Complete project 4

Assignments/4_Machine_Language/Mult.asm

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+// This file is part of www.nand2tetris.org
+// and the book "The Elements of Computing Systems"
+// by Nisan and Schocken, MIT Press.
+// File name: projects/4/Mult.asm
+
+// Multiplies R0 and R1 and stores the result in R2.
+// (R0, R1, R2 refer to RAM[0], RAM[1], and RAM[2], respectively.)
+// The algorithm is based on repetitive addition.
+
+@R2
+M=0
+@R1
+D=M
+@END
+D;JEQ
+(STEP)
+@R2
+D=M
+@R0
+D=D+M
+@R2
+M=D
+@R1
+DM=M-1
+@STEP
+D;JGT
+@END