optimize Mult and Fill assembly

projects/04/fill/Fill.asm

@@ -29,11 +29,6 @@ M=D
 @itr
 M=0
 
-// black if pix = -1
-// white if pix = 0
-@pix
-M=-1
-
 // loop declaration
 // D = reg - itr
 // if 0 jump to @END
@@ -72,33 +67,30 @@ M=M+1
 
 // clear the screen if no key pressed:
 // pix = 0
-// itr = 0
-// addr = 16384
 // back to loop declaration
     (CLEAR)
 @pix
 M=0
 
-@itr
-M=0
-
-@SCREEN
-D=A
-@addr
-M=D
-
 @LOOP
 0;JMP
 
 // paint the screen if no key pressed:
 // pix = -1
-// itr = 0
-// addr = 16384
 // back to loop declaration
     (PAINT)
 @pix
 M=-1
 
+@LOOP
+0;JMP
+
+// main feedback loop
+// itr = 0
+// addr = 16384
+// jump to @CLEAR if no key pressed
+// jump to @PAINT if any key pressed
+    (END)
 @itr
 M=0
 
@@ -107,13 +99,6 @@ D=A
 @addr
 M=D
 
-@LOOP
-0;JMP
-
-// main feedback loop
-// jump to @CLEAR if no key pressed
-// jump to @PAINT if any key pressed
-    (END)
 @KBD
 D=M
 @CLEAR