%import textio
%zeropage basicsafe

main {
  sub start() {
    uword xx=$2000
    ubyte yy=$30
    ubyte zz=9
    ; sys.memset(xx+200, yy*2, zz+yy)

    @($c030) = 10
    @($c000+yy) *= 2
    txt.print_ub(@($c030))
  }
}