, 0, "Palettes options:\n", CMDP_TYPE_NONE, NULL,NULL},
 			{'a', "pal-rearrange", "rearrange palette and preserve palette numbers in tilemap", CMDP_TYPE_BOOL, &gfx4snes_args.paletterearrange},
 			{'d', "pal-rounded", "palette rounding (to a maximum value of 63)", CMDP_TYPE_BOOL, &gfx4snes_args.paletteround},
-			{'e', "pal-entry", "palette entry to add to map tiles {0..15}", CMDP_TYPE_INT4, &gfx4snes_args.paletteentry},
+			{'e', "pal-entry", "palette entry to add to map tiles {0..7}", CMDP_TYPE_INT4, &gfx4snes_args.paletteentry},
 			{'o', "pal-col-output", "number of colors to output to filename.pal {0..256}", CMDP_TYPE_INT4, &gfx4snes_args.paletteoutput},
 			{'p', "pal-output", "include palette for output", CMDP_TYPE_BOOL, &gfx4snes_args.palettesave},
 			{'u', "pal-col-use", "number of colors to use {4,16,128,[256]}", CMDP_TYPE_INT4, &gfx4snes_args.palettecolors},
diff --git a/tools/gfx4snes/src/maps.c b/tools/gfx4snes/src/maps.c
index 2bad7edf..4392bfc7 100644
--- a/tools/gfx4snes/src/maps.c
+++ b/tools/gfx4snes/src/maps.c
@@ -65,7 +65,11 @@ unsigned short *map_convertsnes (unsigned char *imgbuf, int *nbtiles, int blksiz
         blksizex = 16;
         if (!isquiet) info("will use specific mode 5 & 6 values %d block for x, with tile size %dx%d...",nbblockx,16,blksizey);
     }
-
+    // if mode 9, just put an infomation message 
+    if (graphicmode==9) 
+    {
+        if (!isquiet) info("will use specific mode without constrainst for %dx%d blocks with tile size %dx%d...",nbblockx,nbblocky,blksizex,blksizey);
+    }
     // size of a tile block (64 bytes for a 8x8 block)
     sizetile = blksizex*blksizey;
 
@@ -77,15 +81,13 @@ unsigned short *map_convertsnes (unsigned char *imgbuf, int *nbtiles, int blksiz
         fatal("can't allocate enough memory for the buffer in map_convertsnes");
     }
   
-    // clear map
-    //memset(map, 0, nbblockx * nbblocky * sizeof(unsigned short));
+    // some information
     if (!isquiet) info("managed a map of %dx%d tiles of %dx%d pixels...",nbblockx,nbblocky,blksizex,blksizey);
     if ( !isquiet && is32size) info("rearrange map for 32x32 scrolling...");
 
     // add the palette number to tiles
     if (!isquiet) info("add palette entry #%d to tiles in map...",offsetpal);
     currenttile = 0;
-
     for (y = 0; y < nbblocky; y++)
     {
         for (x = 0; x < nbblockx; x++)
@@ -93,7 +95,8 @@ unsigned short *map_convertsnes (unsigned char *imgbuf, int *nbtiles, int blksiz
             // get the palette number (0-7 for both 4 & 16 color mode)
             paletteno = (nbcolors != 4) ? (imgbuf[currenttile * sizetile] >> 4) & 0x07 : (imgbuf[currenttile * sizetile] >> 2) & 0x07;
             tilevalue = ((paletteno + offsetpal) << 10);
-
+            if ((tilevalue>>10)>=8) warning ("out of bounds palette %d for tile %d",currenttile,paletteno);
+            
             if ((graphicmode==5) || (graphicmode==6))  
             {
                 map[y * nbblockx + x] = tilevalue;
@@ -123,6 +126,10 @@ unsigned short *map_convertsnes (unsigned char *imgbuf, int *nbtiles, int blksiz
                     else
                         map[(y + 96 - 32) * 32 + x - 32] = tilevalue;
                 }
+                else if (graphicmode==9)
+                {
+                    map[y * nbblockx + x] = tilevalue;
+                }
                 else if (is32size == 1)
                 {
                     // create pages of 32x32
@@ -275,7 +282,7 @@ unsigned short *map_convertsnes (unsigned char *imgbuf, int *nbtiles, int blksiz
                     int idx = x_mult * 1024 + y * 32 + new_x;
                     map[idx] += tilevalue;
                 }
-                else // 32x32 or 128x128 screen
+                else // 32x32 or 128x128 screen or with no constrainst
                 {
                     map[y * nbblockx + x] += tilevalue;
                 }