// print a .. z to screen with interrupt

asm(x)

interrupt()
  asm("trap r1 #2")
  asm("add r1 r1 #1")

main()
  asm("mov r1 #interrupt")
  asm("st r1 1000")
  asm("mov r1 #1")
  asm("trap r1 #12 ; enable int")
  asm("mov r1 #10")	
  asm("trap r1 #10 ; set timer1 = 100")
  asm("mov r1 #100")
  asm("trap r1 #11  ; set div = 100")

  i = 32
  while( i < 50 )
    i = i

    