Sonic 1 after act one credits

i wanna make a one level hack so after act one green hill zone come the credits and i dont know how can you guys help me?

 

Replace this from Obj3A_NextLevel

Code:

        move.b    ($FFFFFE10).w,d0
        andi.w    #7,d0
        lsl.w    #3,d0
        move.b    ($FFFFFE11).w,d1
        andi.w    #3,d1
        add.w    d1,d1
        add.w    d1,d0
        move.w    LevelOrder(pc,d0.w),d0 ; load level from level order array
        move.w    d0,($FFFFFE10).w ; set level number
        tst.w    d0
        bne.s    Obj3A_ChkSS
        move.b   #0,($FFFFF600).w ; set game mode to level (00)

with this

Code:

        move.b    #$1C,($FFFFF600).w ; set game mode to credits (1C)

 

EDIT: Ninja'd.

In terms of Sonic 1, "credits" come after the ending sequence. The level order can be adjusted so that Green Hill Act 1 goes to Ending Sequence (Act 1) instead of Green Hill act 2, or however you adjust it.

Hex editing the Level Order's binary file in a dissembly can prove to be a little much if you're not too sure what you're looking at, but here's Painto's code (and quick tut') to make the level order be in ASM.

http://sonicresearch.org/community/index.php?threads/sonic-1-changing-level-order.3791/#post-55402

After applying it, change this line:

Code:

        dc.w    green_hill_act_2    ; GHZ1

..to the level you want to activate instead of Green Hill's Act 2.

For the ending sequence, that would be an address he didn't mention, but would it hurt to use Final Zone?

Code:

        dc.w    final_zone    ; GHZ1 goes to Final

I personally use the method of editing the level order in a clean ROM with ESEII, splitting it, and then using the lvl_ord.bin from that.