add verilog files for project one through five

04_Machine_Language/leds.asm

@@ -3,3 +3,10 @@
 // read the button state and output to led
 
 // Put your code here:
+
+@BUT
+D=M
+@LED
+M=!D
+@0
+0;JMP

04_Machine_Language/mult.asm

@@ -31,8 +31,41 @@ M=1
 // Put your code here:
 
 
+@R2
+M=0
+@DEBUG2
+M=0
+@itr
+M=0
 
+// loop declaration
+// D = R1 - itr
+// if 0 jump to @STOP
+// else continue
+    (LOOP)
+@itr
+D=M
+@R0
+D=M-D
+@DEBUG0
+M=D
+@END
+D;JEQ
 
+// R2 = R0 + R2
+// itr = itr + 1
+@R1
+D=M
+@R2
+DM=D+M
+@DEBUG2
+M=D
+@itr
+M=M+1
+
+// back to loop declaration
+@LOOP
+0;JMP
 
 // till here!