// 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/04/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.)

  // R2 = 0
  @R2
  M = 0
  // i = 0
  @i
  M = 0

(LOOP)
  // (if i >= R0 <=> if i - R0 >= 0) goto END
  @i
  D = M
  @R0
  D = D - M
  @END
  D;JGE

  // R2 = R2 + R1
  @R1
  D = M
  @R2
  M = M + D

  // i++
  @i
  M = M + 1

  // goto LOOP
  @LOOP
  0;JMP

(END)
  @END
  0;JMP