vector routine
  trashes a, z, n
    print

define chrout routine
  inputs a
  trashes a
  @ 65490

define printa routine
  trashes a, z, n
{
    ld a, 65
    call chrout
}

define printb routine
  trashes a, z, n
{
    ld a, 66
    call chrout
}

define main routine
  trashes print, a, z, n
{
    copy printa, print
    call print
    copy printb, print
    call print
}