4cade/src/prelaunch/thunder.bombs.a

;license:MIT
;(c) 2019 by Frank M., 2022 by qkumba

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

    !source "src/prelaunch/common.a"

         lda   #$60
         sta   $887F
         lda   #<fakewait
         sta   $8823+1
         sta   $882A+2
         lda   #>fakewait
         sta   $8823+2
         sta   $882B+2    ; fix timing of title screen on //gs
         jsr   $87F9      ; load, show title

         +ENABLE_ACCEL
         lda   #$60
         sta   $7818
         jsr   $7800      ; unpack/setup

         lda   #0
         sta   $3F2       ; reset vector B8F2
         sta   $3FE       ; IRQ vector B8FE

         +READ_RAM2_NO_WRITE
         lda   MockingboardStuff
         beq   ++
         tax
         and   #7
         ora   #$C0
         sta   $341
         txa
         ldy   #6         ; sound/speech
         asl
         bcs   +
         ldy   #4         ; sound ii
         asl
         bmi   +
         dey              ; sound i
+
         sty   $340
         jsr   $7CB4
++
         lda   MachineStatus
         and   #CHEATS_ENABLED
         beq   +
         lda   #$AD
         sta   $E39       ; don't decrease lives
+
         jsr   DisableAccelerator
         +READ_ROM_NO_WRITE

         lda   $323
         jmp   $781B

fakewait sec
wait1    pha
wait2    sbc   #$01
         bne   wait2
         pla
         sbc   #$01
         bne   wait1
         rts

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