
void main()
main: scope:[main]  from
  [0] *IRQ = &irq
  to:main::@return
main::@return: scope:[main]  from main
  [1] return 
  to:@return

__interrupt(rom_min_c64) void irq()
irq: scope:[irq]  from
  [2] *SCREEN = ++ *SCREEN
  to:irq::@return
irq::@return: scope:[irq]  from irq
  [3] return 
  to:@return
