4cade/src/prelaunch/aliens.a

;license:MIT
;(c) 2020 by qkumba

!cpu 6502
!to "build/PRELAUNCH.INDEXED/ALIENS",plain
*=$106

    !source "src/prelaunch/common.a"

         +ENABLE_ACCEL
         lda   #$60
         sta   $B9B
         jsr   $800       ; load "DOS"
         lda   #$60
         sta   $2429
         jsr   $22AA      ; decrypt
         +DISABLE_ACCEL
         jmp   $1FA0

!if * > $1C0 {
  !error "code is too large, ends at ", *
}