Chapter 4 multiplication passing test.

computationclub · Jan 13, 2015 · 509ba5f · 509ba5f
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diff --git a/projects/04/mult/Mult.asm b/projects/04/mult/Mult.asm
@@ -6,4 +6,26 @@
 // Multiplies R0 and R1 and stores the result in R2.
 // (R0, R1, R2 refer to RAM[0], RAM[1], and RAM[2], respectively.)
 
-// Put your code here.
+// set R2 to 0
+@R2
+M=0
+(LOOP)
+// jump to "end" if R0 is zero
+@R0
+D=M
+@END
+D;JEQ
+// add R1 to R2
+@R1
+D=M
+@R2
+M=D+M
+// decrement R0
+@R0
+M=M-1
+// jump to "loop"
+@LOOP
+0;JMP
+(END)
+@END
+0;JMP
diff --git a/projects/04/mult/Mult.hack b/projects/04/mult/Mult.hack
@@ -0,0 +1,16 @@
+0000000000000010
+1110101010001000
+0000000000000000
+1111110000010000
+0000000000001110
+1110001100000010
+0000000000000001
+1111110000010000
+0000000000000010
+1111000010001000
+0000000000000000
+1111110010001000
+0000000000000010
+1110101010000111
+0000000000001110
+1110101010000111
diff --git a/projects/04/mult/Mult.out b/projects/04/mult/Mult.out
@@ -0,0 +1,7 @@
+|  RAM[0]  |  RAM[1]  |  RAM[2]  |
+|       0  |       0  |       0  |
+|       1  |       0  |       0  |
+|       0  |       2  |       0  |
+|       3  |       1  |       3  |
+|       2  |       4  |       8  |
+|       6  |       7  |      42  |