4cade/src/demo/aquatron.a

;license:MIT
;(c) 2021 by Frank M.

!cpu 6502
!to "res/DEMO/AQUATRON",plain
*=$BD00

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

         +READ_RAM2_WRITE_RAM2
         jsr   EnableAccelerator
         +LOAD_FILE_AT title, $00
         +READ_ROM_NO_WRITE

         lda   #>(callback - 1)
         sta   $5FC3
         lda   #<(callback - 1)
         sta   $5FC6
         jmp   $59C2      ; decompress

callback
         lda   #$4C
         sta   $7AE1
         sta   $7D1D
         lda   #0
         sta   $7AE1+1
         sta   $7D1D+1
         lda   #1
         sta   $7AE1+2
         sta   $7D1D+2     ; set exits

         lda   #$D0
         sta   $7E11
         sta   $7E38
         sta   $7E43
         sta   $7EA0       ; disable sound

         +DISABLE_ACCEL

         jmp   $400

title    !byte x_e-x_b
x_b      !text "X/AQUATRON/AQUATRON"
x_e

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