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+// product.jas
+.constant
+OBJREF 0x40			// needed for method invokation - see S.C.O. chapter 4
+.end-constant
+
+.main				// start of program
+	LDC_W OBJREF		// do not forget to push OBJREF on stack!
+	BIPUSH 0x15		// paramater n (i.e., n = 21)
+	BIPUSH 0x09		// paramater m (i.e., m = 9)
+	INVOKEVIRTUAL product
+	HALT			// stops program execution
+.end-main
+
+.method product(n,m)		// takes two arguments ("n" and "m")
+.var
+temp				// change variable names as needed
+.end-var
+
+	// just some code example:
+	BIPUSH 0x00
+	ISTORE temp
+loop:
+  ILOAD m
+  IFEQ end
+  ILOAD n
+	ILOAD temp
+  IADD
+  ISTORE temp
+  BIPUSH 0xFF
+  ILOAD m
+  ISUB
+  ISTORE m
+  GOTO loop
+end:
+	// this is obviously very useful
+	IRETURN
+.end-method