How do I fix MZ's(and now SYZ's as well) Background in Sonic 2?

I got this bug when porting Marble's Background Scrolling in the newest github disasm ( the lava is fine since I havent Ported it yet)

Spoiler: Bug

Heres the Code in case anyone is asking

Code:

Bg_Scroll_X:
        lea    ($FFFFE000).w,a1
        move.w    #$E,d1
        move.w    (Camera_X_pos).w,d0
        neg.w    d0
        swap    d0
        andi.w    #$F,d2
        add.w    d2,d2
        move.w    (a2)+,d0
        jmp    .pixelJump(pc,d2.w)        ; skip pixels for first row
    .blockLoop:
        move.w    (a2)+,d0
    .pixelJump:   
        move.l    d0,(a1)+
        move.l    d0,(a1)+
        move.l    d0,(a1)+
        move.l    d0,(a1)+
        move.l    d0,(a1)+
        move.l    d0,(a1)+
        move.l    d0,(a1)+
        move.l    d0,(a1)+
        move.l    d0,(a1)+
        move.l    d0,(a1)+
        move.l    d0,(a1)+
        move.l    d0,(a1)+
        move.l    d0,(a1)+
        move.l    d0,(a1)+
        move.l    d0,(a1)+
        move.l    d0,(a1)+
        dbf    d1,.blockLoop
        rts

SwScrl_ARZ:
    ; block 1 - dungeon interior
        move.w    ($FFFFEEB0).w,d4
        ext.l    d4
        asl.l    #6,d4
        move.l    d4,d1
        asl.l    #1,d4
        add.l    d1,d4
        moveq    #2,d6
        bsr.w    SetHorizScrollFlagsBG
    ; block 3 - mountains
        move.w    ($FFFFEEB0).w,d4
        ext.l    d4
        asl.l    #6,d4
        moveq    #6,d6
        bsr.w    ScrollBlock6
    ; block 2 - bushes & antique buildings
        move.w    ($FFFFEEB0).w,d4
        ext.l    d4
        asl.l    #7,d4
        moveq    #4,d6
        bsr.w    SetHorizScrollFlagsBG2
    ; calculate y-position of background
        move.w    #$200,d0    ; start with 512px, ignoring 2 chunks
        move.w    (Camera_Y_pos).w,d1
        subi.w    #$1C8,d1    ; 0% scrolling when y <= 56px
        bcs.s    .noYscroll
        move.w    d1,d2
        add.w    d1,d1
        add.w    d2,d1
        asr.w    #2,d1
        add.w    d1,d0
    .noYscroll:
        move.w    d0,(Camera_BG2_Y_pos).w
        move.w    d0,($FFFFEE1C).w
        bsr.w    ScrollBlock3
        move.w    (Camera_BG_Y_pos).w,(Vscroll_Factor_BG).w
    ; do something with redraw flags
        move.b    (Scroll_flags_BG).w,d0
        or.b    (Scroll_flags_BG2).w,d0
        or.b    d0,(Scroll_flags_BG3).w
        clr.b    (Scroll_flags_BG).w
        clr.b    (Scroll_flags_BG2).w
    ; calculate background scroll buffer
        lea    ($FFFFA800).w,a1
        move.w    (Camera_X_pos).w,d2
        neg.w    d2
        move.w    d2,d0
        asr.w    #2,d0
        sub.w    d2,d0
        ext.l    d0
        asl.l    #3,d0
        divs.w    #5,d0
        ext.l    d0
        asl.l    #4,d0
        asl.l    #8,d0
        moveq    #0,d3
        move.w    d2,d3
        asr.w    #1,d3
        move.w    #4,d1
    .cloudLoop:   
        move.w    d3,(a1)+
        swap    d3
        add.l    d0,d3
        swap    d3
        dbf    d1,.cloudLoop

        move.w    (Camera_BG3_X_pos).w,d0
        neg.w    d0
        move.w    #1,d1
    .mountainLoop:   
        move.w    d0,(a1)+
        dbf    d1,.mountainLoop

        move.w    (Camera_BG2_X_pos).w,d0
        neg.w    d0
        move.w    #8,d1
    .bushLoop:   
        move.w    d0,(a1)+
        dbf    d1,.bushLoop

        move.w    (Camera_BG_X_pos).w,d0
        neg.w    d0
        move.w    #$F,d1
    .interiorLoop:   
        move.w    d0,(a1)+
        dbf    d1,.interiorLoop

        lea    ($FFFFA800).w,a2
        move.w    (Camera_BG_Y_pos).w,d0
        subi.w    #$200,d0    ; subtract 512px (unused 2 chunks)
        move.w    d0,d2
        cmpi.w    #$100,d0
        blo.s    .limitY
        move.w    #$100,d0
    .limitY:
        andi.w    #$1F0,d0
        lsr.w    #3,d0
        lea    (a2,d0.w),a2
        bra.w    Bg_Scroll_X
; End of function Deform_MZ

 

Marble Zone has custom code in the 'Draw_BG3' function. Sonic 2 removed it, but it can be found in Sonic 1's equivalent, 'DrawBGScrollBlock3'.

 

Thanks! I’m using OOZs Bg code as a placeholder now because I don’t want to port the code yet.

 

So I fixed that bug, but now I have a new bug:

Spoiler: Bug

and this as well (dont look at the glitched tiles, look at the background position):

Spoiler: Bug 2

How do I fix these?

 

nvm, found out it was slightly different code in s2 and s1.