4cade/src/prelaunch/genesis.a

;license:MIT
;(c) 2020 by qkumba

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

    !source "src/macros.a"

         +ENABLE_ACCEL
         lda   #>(callback-1)
         sta   $3D0A
         lda   #<(callback-1)
         sta   $3D0D
         jmp   $800       ; decompress

callback
         +GET_MACHINE_STATUS
         and   #CHEATS_ENABLED
         beq   +
         lda   #$a5
         sta   $1527      ; patch - don't decrease lives
         sta   $820F      ; patch - don't increase lives
+
         +DISABLE_ACCEL
         jmp   $900

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