How to add a way to not die by level boundaries when exiting Debug Mode. (Sonic 1 Hivebrain)

Do you hate the fact that when you go out of bounds, you cant enter debug mode to save you? Well this tutorial is for you!
Reminder: this is for the Hivebrain 2007 dissasembly, the one i'm using is ASM68K.

Firstly, go to KillSonic:
There, you will find this whole batch of code.

Code:

; ---------------------------------------------------------------------------
; Subroutine to    kill Sonic
; ---------------------------------------------------------------------------

; ||||||||||||||| S U B    R O U T    I N E |||||||||||||||||||||||||||||||||||||||


KillSonic:
        tst.w    ($FFFFFE08).w    ; is debug mode    active?
        bne.s    Kill_NoDeath    ; if yes, branch
        move.b    #0,($FFFFFE2D).w ; remove invincibility
        move.b    #6,$24(a0)
        bsr.w    Sonic_ResetOnFloor
        bset    #1,$22(a0)
        move.w    #-$700,$12(a0)
        move.w    #0,$10(a0)
        move.w    #0,$14(a0)
        move.w    $C(a0),$38(a0)
        move.b    #$18,$1C(a0)
        bset    #7,2(a0)
        move.w    #$A3,d0        ; play normal death sound
        cmpi.b    #$36,(a2)    ; check    if you were killed by spikes
        bne.s    Kill_Sound
        move.w    #$A6,d0        ; play spikes death sound

Kill_Sound:
        jsr    (PlaySound_Special).l

Kill_NoDeath:
        moveq    #-1,d0
        rts
; End of function KillSonic

Now that we got here, lets make the new label.
Under Kill_NoDeath:, and just right before the ; End of function, put whatever subroutine name you want. For this tutorial, i put Sonic_AvoidDeath.

Code:

Sonic_AvoidDeath:

Congrats! you made your code! now to make it work.

After the KillSonic label, add this:

Code:

        tst.w    ($FFFFFFFA).w    ;  DE: is debug mode on?
        bne.s    Sonic_AvoidDeath    ; DE: if active, branch

Once you try to build, Uh oh! something went wrong!

You will see that sonic doesn't die, but he goes offscreen. This might be intentional for you, but for this tutorial, it is not.

Go to the Sonic_AvoidDeath: label, and add however way you want Sonic to repel back up in the air. If you are still confused, keep reading.
Under the label, add this

Code:

       move.w    #-$700,$12(a0)
       move.b    #$10,$1C(a0)

Good job! you found out how to avoid sonic dying when exiting debug mode! For those users who want a sound effect, add this under the code mentioned above:

Code:

        move.w    #$CC,d0
        jsr    (PlaySound_Special).l ;    play spring sound

 

This Helped Me So Much!!!! Thank You!

 

also. the sound whne you die or lose rings in still there. is there a fix?

 

How does this occur? I can help, but you will have to specify what you do, and what happens that triggers it.