4cade/src/prelaunch/genius.3.a

;license:MIT
;(c) 2020, 2024 by qkumba

!cpu 6502
!to "build/PRELAUNCH.INDEXED/GENIUS.3",plain
*=$106

    !source "src/prelaunch/common.a"

         lda   #$60
         sta   $336
         jsr   $300
         +ENABLE_ACCEL
         lda   #$60
         sta   $9CD
         jsr   $800       ; decompress
         +GET_MACHINE_STATUS
         and   #CHEATS_ENABLED
         pha
         lda   #$60
         sta   $95E2
         lda   #<callback1
         sta   $9684
         lda   #>callback1
         sta   $9685
         jsr   $9592
         pla
         beq   +
         dec   $1A89      ; patch - don't decrease lives
         dec   $1ABC      ; patch - don't increase lives
+
         +LC_REBOOT
         +DISABLE_ACCEL
         inc   $9d        ; game relies on it
         jmp   $95E5

callback1
         lda   #$4C
         sta   $D7D5
         lda   #<callback2
         sta   $D7D6
         lda   #>callback2
         sta   $D7D7
         jmp   $D7C2

callback2
         sec
         sbc   #7
         cmp   #2
         bcc   +
         jmp   $D7E2
+        jmp   $D7D9

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