4cade/src/demo/alien.ambush.a

;license:MIT
;(c) 2022 by qkumba

!cpu 6502
!to "build/DEMO/ALIEN.AMBUSH#060300",plain
*=$300

         !source "src/constants.a"   ; no code in these
         !source "src/macros.a"

         +ENABLE_ACCEL_LC
         +LOAD_XSINGLE title
         +NEW_RESET_VECTOR $3E0      ; overwrites $101 at end of demo cycle
         lda   #$60
         sta   $81c
         jsr   $800       ; decompress
         ldx   #3-1
-        lda   patch,x
         sta   $60CA,x
         sta   $6040,x
         dex
         bpl   -
         +DISABLE_ACCEL
         jmp   $4000

patch    !byte $4C,$E0,$03

title    !byte x_e-x_b
x_b      !text "ALIEN.AMBUSH"
x_e

!if * > $3F0 {
  !error "code is too large, ends at ", *
}