diff --git a/src/sys/graphics/main.cpp b/src/sys/graphics/main.cpp
index fafe393..6f60670 100755
--- a/src/sys/graphics/main.cpp
+++ b/src/sys/graphics/main.cpp
@@ -21,9 +21,9 @@
   buf = new TGfx0();
   buf2 = new TGfx0();
   font = new TDPFont(buf);
-  buf->create(400,400,(TPixelFmt *)&def_pixfmt_24bpp);
+  buf->create(400,400,(TPixelFmt *)&def_pixfmt_8bpp);
 //  buf2->create(400,400,(TPixelFmt *)&def_pixfmt_15bpp);
-  buf2->alias(buf,3,3,8,8);
+  buf2->alias(buf,0,3,8,8);
   buf2->putPixel(0,0,1);
   buf2->putPixel(buf2->getMaxX(),buf2->getMaxY(),1);
   buf2->clear(1);
diff --git a/src/sys/graphics/objgfx30.cpp b/src/sys/graphics/objgfx30.cpp
index b094b4c..cd1d841 100755
--- a/src/sys/graphics/objgfx30.cpp
+++ b/src/sys/graphics/objgfx30.cpp
@@ -204,9 +204,9 @@
       asm(
           "  add (%%esi), %%edi  \n"      // add edi, [esi]
           "  mov %%ecx, %%esi    \n"      // mov esi, ecx
-          "  inc %%ebx           \n"      // inc ebx (MaxX)
-          "  inc %%edx           \n"      // inc edx (MaxY)
-          "  mov %%ebx, %%ecx    \n"      // mov ecx, ebx
+          "  inc %%edx           \n"      // inc edx (MaxX)
+          "  inc %%ebx           \n"      // inc ebx (MaxY)
+          "  mov %%edx, %%ecx    \n"      // mov ecx, edx
           "  shl $2, %%ecx       \n"      // shl ecx, 2
           "  sub %%ecx, %%esi    \n"      // sub esi, ecx // adjust for pix size
       "loop32:                   \n"